Cable Sizing Calc
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Transcript of Cable Sizing Calc
![Page 1: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/1.jpg)
Prepared by: JR Ejorcadas BLOCK No. 1
North Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage =240 V kVAresidential = 41.22 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
41.222 + (0.16 x 10) = 42.82 kVA No. of Bundles: 1kVANORTH= kVA SpanNORTH = 128.69 kVA
Total Current Computation:INORTH = (kVANORTH) ÷ (System Voltage)
= (42.822 x1000)/240= 178.425 A
Total Distance Computation:
dNORTH = (kVA-SpanNORTH ÷ kVANORTH) x (Pole Distance)= (128.686 ÷ 42.822)x150= 450.771 ft
Circular Mill Computation:CM = (24 x INORTH x dNORTH ) / (VDC x B)
= (24 x 178.425 x 450.771) / (12 x 1)= 160858 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 000 AWG Copper Conductor, 2-Wires7 Strands Hard Drawn Copper Conductor
167806 CMILS
(For 3 ft. Spacing Between Two 167806 CM Wires:)Based on Table
Ra = 0.382 Ω/mileXa = 0.518 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.133 Ω/mile
Xt = Xa + Xd = 0.651 Ω/mile
Reactance and Resistance Ratio (X t/Ra):Ratio= Xt ÷ Ra
= 0.651307678568674 ÷ 0.382= 1.705
Based on Table : AC DROP FACTOR @ 85% = 1.85
167806
![Page 2: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/2.jpg)
AC Voltage Drop Calculation:
Vdc Actual = (24 x INORTH x dNORTH) ÷ (CM x B)= (24 x 178.425 x 450.771) ÷ (167806 x 1)= 11.503 V
Vac Drop = Vdc Actual x AC Drop Factor= 11.503 x 1.85= 21.281 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (21.281 ÷ 240) x 100 = 8.867 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 3: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/3.jpg)
South Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 56.80 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVASOUTH = 56.796 + (0.16 x 10) = 58.40 kVA No. of Bundles: 1kVA SpanSOUTH = 129.25 kVA
Total Current Computation:ISOUTH = (kVASOUTH) ÷ (System Voltage)
= (58.396 x1000)/240 = 243.317 A
Total Distance Computation:
dSOUTH = (kVA-SpanSOUTH ÷ kVASOUTH) x (Pole Distance)= (129.252 ÷ 58.396)x150 = 332.006 ft
Circular Mill Computation:CM = (24 x ISOUTH x dSOUTH ) / (VDC x B)
= (24 x 243.317 x 332.006) / (12 x 1)= 161565 CM ≈ 167806 CM
Based on Table For Circular Mill:
Use: No. 000 AWG Copper Conductor, 2-Wires167806 7 Strands Hard Drawn Copper Conductor
167806 CMILS
(For 3 ft. Spacing Between Two 167806 CM Wires:)Based on Table
Ra = 0.382 Ω/mileXa = 0.518 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.1333 Ω/mile
Xt = Xa + Xd = 0.6513 Ω/mile
Reactance and Resistance Ratio (X t/Ra):Ratio= Xt ÷ Ra
= 0.651307678568674 ÷ 0.382= 1.705
Based on Table : AC DROP FACTOR @ 85% = 1.85
![Page 4: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/4.jpg)
AC Voltage Drop Calculation:
Vdc Actual = (24 x ISOUTH x dSOUTH) ÷ (CM x B)= (24 x 243.317 x 332.006) ÷ (167806 x 1)= 11.554 V
Vac Drop = Vdc Actual x AC Drop Factor= 11.554 x 1.85= 21.375 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (21.375 ÷ 240) x 100= 8.906 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 5: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/5.jpg)
Prepared by: JR Ejorcadas BLOCK No. 2
North Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 52.60 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVANORTH = 52.6 + (0.16 x 10) = 54.20 kVA No. of Bundles: 1kVA SpanNORTH = 189.18 kVA
Total Current Computation:INORTH = (kVANORTH) ÷ (System Voltage)
= (54.2 x1000)/240= 225.833 A
Total Distance Computation:
dNORTH = (kVA-SpanNORTH ÷ kVANORTH) x (Pole Distance)= (189.178 ÷ 54.2)x150= 523.555 ft
Circular Mill Computation:CM = (24 x INORTH x dNORTH ) / (VDC x B)
= (24 x 225.833 x 523.555) / (12 x 1)= 236472 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 400 MCM Copper Conductor, 2-Wires400000 19 Strands Hard Drawn Copper Conductor
250000 CMILS
(For 3 ft. Spacing Between Two 250000 CM Wires:)Based on Table
Ra = 0.162 Ω/mileXa = 0.458 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.133 Ω/mile
Xt = Xa + Xd = 0.591 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
250000
![Page 6: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/6.jpg)
Ratio= Xt ÷ Ra
= 0.591307678568674 ÷ 0.162= 3.65
Based on Table : AC DROP FACTOR @ 85% = 3.1
AC Voltage Drop Calculation:
Vdc Actual = (24 x INORTH x dNORTH) ÷ (CM x B)= (24 x 225.833 x 523.555) ÷ (250000 x 1)= 11.351 V
Vac Drop = Vdc Actual x AC Drop Factor= 11.351 x 3.1= 35.188 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (35.188 ÷ 240) x 100= 14.662 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 7: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/7.jpg)
South Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 65.41 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVASOUTH = 65.408 + (0.16 x 10) = 67.01 kVA No. of Bundles: 1kVA SpanSOUTH = 188.81 kVA
Total Current Computation:ISOUTH = (kVASOUTH) ÷ (System Voltage)
= (67.008 x1000)/240= 279.200 A
Total Distance Computation:
dSOUTH = (kVA-SpanSOUTH ÷ kVASOUTH) x (Pole Distance)= (188.81 ÷ 67.008)x150= 422.658 ft
Circular Mill Computation:CM = (24 x ISOUTH x dSOUTH ) / (VDC x B)
= (24 x 279.200 x 422.658) / (12 x 1)= 236012 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 400 MCM Copper Conductor, 2-Wires400000 19 Strands Hard Drawn Copper Conductor
250000 CMILS
(For 3 ft. Spacing Between Two 250000 CM Wires:)Based on Table
Ra = 0.162 Ω/mileXa = 0.458 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.1333 Ω/mile
Xt = Xa + Xd = 0.5913 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
250000
![Page 8: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/8.jpg)
Ratio= Xt ÷ Ra
= 0.591307678568674 ÷ 0.162= 3.65
Based on Table : AC DROP FACTOR @ 85% = 3.1
AC Voltage Drop Calculation:
Vdc Actual = (24 x ISOUTH x dSOUTH) ÷ (CM x B)= (24 x 279.200 x 422.658) ÷ (250000 x 1)= 11.329 V
Vac Drop = Vdc Actual x AC Drop Factor= 11.329 x 3.1= 35.120 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (35.120 ÷ 240) x 100= 14.633 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 9: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/9.jpg)
Prepared by: JR Ejorcadas BLOCK No. 3
North Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 78.00 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVANORTH = 77.996 + (0.16 x 10) = 79.60 kVA No. of Bundles: 1kVA SpanNORTH = 287.64 kVA
Total Current Computation:INORTH = (kVANORTH) ÷ (System Voltage)
= (79.596 x1000)/240= 331.650 A
Total Distance Computation:
dNORTH = (kVA-SpanNORTH ÷ kVANORTH) x (Pole Distance)= (287.642 ÷ 79.596)x150= 542.066 ft
Circular Mill Computation:CM = (24 x INORTH x dNORTH ) / (VDC x B)
= (24 x 331.650 x 542.066) / (12 x 1)= 359552 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 400 MCM Copper Conductor, 2-Wires400000 19 Strands Hard Drawn Copper Conductor
400000 CMILS
(For 3 ft. Spacing Between Two 400000 CM Wires:)Based on Table
Ra = 0.162 Ω/mileXa = 0.458 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.133 Ω/mile
Xt = Xa + Xd = 0.591 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
400000
![Page 10: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/10.jpg)
Ratio= Xt ÷ Ra
= 0.591307678568674 ÷ 0.162= 3.65
Based on Table : AC DROP FACTOR @ 85% = 3.1
AC Voltage Drop Calculation:
Vdc Actual = (24 x INORTH x dNORTH) ÷ (CM x B)= (24 x 331.650 x 542.066) ÷ (400000 x 1)= 10.787 V
Vac Drop = Vdc Actual x AC Drop Factor= 10.787 x 3.1= 33.440 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (33.440 ÷ 240) x 100= 13.933 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 11: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/11.jpg)
South Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 63.90 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVASOUTH = 63.9 + (0.16 x 10) = 65.50 kVA No. of Bundles: 1kVA SpanSOUTH = 288.16 kVA
Total Current Computation:ISOUTH = (kVASOUTH) ÷ (System Voltage)
= (65.5 x1000)/240= 272.917 A
Total Distance Computation:
dSOUTH = (kVA-SpanSOUTH ÷ kVASOUTH) x (Pole Distance)= (288.164 ÷ 65.5)x150= 659.918 ft
Circular Mill Computation:CM = (24 x ISOUTH x dSOUTH ) / (VDC x B)
= (24 x 272.917 x 659.918) / (12 x 1)= 360206 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 400 MCM Copper Conductor, 2-Wires400000 19 Strands Hard Drawn Copper Conductor
400000 CMILS
(For 3 ft. Spacing Between Two 400000 CM Wires:)Based on Table
Ra = 0.162 Ω/mileXa = 0.458 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.1333 Ω/mile
Xt = Xa + Xd = 0.5913 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
400000
![Page 12: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/12.jpg)
Ratio= Xt ÷ Ra
= 0.591307678568674 ÷ 0.162= 3.65
Based on Table : AC DROP FACTOR @ 85% = 3.1
AC Voltage Drop Calculation:
Vdc Actual = (24 x ISOUTH x dSOUTH) ÷ (CM x B)= (24 x 272.917 x 659.918) ÷ (400000 x 1)= 10.806 V
Vac Drop = Vdc Actual x AC Drop Factor= 10.806 x 3.1= 33.499 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (33.499 ÷ 240) x 100= 13.958 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 13: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/13.jpg)
Prepared by: JR Ejorcadas BLOCK No. 4
North Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 57.75 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVANORTH = 57.746 + (0.16 x 10) = 59.35 kVA No. of Bundles: 1kVA SpanNORTH = 256.93 kVA
Total Current Computation:INORTH = (kVANORTH) ÷ (System Voltage)
= (59.346 x1000)/240= 247.275 A
Total Distance Computation:
dNORTH = (kVA-SpanNORTH ÷ kVANORTH) x (Pole Distance)= (256.926 ÷ 59.346)x150= 649.393 ft
Circular Mill Computation:CM = (24 x INORTH x dNORTH ) / (VDC x B)
= (24 x 247.275 x 649.393) / (12 x 1)= 321157 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 400 MCM Copper Conductor, 2-Wires400000 19 Strands Hard Drawn Copper Conductor
400000 CMILS
(For 3 ft. Spacing Between Two 400000 CM Wires:)Based on Table
Ra = 0.162 Ω/mileXa = 0.458 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.133 Ω/mile
Xt = Xa + Xd = 0.591 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
400000
![Page 14: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/14.jpg)
Ratio= Xt ÷ Ra
= 0.591307678568674 ÷ 0.162= 3.65
Based on Table : AC DROP FACTOR @ 85% = 3.1
AC Voltage Drop Calculation:
Vdc Actual = (24 x INORTH x dNORTH) ÷ (CM x B)= (24 x 247.275 x 649.393) ÷ (400000 x 1)= 9.635 V
Vac Drop = Vdc Actual x AC Drop Factor= 9.635 x 3.1= 29.869 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (29.869 ÷ 240) x 100= 12.445 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 15: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/15.jpg)
South Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 59.15 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVASOUTH = 59.152 + (0.16 x 10) = 60.75 kVA No. of Bundles: 1kVA SpanSOUTH = 256.89 kVA
Total Current Computation:ISOUTH = (kVASOUTH) ÷ (System Voltage)
= (60.752 x1000)/240= 253.133 A
Total Distance Computation:
dSOUTH = (kVA-SpanSOUTH ÷ kVASOUTH) x (Pole Distance)= (256.892 ÷ 60.752)x150= 634.280 ft
Circular Mill Computation:CM = (24 x ISOUTH x dSOUTH ) / (VDC x B)
= (24 x 253.133 x 634.280) / (12 x 1)= 321114 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 400 MCM Copper Conductor, 2-Wires400000 19 Strands Hard Drawn Copper Conductor
400000 CMILS
(For 3 ft. Spacing Between Two 400000 CM Wires:)Based on Table
Ra = 0.162 Ω/mileXa = 0.458 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.1333 Ω/mile
Xt = Xa + Xd = 0.5913 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
400000
![Page 16: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/16.jpg)
Ratio= Xt ÷ Ra
= 0.591307678568674 ÷ 0.162= 3.65
Based on Table : AC DROP FACTOR @ 85% = 3.1
AC Voltage Drop Calculation:
Vdc Actual = (24 x ISOUTH x dSOUTH) ÷ (CM x B)= (24 x 253.133 x 634.280) ÷ (400000 x 1)= 9.633 V
Vac Drop = Vdc Actual x AC Drop Factor= 9.633 x 3.1= 29.862 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (29.862 ÷ 240) x 100= 12.443 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 17: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/17.jpg)
Prepared by: JR Ejorcadas BLOCK No. 5
North Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 79.16 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVANORTH = 79.164 + (0.16 x 10) = 80.76 kVA No. of Bundles: 1kVA SpanNORTH = 280.44 kVA
Total Current Computation:INORTH = (kVANORTH) ÷ (System Voltage)
= (80.764 x1000)/240= 336.517 A
Total Distance Computation:
dNORTH = (kVA-SpanNORTH ÷ kVANORTH) x (Pole Distance)= (280.438 ÷ 80.764)x150= 520.847 ft
Circular Mill Computation:CM = (24 x INORTH x dNORTH ) / (VDC x B)
= (24 x 336.517 x 520.847) / (12 x 1)= 350548 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 400 MCM Copper Conductor, 2-Wires400000 19 Strands Hard Drawn Copper Conductor
400000 CMILS
(For 3 ft. Spacing Between Two 400000 CM Wires:)Based on Table
Ra = 0.162 Ω/mileXa = 0.458 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.133 Ω/mile
Xt = Xa + Xd = 0.591 Ω/mile
Reactance and Resistance Ratio (Xt/Ra):Ratio= Xt ÷ Ra
= 0.591307678568674 ÷ 0.162= 3.65
Based on Table : AC DROP FACTOR @ 85% = 3.1
AC Voltage Drop Calculation:
Vdc Actual = (24 x INORTH x dNORTH) ÷ (CM x B)= (24 x 336.517 x 520.847) ÷ (400000 x 1)= 10.516 V
Vac Drop = Vdc Actual x AC Drop Factor= 10.516 x 3.1= 32.600 V
400000
![Page 18: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/18.jpg)
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (32.600 ÷ 240) x 100= 13.583 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 19: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/19.jpg)
South Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 64.98 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVASOUTH = 64.978 + (0.16 x 10) = 66.58 kVA No. of Bundles: 1kVA SpanSOUTH = 279.69 kVA
Total Current Computation:ISOUTH = (kVASOUTH) ÷ (System Voltage)
= (66.578 x1000)/240= 277.408 A
Total Distance Computation:
dSOUTH = (kVA-SpanSOUTH ÷ kVASOUTH) x (Pole Distance)= (279.694 ÷ 66.578)x150= 630.150 ft
Circular Mill Computation:CM = (24 x ISOUTH x dSOUTH ) / (VDC x B)
= (24 x 277.408 x 630.150) / (12 x 1)= 349617 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 400 MCM Copper Conductor, 2-Wires400000 19 Strands Hard Drawn Copper Conductor
400000 CMILS
(For 3 ft. Spacing Between Two 400000 CM Wires:)Based on Table
Ra = 0.162 Ω/mileXa = 0.458 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.1333 Ω/mile
Xt = Xa + Xd = 0.5913 Ω/mile
Reactance and Resistance Ratio (Xt/Ra):Ratio= Xt ÷ Ra
= 0.591307678568674 ÷ 0.162= 3.65
Based on Table : AC DROP FACTOR @ 85% = 3.1
AC Voltage Drop Calculation:
Vdc Actual = (24 x ISOUTH x dSOUTH) ÷ (CM x B)= (24 x 277.408 x 630.150) ÷ (400000 x 1)= 10.489 V
Vac Drop = Vdc Actual x AC Drop Factor= 10.489 x 3.1= 32.516 V
400000
![Page 20: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/20.jpg)
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (32.516 ÷ 240) x 100= 13.548 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 21: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/21.jpg)
Prepared by: JR Ejorcadas BLOCK No. 6
North Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 53.96 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVANORTH = 53.958 + (0.16 x 10) = 55.56 kVA No. of Bundles: 1kVA SpanNORTH = 254.52 kVA
Total Current Computation:INORTH = (kVANORTH) ÷ (System Voltage)
= (55.558 x1000)/240= 231.492 A
Total Distance Computation:
dNORTH = (kVA-SpanNORTH ÷ kVANORTH) x (Pole Distance)= (254.518 ÷ 55.558)x150= 687.168 ft
Circular Mill Computation:CM = (24 x INORTH x dNORTH ) / (VDC x B)
= (24 x 231.492 x 687.168) / (12 x 1)= 318148 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 300 MCM Copper Conductor, 2-Wires300000 19 Strands Hard Drawn Copper Conductor
400000 CMILS
(For 3 ft. Spacing Between Two 400000 CM Wires:)Based on Table
Ra = 0.215 Ω/mileXa = 0.476 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.133 Ω/mile
Xt = Xa + Xd = 0.609 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
400000
![Page 22: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/22.jpg)
Ratio= Xt ÷ Ra
= 0.609307678568674 ÷ 0.215= 2.834
Based on Table : AC DROP FACTOR @ 85% = 2.6
AC Voltage Drop Calculation:
Vdc Actual = (24 x INORTH x dNORTH) ÷ (CM x B)= (24 x 231.492 x 687.168) ÷ (400000 x 1)= 9.544 V
Vac Drop = Vdc Actual x AC Drop Factor= 9.544 x 2.6= 24.814 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (24.814 ÷ 240) x 100= 10.339 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 23: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/23.jpg)
South Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 64.04 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVASOUTH = 64.044 + (0.16 x 10) = 65.64 kVA No. of Bundles: 1kVA SpanSOUTH = 255.19 kVA
Total Current Computation:ISOUTH = (kVASOUTH) ÷ (System Voltage)
= (65.644 x1000)/240= 273.517 A
Total Distance Computation:
dSOUTH = (kVA-SpanSOUTH ÷ kVASOUTH) x (Pole Distance)= (255.192 ÷ 65.644)x150= 583.127 ft
Circular Mill Computation:CM = (24 x ISOUTH x dSOUTH ) / (VDC x B)
= (24 x 273.517 x 583.127) / (12 x 1)= 318990 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 300 MCM Copper Conductor, 2-Wires300000 19 Strands Hard Drawn Copper Conductor
400000 CMILS
(For 3 ft. Spacing Between Two 400000 CM Wires:)Based on Table
Ra = 0.215 Ω/mileXa = 0.476 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.1333 Ω/mile
Xt = Xa + Xd = 0.6093 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
400000
![Page 24: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/24.jpg)
Ratio= Xt ÷ Ra
= 0.609307678568674 ÷ 0.215= 2.834
Based on Table : AC DROP FACTOR @ 85% = 2.6
AC Voltage Drop Calculation:
Vdc Actual = (24 x ISOUTH x dSOUTH) ÷ (CM x B)= (24 x 273.517 x 583.127) ÷ (400000 x 1)= 9.570 V
Vac Drop = Vdc Actual x AC Drop Factor= 9.570 x 2.6= 24.882 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (24.882 ÷ 240) x 100= 10.368 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 25: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/25.jpg)
Prepared by: JR Ejorcadas BLOCK No. 7
North Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 50.67 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVANORTH = 50.672 + (0.16 x 10) = 52.27 kVA No. of Bundles: 1kVA SpanNORTH = 192.12 kVA
Total Current Computation:INORTH = (kVANORTH) ÷ (System Voltage)
= (52.272 x1000)/240= 217.800 A
Total Distance Computation:
dNORTH = (kVA-SpanNORTH ÷ kVANORTH) x (Pole Distance)= (192.12 ÷ 52.272)x150= 551.309 ft
Circular Mill Computation:CM = (24 x INORTH x dNORTH ) / (VDC x B)
= (24 x 217.800 x 551.309) / (12 x 1)= 240150 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 250 MCM Copper Conductor, 2-Wires250000 19 Strands Hard Drawn Copper Conductor
250000 CMILS
(For 3 ft. Spacing Between Two 250000 CM Wires:)Based on Table
Ra = 0.257 Ω/mileXa = 0.487 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.133 Ω/mile
Xt = Xa + Xd = 0.62 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
250000
![Page 26: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/26.jpg)
Ratio= Xt ÷ Ra
= 0.620307678568674 ÷ 0.257= 2.4136
Based on Table : AC DROP FACTOR @ 85% = 2.28
AC Voltage Drop Calculation:
Vdc Actual = (24 x INORTH x dNORTH) ÷ (CM x B)= (24 x 217.800 x 551.309) ÷ (250000 x 1)= 11.527 V
Vac Drop = Vdc Actual x AC Drop Factor= 11.527 x 2.28= 26.282 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (26.282 ÷ 240) x 100= 10.951 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 27: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/27.jpg)
South Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 46.42 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVASOUTH = 46.418 + (0.16 x 10) = 48.02 kVA No. of Bundles: 1kVA SpanSOUTH = 191.17 kVA
Total Current Computation:ISOUTH = (kVASOUTH) ÷ (System Voltage)
= (48.018 x1000)/240= 200.075 A
Total Distance Computation:
dSOUTH = (kVA-SpanSOUTH ÷ kVASOUTH) x (Pole Distance)= (191.174 ÷ 48.018)x150= 597.195 ft
Circular Mill Computation:CM = (24 x ISOUTH x dSOUTH ) / (VDC x B)
= (24 x 200.075 x 597.195) / (12 x 1)= 238968 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 250 MCM Copper Conductor, 2-Wires250000 19 Strands Hard Drawn Copper Conductor
250000 CMILS
(For 3 ft. Spacing Between Two 250000 CM Wires:)Based on Table
Ra = 0.257 Ω/mileXa = 0.487 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.1333 Ω/mile
Xt = Xa + Xd = 0.6203 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
250000
![Page 28: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/28.jpg)
Ratio= Xt ÷ Ra
= 0.620307678568674 ÷ 0.257= 2.4136
Based on Table : AC DROP FACTOR @ 85% = 2.28
AC Voltage Drop Calculation:
Vdc Actual = (24 x ISOUTH x dSOUTH) ÷ (CM x B)= (24 x 200.075 x 597.195) ÷ (250000 x 1)= 11.470 V
Vac Drop = Vdc Actual x AC Drop Factor= 11.470 x 2.28= 26.152 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (26.152 ÷ 240) x 100= 10.897 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 29: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/29.jpg)
Prepared by: JR Ejorcadas BLOCK No. 8
North Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 71.65 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVANORTH = 71.648 + (0.16 x 10) = 73.25 kVA No. of Bundles: 1kVA SpanNORTH = 262.86 kVA
Total Current Computation:INORTH = (kVANORTH) ÷ (System Voltage)
= (73.248 x1000)/240= 305.200 A
Total Distance Computation:
dNORTH = (kVA-SpanNORTH ÷ kVANORTH) x (Pole Distance)= (262.858 ÷ 73.248)x150= 538.290 ft
Circular Mill Computation:CM = (24 x INORTH x dNORTH ) / (VDC x B)
= (24 x 305.200 x 538.290) / (12 x 1)= 328572 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 400 MCM Copper Conductor, 2-Wires400000 19 Strands Hard Drawn Copper Conductor
400000 CMILS
(For 3 ft. Spacing Between Two 400000 CM Wires:)Based on Table
Ra = 0.162 Ω/mileXa = 0.458 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.133 Ω/mile
Xt = Xa + Xd = 0.591 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
400000
![Page 30: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/30.jpg)
Ratio= Xt ÷ Ra
= 0.591307678568674 ÷ 0.162= 3.65
Based on Table : AC DROP FACTOR @ 85% = 3.1
AC Voltage Drop Calculation:
Vdc Actual = (24 x INORTH x dNORTH) ÷ (CM x B)= (24 x 305.200 x 538.290) ÷ (400000 x 1)= 9.857 V
Vac Drop = Vdc Actual x AC Drop Factor= 9.857 x 3.1= 30.557 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (30.557 ÷ 240) x 100= 12.732 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 31: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/31.jpg)
South Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 75.02 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVASOUTH = 75.018 + (0.16 x 10) = 76.62 kVA No. of Bundles: 1kVA SpanSOUTH = 263.43 kVA
Total Current Computation:ISOUTH = (kVASOUTH) ÷ (System Voltage)
= (76.618 x1000)/240= 319.242 A
Total Distance Computation:
dSOUTH = (kVA-SpanSOUTH ÷ kVASOUTH) x (Pole Distance)= (263.426 ÷ 76.618)x150= 515.726 ft
Circular Mill Computation:CM = (24 x ISOUTH x dSOUTH ) / (VDC x B)
= (24 x 319.242 x 515.726) / (12 x 1)= 329283 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 400 MCM Copper Conductor, 2-Wires400000 19 Strands Hard Drawn Copper Conductor
400000 CMILS
(For 3 ft. Spacing Between Two 400000 CM Wires:)Based on Table
Ra = 0.162 Ω/mileXa = 0.458 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.1333 Ω/mile
Xt = Xa + Xd = 0.5913 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
400000
![Page 32: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/32.jpg)
Ratio= Xt ÷ Ra
= 0.591307678568674 ÷ 0.162= 3.65
Based on Table : AC DROP FACTOR @ 85% = 3.1
AC Voltage Drop Calculation:
Vdc Actual = (24 x ISOUTH x dSOUTH) ÷ (CM x B)= (24 x 319.242 x 515.726) ÷ (400000 x 1)= 9.878 V
Vac Drop = Vdc Actual x AC Drop Factor= 9.878 x 3.1= 30.622 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (30.622 ÷ 240) x 100= 12.759 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 33: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/33.jpg)
Prepared by: JR Ejorcadas BLOCK No. 9
North Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 78.07 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVANORTH = 78.068 + (0.16 x 10) = 79.67 kVA No. of Bundles: 1kVA SpanNORTH = 294.48 kVA
Total Current Computation:INORTH = (kVANORTH) ÷ (System Voltage)
= (79.668 x1000)/240= 331.950 A
Total Distance Computation:
dNORTH = (kVA-SpanNORTH ÷ kVANORTH) x (Pole Distance)= (294.484 ÷ 79.668)x150= 554.459 ft
Circular Mill Computation:CM = (24 x INORTH x dNORTH ) / (VDC x B)
= (24 x 331.950 x 554.459) / (12 x 1)= 368105 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 400 MCM Copper Conductor, 2-Wires400000 19 Strands Hard Drawn Copper Conductor
400000 CMILS
(For 3 ft. Spacing Between Two 400000 CM Wires:)Based on Table
Ra = 0.162 Ω/mileXa = 0.458 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.133 Ω/mile
Xt = Xa + Xd = 0.591 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
400000
![Page 34: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/34.jpg)
Ratio= Xt ÷ Ra
= 0.591307678568674 ÷ 0.162= 3.65
Based on Table : AC DROP FACTOR @ 85% = 3.1
AC Voltage Drop Calculation:
Vdc Actual = (24 x INORTH x dNORTH) ÷ (CM x B)= (24 x 331.950 x 554.459) ÷ (400000 x 1)= 11.043 V
Vac Drop = Vdc Actual x AC Drop Factor= 11.043 x 3.1= 34.233 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (34.233 ÷ 240) x 100= 14.264 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 35: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/35.jpg)
South Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 67.05 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVASOUTH = 67.048 + (0.16 x 10) = 68.65 kVA No. of Bundles: 1kVA SpanSOUTH = 294.48 kVA
Total Current Computation:ISOUTH = (kVASOUTH) ÷ (System Voltage)
= (68.648 x1000)/240= 286.033 A
Total Distance Computation:
dSOUTH = (kVA-SpanSOUTH ÷ kVASOUTH) x (Pole Distance)= (294.484 ÷ 68.648)x150= 643.465 ft
Circular Mill Computation:CM = (24 x ISOUTH x dSOUTH ) / (VDC x B)
= (24 x 286.033 x 643.465) / (12 x 1)= 368104 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 400 MCM Copper Conductor, 2-Wires400000 19 Strands Hard Drawn Copper Conductor
400000 CMILS
(For 3 ft. Spacing Between Two 400000 CM Wires:)Based on Table
Ra = 0.162 Ω/mileXa = 0.458 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.1333 Ω/mile
Xt = Xa + Xd = 0.5913 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
400000
![Page 36: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/36.jpg)
Ratio= Xt ÷ Ra
= 0.591307678568674 ÷ 0.162= 3.65
Based on Table : AC DROP FACTOR @ 85% = 3.1
AC Voltage Drop Calculation:
Vdc Actual = (24 x ISOUTH x dSOUTH) ÷ (CM x B)= (24 x 286.033 x 643.465) ÷ (400000 x 1)= 11.043 V
Vac Drop = Vdc Actual x AC Drop Factor= 11.043 x 3.1= 34.233 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (34.233 ÷ 240) x 100= 14.264 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 37: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/37.jpg)
Prepared by: JR Ejorcadas BLOCK No. 10
North Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 48.13 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVANORTH = 48.132 + (0.16 x 10) = 49.73 kVA No. of Bundles: 1kVA SpanNORTH = 179.28 kVA
Total Current Computation:INORTH = (kVANORTH) ÷ (System Voltage)
= (49.732 x1000)/240= 207.217 A
Total Distance Computation:
dNORTH = (kVA-SpanNORTH ÷ kVANORTH) x (Pole Distance)= (179.276 ÷ 49.732)x150= 540.726 ft
Circular Mill Computation:CM = (24 x INORTH x dNORTH ) / (VDC x B)
= (24 x 207.217 x 540.726) / (12 x 1)= 224095 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 250 MCM Copper Conductor, 2-Wires250000 19 Strands Hard Drawn Copper Conductor
250000 CMILS
(For 3 ft. Spacing Between Two 250000 CM Wires:)Based on Table
Ra = 0.257 Ω/mileXa = 0.487 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.133 Ω/mile
Xt = Xa + Xd = 0.62 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
250000
![Page 38: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/38.jpg)
Ratio= Xt ÷ Ra
= 0.620307678568674 ÷ 0.257= 2.4136
Based on Table : AC DROP FACTOR @ 85% = 2.28
AC Voltage Drop Calculation:
Vdc Actual = (24 x INORTH x dNORTH) ÷ (CM x B)= (24 x 207.217 x 540.726) ÷ (250000 x 1)= 10.757 V
Vac Drop = Vdc Actual x AC Drop Factor= 10.757 x 2.28= 24.526 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (24.526 ÷ 240) x 100= 10.219 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 39: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/39.jpg)
South Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 45.00 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVASOUTH = 44.996 + (0.16 x 10) = 46.60 kVA No. of Bundles: 1kVA SpanSOUTH = 179.28 kVA
Total Current Computation:ISOUTH = (kVASOUTH) ÷ (System Voltage)
= (46.596 x1000)/240= 194.150 A
Total Distance Computation:
dSOUTH = (kVA-SpanSOUTH ÷ kVASOUTH) x (Pole Distance)= (179.276 ÷ 46.596)x150= 577.118 ft
Circular Mill Computation:CM = (24 x ISOUTH x dSOUTH ) / (VDC x B)
= (24 x 194.150 x 577.118) / (12 x 1)= 224095 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 250 MCM Copper Conductor, 2-Wires250000 19 Strands Hard Drawn Copper Conductor
250000 CMILS
(For 3 ft. Spacing Between Two 250000 CM Wires:)Based on Table
Ra = 0.257 Ω/mileXa = 0.487 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.1333 Ω/mile
Xt = Xa + Xd = 0.6203 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
250000
![Page 40: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/40.jpg)
Ratio= Xt ÷ Ra
= 0.620307678568674 ÷ 0.257= 2.4136
Based on Table : AC DROP FACTOR @ 85% = 2.28
AC Voltage Drop Calculation:
Vdc Actual = (24 x ISOUTH x dSOUTH) ÷ (CM x B)= (24 x 194.150 x 577.118) ÷ (250000 x 1)= 10.757 V
Vac Drop = Vdc Actual x AC Drop Factor= 10.757 x 2.28= 24.526 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (24.526 ÷ 240) x 100= 10.219 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 41: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/41.jpg)
Prepared by: JR Ejorcadas BLOCK No. 11
North Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 44.68 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVANORTH = 44.676 + (0.16 x 10) = 46.28 kVA No. of Bundles: 1kVA SpanNORTH = 191.89 kVA
Total Current Computation:INORTH = (kVANORTH) ÷ (System Voltage)
= (46.276 x1000)/240= 192.817 A
Total Distance Computation:
dNORTH = (kVA-SpanNORTH ÷ kVANORTH) x (Pole Distance)= (191.888 ÷ 46.276)x150= 621.990 ft
Circular Mill Computation:CM = (24 x INORTH x dNORTH ) / (VDC x B)
= (24 x 192.817 x 621.990) / (12 x 1)= 239860 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 400 MCM Copper Conductor, 2-Wires400000 19 Strands Hard Drawn Copper Conductor
250000 CMILS
(For 3 ft. Spacing Between Two 250000 CM Wires:)Based on Table
Ra = 0.162 Ω/mileXa = 0.458 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.133 Ω/mile
Xt = Xa + Xd = 0.591 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
250000
![Page 42: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/42.jpg)
Ratio= Xt ÷ Ra
= 0.591307678568674 ÷ 0.162= 3.65
Based on Table : AC DROP FACTOR @ 85% = 3.1
AC Voltage Drop Calculation:
Vdc Actual = (24 x INORTH x dNORTH) ÷ (CM x B)= (24 x 192.817 x 621.990) ÷ (250000 x 1)= 11.513 V
Vac Drop = Vdc Actual x AC Drop Factor= 11.513 x 3.1= 35.690 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (35.690 ÷ 240) x 100= 14.871 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 43: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/43.jpg)
South Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 54.91 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVASOUTH = 54.912 + (0.16 x 10) = 56.51 kVA No. of Bundles: 1kVA SpanSOUTH = 191.93 kVA
Total Current Computation:ISOUTH = (kVASOUTH) ÷ (System Voltage)
= (56.512 x1000)/240= 235.467 A
Total Distance Computation:
dSOUTH = (kVA-SpanSOUTH ÷ kVASOUTH) x (Pole Distance)= (191.932 ÷ 56.512)x150= 509.446 ft
Circular Mill Computation:CM = (24 x ISOUTH x dSOUTH ) / (VDC x B)
= (24 x 235.467 x 509.446) / (12 x 1)= 239915 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 400 MCM Copper Conductor, 2-Wires400000 19 Strands Hard Drawn Copper Conductor
250000 CMILS
(For 3 ft. Spacing Between Two 250000 CM Wires:)Based on Table
Ra = 0.162 Ω/mileXa = 0.458 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.1333 Ω/mile
Xt = Xa + Xd = 0.5913 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
250000
![Page 44: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/44.jpg)
Ratio= Xt ÷ Ra
= 0.591307678568674 ÷ 0.162= 3.65
Based on Table : AC DROP FACTOR @ 85% = 3.1
AC Voltage Drop Calculation:
Vdc Actual = (24 x ISOUTH x dSOUTH) ÷ (CM x B)= (24 x 235.467 x 509.446) ÷ (250000 x 1)= 11.516 V
Vac Drop = Vdc Actual x AC Drop Factor= 11.516 x 3.1= 35.700 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (35.700 ÷ 240) x 100= 14.875 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 45: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/45.jpg)
Prepared by: JR Ejorcadas BLOCK No. 12
North Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 77.11 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVANORTH = 77.114 + (0.16 x 10) = 78.71 kVA No. of Bundles: 1kVA SpanNORTH = 294.14 kVA
Total Current Computation:INORTH = (kVANORTH) ÷ (System Voltage)
= (78.714 x1000)/240= 327.975 A
Total Distance Computation:
dNORTH = (kVA-SpanNORTH ÷ kVANORTH) x (Pole Distance)= (294.142 ÷ 78.714)x150= 560.527 ft
Circular Mill Computation:CM = (24 x INORTH x dNORTH ) / (VDC x B)
= (24 x 327.975 x 560.527) / (12 x 1)= 367678 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 400 MCM Copper Conductor, 2-Wires400000 19 Strands Hard Drawn Copper Conductor
400000 CMILS
(For 3 ft. Spacing Between Two 400000 CM Wires:)Based on Table
Ra = 0.162 Ω/mileXa = 0.458 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.133 Ω/mile
Xt = Xa + Xd = 0.591 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
400000
![Page 46: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/46.jpg)
Ratio= Xt ÷ Ra
= 0.591307678568674 ÷ 0.162= 3.65
Based on Table : AC DROP FACTOR @ 85% = 3.1
AC Voltage Drop Calculation:
Vdc Actual = (24 x INORTH x dNORTH) ÷ (CM x B)= (24 x 327.975 x 560.527) ÷ (400000 x 1)= 11.030 V
Vac Drop = Vdc Actual x AC Drop Factor= 11.030 x 3.1= 34.193 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (34.193 ÷ 240) x 100= 14.247 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 47: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/47.jpg)
South Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 70.82 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVASOUTH = 70.82 + (0.16 x 10) = 72.42 kVA No. of Bundles: 1kVA SpanSOUTH = 293.34 kVA
Total Current Computation:ISOUTH = (kVASOUTH) ÷ (System Voltage)
= (72.42 x1000)/240= 301.750 A
Total Distance Computation:
dSOUTH = (kVA-SpanSOUTH ÷ kVASOUTH) x (Pole Distance)= (293.336 ÷ 72.42)x150= 607.572 ft
Circular Mill Computation:CM = (24 x ISOUTH x dSOUTH ) / (VDC x B)
= (24 x 301.750 x 607.572) / (12 x 1)= 366670 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 400 MCM Copper Conductor, 2-Wires400000 19 Strands Hard Drawn Copper Conductor
400000 CMILS
(For 3 ft. Spacing Between Two 400000 CM Wires:)Based on Table
Ra = 0.162 Ω/mileXa = 0.458 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.1333 Ω/mile
Xt = Xa + Xd = 0.5913 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
400000
![Page 48: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/48.jpg)
Ratio= Xt ÷ Ra
= 0.591307678568674 ÷ 0.162= 3.65
Based on Table : AC DROP FACTOR @ 85% = 3.1
AC Voltage Drop Calculation:
Vdc Actual = (24 x ISOUTH x dSOUTH) ÷ (CM x B)= (24 x 301.750 x 607.572) ÷ (400000 x 1)= 11.000 V
Vac Drop = Vdc Actual x AC Drop Factor= 11.000 x 3.1= 34.100 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (34.100 ÷ 240) x 100= 14.208 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 49: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/49.jpg)
Prepared by: JR Ejorcadas BLOCK No. 13
North Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 65.47 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVANORTH = 65.468 + (0.16 x 10) = 67.07 kVA No. of Bundles: 1kVA SpanNORTH = 270.21 kVA
Total Current Computation:INORTH = (kVANORTH) ÷ (System Voltage)
= (67.068 x1000)/240= 279.450 A
Total Distance Computation:
dNORTH = (kVA-SpanNORTH ÷ kVANORTH) x (Pole Distance)= (270.208 ÷ 67.068)x150= 604.330 ft
Circular Mill Computation:CM = (24 x INORTH x dNORTH ) / (VDC x B)
= (24 x 279.450 x 604.330) / (12 x 1)= 337760 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 400 MCM Copper Conductor, 2-Wires400000 19 Strands Hard Drawn Copper Conductor
400000 CMILS
(For 3 ft. Spacing Between Two 400000 CM Wires:)Based on Table
Ra = 0.162 Ω/mileXa = 0.458 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.133 Ω/mile
Xt = Xa + Xd = 0.591 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
400000
![Page 50: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/50.jpg)
Ratio= Xt ÷ Ra
= 0.591307678568674 ÷ 0.162= 3.65
Based on Table : AC DROP FACTOR @ 85% = 3.1
AC Voltage Drop Calculation:
Vdc Actual = (24 x INORTH x dNORTH) ÷ (CM x B)= (24 x 279.450 x 604.330) ÷ (400000 x 1)= 10.133 V
Vac Drop = Vdc Actual x AC Drop Factor= 10.133 x 3.1= 31.412 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (31.412 ÷ 240) x 100= 13.088 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 51: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/51.jpg)
South Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 65.16 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVASOUTH = 65.16 + (0.16 x 10) = 66.76 kVA No. of Bundles: 1kVA SpanSOUTH = 270.71 kVA
Total Current Computation:ISOUTH = (kVASOUTH) ÷ (System Voltage)
= (66.76 x1000)/240= 278.167 A
Total Distance Computation:
dSOUTH = (kVA-SpanSOUTH ÷ kVASOUTH) x (Pole Distance)= (270.712 ÷ 66.76)x150= 608.250 ft
Circular Mill Computation:CM = (24 x ISOUTH x dSOUTH ) / (VDC x B)
= (24 x 278.167 x 608.250) / (12 x 1)= 338390 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 400 MCM Copper Conductor, 2-Wires400000 19 Strands Hard Drawn Copper Conductor
400000 CMILS
(For 3 ft. Spacing Between Two 400000 CM Wires:)Based on Table
Ra = 0.162 Ω/mileXa = 0.458 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.1333 Ω/mile
Xt = Xa + Xd = 0.5913 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
400000
![Page 52: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/52.jpg)
Ratio= Xt ÷ Ra
= 0.591307678568674 ÷ 0.162= 3.65
Based on Table : AC DROP FACTOR @ 85% = 3.1
AC Voltage Drop Calculation:
Vdc Actual = (24 x ISOUTH x dSOUTH) ÷ (CM x B)= (24 x 278.167 x 608.250) ÷ (400000 x 1)= 10.152 V
Vac Drop = Vdc Actual x AC Drop Factor= 10.152 x 3.1= 31.471 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (31.471 ÷ 240) x 100= 13.113 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 53: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/53.jpg)
Prepared by: JR Ejorcadas BLOCK No. 14
North Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 48.61 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVANORTH = 48.614 + (0.16 x 10) = 50.21 kVA No. of Bundles: 1kVA SpanNORTH = 163.92 kVA
Total Current Computation:INORTH = (kVANORTH) ÷ (System Voltage)
= (50.214 x1000)/240= 209.225 A
Total Distance Computation:
dNORTH = (kVA-SpanNORTH ÷ kVANORTH) x (Pole Distance)= (163.918 ÷ 50.214)x150= 489.658 ft
Circular Mill Computation:CM = (24 x INORTH x dNORTH ) / (VDC x B)
= (24 x 209.225 x 489.658) / (12 x 1)= 204897 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 0000 AWG Copper Conductor, 2-Wires211600 19 Strands Hard Drawn Copper Conductor
211600 CMILS
(For 3 ft. Spacing Between Two 211600 CM Wires:)Based on Table
Ra = 0.303 Ω/mileXa = 0.496 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.133 Ω/mile
Xt = Xa + Xd = 0.629 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
211600
![Page 54: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/54.jpg)
Ratio= Xt ÷ Ra
= 0.629307678568674 ÷ 0.303= 2.0769
Based on Table : AC DROP FACTOR @ 85% = 2.03
AC Voltage Drop Calculation:
Vdc Actual = (24 x INORTH x dNORTH) ÷ (CM x B)= (24 x 209.225 x 489.658) ÷ (211600 x 1)= 11.620 V
Vac Drop = Vdc Actual x AC Drop Factor= 11.620 x 2.03= 23.589 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (23.589 ÷ 240) x 100= 9.829 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 55: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/55.jpg)
South Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 50.68 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVASOUTH = 50.684 + (0.16 x 10) = 52.28 kVA No. of Bundles: 1kVA SpanSOUTH = 163.03 kVA
Total Current Computation:ISOUTH = (kVASOUTH) ÷ (System Voltage)
= (52.284 x1000)/240= 217.850 A
Total Distance Computation:
dSOUTH = (kVA-SpanSOUTH ÷ kVASOUTH) x (Pole Distance)= (163.028 ÷ 52.284)x150= 467.719 ft
Circular Mill Computation:CM = (24 x ISOUTH x dSOUTH ) / (VDC x B)
= (24 x 217.850 x 467.719) / (12 x 1)= 203785 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 0000 AWG Copper Conductor, 2-Wires211600 19 Strands Hard Drawn Copper Conductor
211600 CMILS
(For 3 ft. Spacing Between Two 211600 CM Wires:)Based on Table
Ra = 0.303 Ω/mileXa = 0.496 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.1333 Ω/mile
Xt = Xa + Xd = 0.6293 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
211600
![Page 56: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/56.jpg)
Ratio= Xt ÷ Ra
= 0.629307678568674 ÷ 0.303= 2.0769
Based on Table : AC DROP FACTOR @ 85% = 2.03
AC Voltage Drop Calculation:
Vdc Actual = (24 x ISOUTH x dSOUTH) ÷ (CM x B)= (24 x 217.850 x 467.719) ÷ (211600 x 1)= 11.557 V
Vac Drop = Vdc Actual x AC Drop Factor= 11.557 x 2.03= 23.461 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (23.461 ÷ 240) x 100= 9.775 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 57: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/57.jpg)
Prepared by: JR Ejorcadas BLOCK No. 15
North Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 68.15 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVANORTH = 68.152 + (0.16 x 10) = 69.75 kVA No. of Bundles: 1kVA SpanNORTH = 214.62 kVA
Total Current Computation:INORTH = (kVANORTH) ÷ (System Voltage)
= (69.752 x1000)/240= 290.633 A
Total Distance Computation:
dNORTH = (kVA-SpanNORTH ÷ kVANORTH) x (Pole Distance)= (214.624 ÷ 69.752)x150= 461.544 ft
Circular Mill Computation:CM = (24 x INORTH x dNORTH ) / (VDC x B)
= (24 x 290.633 x 461.544) / (12 x 1)= 268280 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 300 MCM Copper Conductor, 2-Wires300000 19 Strands Hard Drawn Copper Conductor
300000 CMILS
(For 3 ft. Spacing Between Two 300000 CM Wires:)Based on Table
Ra = 0.215 Ω/mileXa = 0.476 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.133 Ω/mile
Xt = Xa + Xd = 0.609 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
300000
![Page 58: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/58.jpg)
Ratio= Xt ÷ Ra
= 0.609307678568674 ÷ 0.215= 2.834
Based on Table : AC DROP FACTOR @ 85% = 2.6
AC Voltage Drop Calculation:
Vdc Actual = (24 x INORTH x dNORTH) ÷ (CM x B)= (24 x 290.633 x 461.544) ÷ (300000 x 1)= 10.731 V
Vac Drop = Vdc Actual x AC Drop Factor= 10.731 x 2.6= 27.901 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (27.901 ÷ 240) x 100= 11.625 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 59: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/59.jpg)
South Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 56.81 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVASOUTH = 56.812 + (0.16 x 10) = 58.41 kVA No. of Bundles: 1kVA SpanSOUTH = 214.28 kVA
Total Current Computation:ISOUTH = (kVASOUTH) ÷ (System Voltage)
= (58.412 x1000)/240= 243.383 A
Total Distance Computation:
dSOUTH = (kVA-SpanSOUTH ÷ kVASOUTH) x (Pole Distance)= (214.284 ÷ 58.412)x150= 550.274 ft
Circular Mill Computation:CM = (24 x ISOUTH x dSOUTH ) / (VDC x B)
= (24 x 243.383 x 550.274) / (12 x 1)= 267855 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 300 MCM Copper Conductor, 2-Wires300000 19 Strands Hard Drawn Copper Conductor
300000 CMILS
(For 3 ft. Spacing Between Two 300000 CM Wires:)Based on Table
Ra = 0.215 Ω/mileXa = 0.476 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.1333 Ω/mile
Xt = Xa + Xd = 0.6093 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
300000
![Page 60: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/60.jpg)
Ratio= Xt ÷ Ra
= 0.609307678568674 ÷ 0.215= 2.834
Based on Table : AC DROP FACTOR @ 85% = 2.6
AC Voltage Drop Calculation:
Vdc Actual = (24 x ISOUTH x dSOUTH) ÷ (CM x B)= (24 x 243.383 x 550.274) ÷ (300000 x 1)= 10.714 V
Vac Drop = Vdc Actual x AC Drop Factor= 10.714 x 2.6= 27.856 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (27.856 ÷ 240) x 100= 11.607 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 61: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/61.jpg)
Prepared by: JR Ejorcadas BLOCK No. 16
North Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 63.72 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVANORTH = 63.724 + (0.16 x 10) = 65.32 kVA No. of Bundles: 1kVA SpanNORTH = 209.51 kVA
Total Current Computation:INORTH = (kVANORTH) ÷ (System Voltage)
= (65.324 x1000)/240= 272.183 A
Total Distance Computation:
dNORTH = (kVA-SpanNORTH ÷ kVANORTH) x (Pole Distance)= (209.512 ÷ 65.324)x150= 481.091 ft
Circular Mill Computation:CM = (24 x INORTH x dNORTH ) / (VDC x B)
= (24 x 272.183 x 481.091) / (12 x 1)= 261890 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 300 MCM Copper Conductor, 2-Wires300000 19 Strands Hard Drawn Copper Conductor
300000 CMILS
(For 3 ft. Spacing Between Two 300000 CM Wires:)Based on Table
Ra = 0.215 Ω/mileXa = 0.476 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.133 Ω/mile
Xt = Xa + Xd = 0.609 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
300000
![Page 62: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/62.jpg)
Ratio= Xt ÷ Ra
= 0.609307678568674 ÷ 0.215= 2.834
Based on Table : AC DROP FACTOR @ 85% = 2.6
AC Voltage Drop Calculation:
Vdc Actual = (24 x INORTH x dNORTH) ÷ (CM x B)= (24 x 272.183 x 481.091) ÷ (300000 x 1)= 10.476 V
Vac Drop = Vdc Actual x AC Drop Factor= 10.476 x 2.6= 27.238 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (27.238 ÷ 240) x 100= 11.349 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 63: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/63.jpg)
South Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 55.70 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVASOUTH = 55.696 + (0.16 x 10) = 57.30 kVA No. of Bundles: 1kVA SpanSOUTH = 209.18 kVA
Total Current Computation:ISOUTH = (kVASOUTH) ÷ (System Voltage)
= (57.296 x1000)/240= 238.733 A
Total Distance Computation:
dSOUTH = (kVA-SpanSOUTH ÷ kVASOUTH) x (Pole Distance)= (209.18 ÷ 57.296)x150= 547.630 ft
Circular Mill Computation:CM = (24 x ISOUTH x dSOUTH ) / (VDC x B)
= (24 x 238.733 x 547.630) / (12 x 1)= 261475 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 300 MCM Copper Conductor, 2-Wires300000 19 Strands Hard Drawn Copper Conductor
300000 CMILS
(For 3 ft. Spacing Between Two 300000 CM Wires:)Based on Table
Ra = 0.215 Ω/mileXa = 0.476 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.1333 Ω/mile
Xt = Xa + Xd = 0.6093 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
300000
![Page 64: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/64.jpg)
Ratio= Xt ÷ Ra
= 0.609307678568674 ÷ 0.215= 2.834
Based on Table : AC DROP FACTOR @ 85% = 2.6
AC Voltage Drop Calculation:
Vdc Actual = (24 x ISOUTH x dSOUTH) ÷ (CM x B)= (24 x 238.733 x 547.630) ÷ (300000 x 1)= 10.459 V
Vac Drop = Vdc Actual x AC Drop Factor= 10.459 x 2.6= 27.193 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (27.193 ÷ 240) x 100= 11.330 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 65: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/65.jpg)
Prepared by: JR Ejorcadas BLOCK No. 17
North Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 48.78 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVANORTH = 48.784 + (0.16 x 10) = 50.38 kVA No. of Bundles: 1kVA SpanNORTH = 236.36 kVA
Total Current Computation:INORTH = (kVANORTH) ÷ (System Voltage)
= (50.384 x1000)/240= 209.933 A
Total Distance Computation:
dNORTH = (kVA-SpanNORTH ÷ kVANORTH) x (Pole Distance)= (236.356 ÷ 50.384)x150= 703.664 ft
Circular Mill Computation:CM = (24 x INORTH x dNORTH ) / (VDC x B)
= (24 x 209.933 x 703.664) / (12 x 1)= 295445 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 300 MCM Copper Conductor, 2-Wires300000 19 Strands Hard Drawn Copper Conductor
300000 CMILS
(For 3 ft. Spacing Between Two 300000 CM Wires:)Based on Table
Ra = 0.215 Ω/mileXa = 0.476 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.133 Ω/mile
Xt = Xa + Xd = 0.609 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
300000
![Page 66: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/66.jpg)
Ratio= Xt ÷ Ra
= 0.609307678568674 ÷ 0.215= 2.834
Based on Table : AC DROP FACTOR @ 85% = 2.6
AC Voltage Drop Calculation:
Vdc Actual = (24 x INORTH x dNORTH) ÷ (CM x B)= (24 x 209.933 x 703.664) ÷ (300000 x 1)= 11.818 V
Vac Drop = Vdc Actual x AC Drop Factor= 11.818 x 2.6= 30.727 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (30.727 ÷ 240) x 100= 12.803 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 67: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/67.jpg)
South Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 49.88 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVASOUTH = 49.876 + (0.16 x 10) = 51.48 kVA No. of Bundles: 1kVA SpanSOUTH = 235.70 kVA
Total Current Computation:ISOUTH = (kVASOUTH) ÷ (System Voltage)
= (51.476 x1000)/240= 214.483 A
Total Distance Computation:
dSOUTH = (kVA-SpanSOUTH ÷ kVASOUTH) x (Pole Distance)= (235.7 ÷ 51.476)x150= 686.825 ft
Circular Mill Computation:CM = (24 x ISOUTH x dSOUTH ) / (VDC x B)
= (24 x 214.483 x 686.825) / (12 x 1)= 294625 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 300 MCM Copper Conductor, 2-Wires300000 19 Strands Hard Drawn Copper Conductor
300000 CMILS
(For 3 ft. Spacing Between Two 300000 CM Wires:)Based on Table
Ra = 0.215 Ω/mileXa = 0.476 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.1333 Ω/mile
Xt = Xa + Xd = 0.6093 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
300000
![Page 68: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/68.jpg)
Ratio= Xt ÷ Ra
= 0.609307678568674 ÷ 0.215= 2.834
Based on Table : AC DROP FACTOR @ 85% = 2.6
AC Voltage Drop Calculation:
Vdc Actual = (24 x ISOUTH x dSOUTH) ÷ (CM x B)= (24 x 214.483 x 686.825) ÷ (300000 x 1)= 11.785 V
Vac Drop = Vdc Actual x AC Drop Factor= 11.785 x 2.6= 30.641 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (30.641 ÷ 240) x 100= 12.767 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 69: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/69.jpg)
Prepared by: JR Ejorcadas BLOCK No. 18
North Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 46.56 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVANORTH = 46.564 + (0.16 x 10) = 48.16 kVA No. of Bundles: 1kVA SpanNORTH = 195.52 kVA
Total Current Computation:INORTH = (kVANORTH) ÷ (System Voltage)
= (48.164 x1000)/240= 200.683 A
Total Distance Computation:
dNORTH = (kVA-SpanNORTH ÷ kVANORTH) x (Pole Distance)= (195.52 ÷ 48.164)x150= 608.920 ft
Circular Mill Computation:CM = (24 x INORTH x dNORTH ) / (VDC x B)
= (24 x 200.683 x 608.920) / (12 x 1)= 244400 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 250 MCM Copper Conductor, 2-Wires250000 19 Strands Hard Drawn Copper Conductor
250000 CMILS
(For 3 ft. Spacing Between Two 250000 CM Wires:)Based on Table
Ra = 0.257 Ω/mileXa = 0.487 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.133 Ω/mile
Xt = Xa + Xd = 0.62 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
250000
![Page 70: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/70.jpg)
Ratio= Xt ÷ Ra
= 0.620307678568674 ÷ 0.257= 2.4136
Based on Table : AC DROP FACTOR @ 85% = 2.28
AC Voltage Drop Calculation:
Vdc Actual = (24 x INORTH x dNORTH) ÷ (CM x B)= (24 x 200.683 x 608.920) ÷ (250000 x 1)= 11.731 V
Vac Drop = Vdc Actual x AC Drop Factor= 11.731 x 2.28= 26.747 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (26.747 ÷ 240) x 100= 11.145 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 71: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/71.jpg)
South Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 48.00 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVASOUTH = 48 + (0.16 x 10) = 49.60 kVA No. of Bundles: 1kVA SpanSOUTH = 195.91 kVA
Total Current Computation:ISOUTH = (kVASOUTH) ÷ (System Voltage)
= (49.6 x1000)/240= 206.667 A
Total Distance Computation:
dSOUTH = (kVA-SpanSOUTH ÷ kVASOUTH) x (Pole Distance)= (195.908 ÷ 49.6)x150= 592.464 ft
Circular Mill Computation:CM = (24 x ISOUTH x dSOUTH ) / (VDC x B)
= (24 x 206.667 x 592.464) / (12 x 1)= 244886 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 250 MCM Copper Conductor, 2-Wires250000 19 Strands Hard Drawn Copper Conductor
250000 CMILS
(For 3 ft. Spacing Between Two 250000 CM Wires:)Based on Table
Ra = 0.257 Ω/mileXa = 0.487 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.1333 Ω/mile
Xt = Xa + Xd = 0.6203 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
250000
![Page 72: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/72.jpg)
Ratio= Xt ÷ Ra
= 0.620307678568674 ÷ 0.257= 2.4136
Based on Table : AC DROP FACTOR @ 85% = 2.28
AC Voltage Drop Calculation:
Vdc Actual = (24 x ISOUTH x dSOUTH) ÷ (CM x B)= (24 x 206.667 x 592.464) ÷ (250000 x 1)= 11.755 V
Vac Drop = Vdc Actual x AC Drop Factor= 11.755 x 2.28= 26.801 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (26.801 ÷ 240) x 100= 11.167 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 73: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/73.jpg)
Prepared by: JR Ejorcadas BLOCK No. 19
North Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 59.63 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVANORTH = 59.634 + (0.16 x 10) = 61.23 kVA No. of Bundles: 1kVA SpanNORTH = 253.14 kVA
Total Current Computation:INORTH = (kVANORTH) ÷ (System Voltage)
= (61.234 x1000)/240= 255.142 A
Total Distance Computation:
dNORTH = (kVA-SpanNORTH ÷ kVANORTH) x (Pole Distance)= (253.144 ÷ 61.234)x150= 620.106 ft
Circular Mill Computation:CM = (24 x INORTH x dNORTH ) / (VDC x B)
= (24 x 255.142 x 620.106) / (12 x 1)= 316430 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 400 MCM Copper Conductor, 2-Wires400000 19 Strands Hard Drawn Copper Conductor
400000 CMILS
(For 3 ft. Spacing Between Two 400000 CM Wires:)Based on Table
Ra = 0.162 Ω/mileXa = 0.458 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.133 Ω/mile
Xt = Xa + Xd = 0.591 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
400000
![Page 74: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/74.jpg)
Ratio= Xt ÷ Ra
= 0.591307678568674 ÷ 0.162= 3.65
Based on Table : AC DROP FACTOR @ 85% = 3.1
AC Voltage Drop Calculation:
Vdc Actual = (24 x INORTH x dNORTH) ÷ (CM x B)= (24 x 255.142 x 620.106) ÷ (400000 x 1)= 9.493 V
Vac Drop = Vdc Actual x AC Drop Factor= 9.493 x 3.1= 29.428 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (29.428 ÷ 240) x 100= 12.262 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 75: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/75.jpg)
South Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 59.48 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVASOUTH = 59.484 + (0.16 x 10) = 61.08 kVA No. of Bundles: 1kVA SpanSOUTH = 253.20 kVA
Total Current Computation:ISOUTH = (kVASOUTH) ÷ (System Voltage)
= (61.084 x1000)/240= 254.517 A
Total Distance Computation:
dSOUTH = (kVA-SpanSOUTH ÷ kVASOUTH) x (Pole Distance)= (253.196 ÷ 61.084)x150= 621.757 ft
Circular Mill Computation:CM = (24 x ISOUTH x dSOUTH ) / (VDC x B)
= (24 x 254.517 x 621.757) / (12 x 1)= 316495 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 400 MCM Copper Conductor, 2-Wires400000 19 Strands Hard Drawn Copper Conductor
400000 CMILS
(For 3 ft. Spacing Between Two 400000 CM Wires:)Based on Table
Ra = 0.162 Ω/mileXa = 0.458 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.1333 Ω/mile
Xt = Xa + Xd = 0.5913 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
400000
![Page 76: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/76.jpg)
Ratio= Xt ÷ Ra
= 0.591307678568674 ÷ 0.162= 3.65
Based on Table : AC DROP FACTOR @ 85% = 3.1
AC Voltage Drop Calculation:
Vdc Actual = (24 x ISOUTH x dSOUTH) ÷ (CM x B)= (24 x 254.517 x 621.757) ÷ (400000 x 1)= 9.495 V
Vac Drop = Vdc Actual x AC Drop Factor= 9.495 x 3.1= 29.435 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (29.435 ÷ 240) x 100= 12.265 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 77: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/77.jpg)
Prepared by: JR Ejorcadas BLOCK No. 20
North Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 33.28 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVANORTH = 33.278 + (0.16 x 10) = 34.88 kVA No. of Bundles: 1kVA SpanNORTH = 100.80 kVA
Total Current Computation:INORTH = (kVANORTH) ÷ (System Voltage)
= (34.878 x1000)/240= 145.325 A
Total Distance Computation:
dNORTH = (kVA-SpanNORTH ÷ kVANORTH) x (Pole Distance)= (100.796 ÷ 34.878)x150= 433.494 ft
Circular Mill Computation:CM = (24 x INORTH x dNORTH ) / (VDC x B)
= (24 x 145.325 x 433.494) / (12 x 1)= 125995 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 00 AWG Copper Conductor, 2-Wires133077 7 Strands Hard Drawn Copper Conductor
133077 CMILS
(For 3 ft. Spacing Between Two 133077 CM Wires:)Based on Table
Ra = 0.48 Ω/mileXa = 0.532 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.133 Ω/mile
Xt = Xa + Xd = 0.665 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
133077
![Page 78: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/78.jpg)
Ratio= Xt ÷ Ra
= 0.665307678568674 ÷ 0.48= 1.3861
Based on Table : AC DROP FACTOR @ 85% = 1.61
AC Voltage Drop Calculation:
Vdc Actual = (24 x INORTH x dNORTH) ÷ (CM x B)= (24 x 145.325 x 433.494) ÷ (133077 x 1)= 11.361 V
Vac Drop = Vdc Actual x AC Drop Factor= 11.361 x 1.61= 18.291 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (18.291 ÷ 240) x 100= 7.621 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 79: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/79.jpg)
South Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 39.48 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVASOUTH = 39.482 + (0.16 x 10) = 41.08 kVA No. of Bundles: 1kVA SpanSOUTH = 100.63 kVA
Total Current Computation:ISOUTH = (kVASOUTH) ÷ (System Voltage)
= (41.082 x1000)/240= 171.175 A
Total Distance Computation:
dSOUTH = (kVA-SpanSOUTH ÷ kVASOUTH) x (Pole Distance)= (100.628 ÷ 41.082)x150= 367.416 ft
Circular Mill Computation:CM = (24 x ISOUTH x dSOUTH ) / (VDC x B)
= (24 x 171.175 x 367.416) / (12 x 1)= 125785 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 00 AWG Copper Conductor, 2-Wires133077 7 Strands Hard Drawn Copper Conductor
133077 CMILS
(For 3 ft. Spacing Between Two 133077 CM Wires:)Based on Table
Ra = 0.48 Ω/mileXa = 0.532 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.1333 Ω/mile
Xt = Xa + Xd = 0.6653 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
133077
![Page 80: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/80.jpg)
Ratio= Xt ÷ Ra
= 0.665307678568674 ÷ 0.48= 1.3861
Based on Table : AC DROP FACTOR @ 85% = 1.61
AC Voltage Drop Calculation:
Vdc Actual = (24 x ISOUTH x dSOUTH) ÷ (CM x B)= (24 x 171.175 x 367.416) ÷ (133077 x 1)= 11.342 V
Vac Drop = Vdc Actual x AC Drop Factor= 11.342 x 1.61= 18.261 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (18.261 ÷ 240) x 100= 7.609 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 81: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/81.jpg)
Prepared by: JR Ejorcadas BLOCK No. 21
North Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 46.97 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVANORTH = 46.97 + (0.16 x 10) = 48.57 kVA No. of Bundles: 1kVA SpanNORTH = 144.08 kVA
Total Current Computation:INORTH = (kVANORTH) ÷ (System Voltage)
= (48.57 x1000)/240= 202.375 A
Total Distance Computation:
dNORTH = (kVA-SpanNORTH ÷ kVANORTH) x (Pole Distance)= (144.08 ÷ 48.57)x150= 444.966 ft
Circular Mill Computation:CM = (24 x INORTH x dNORTH ) / (VDC x B)
= (24 x 202.375 x 444.966) / (12 x 1)= 180100 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 000 AWG Copper Conductor, 2-Wires167806 7 Strands Hard Drawn Copper Conductor
211600 CMILS
(For 3 ft. Spacing Between Two 211600 CM Wires:)Based on Table
Ra = 0.382 Ω/mileXa = 0.518 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.133 Ω/mile
Xt = Xa + Xd = 0.651 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
211600
![Page 82: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/82.jpg)
Ratio= Xt ÷ Ra
= 0.651307678568674 ÷ 0.382= 1.705
Based on Table : AC DROP FACTOR @ 85% = 1.85
AC Voltage Drop Calculation:
Vdc Actual = (24 x INORTH x dNORTH) ÷ (CM x B)= (24 x 202.375 x 444.966) ÷ (211600 x 1)= 10.214 V
Vac Drop = Vdc Actual x AC Drop Factor= 10.214 x 1.85= 18.896 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (18.896 ÷ 240) x 100= 7.873 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 83: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/83.jpg)
South Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 48.61 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVASOUTH = 48.614 + (0.16 x 10) = 50.21 kVA No. of Bundles: 1kVA SpanSOUTH = 144.84 kVA
Total Current Computation:ISOUTH = (kVASOUTH) ÷ (System Voltage)
= (50.214 x1000)/240= 209.225 A
Total Distance Computation:
dSOUTH = (kVA-SpanSOUTH ÷ kVASOUTH) x (Pole Distance)= (144.84 ÷ 50.214)x150= 432.668 ft
Circular Mill Computation:CM = (24 x ISOUTH x dSOUTH ) / (VDC x B)
= (24 x 209.225 x 432.668) / (12 x 1)= 181050 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 000 AWG Copper Conductor, 2-Wires167806 7 Strands Hard Drawn Copper Conductor
211600 CMILS
(For 3 ft. Spacing Between Two 211600 CM Wires:)Based on Table
Ra = 0.382 Ω/mileXa = 0.518 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.1333 Ω/mile
Xt = Xa + Xd = 0.6513 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
211600
![Page 84: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/84.jpg)
Ratio= Xt ÷ Ra
= 0.651307678568674 ÷ 0.382= 1.705
Based on Table : AC DROP FACTOR @ 85% = 1.85
AC Voltage Drop Calculation:
Vdc Actual = (24 x ISOUTH x dSOUTH) ÷ (CM x B)= (24 x 209.225 x 432.668) ÷ (211600 x 1)= 10.267 V
Vac Drop = Vdc Actual x AC Drop Factor= 10.267 x 1.85= 18.994 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (18.994 ÷ 240) x 100= 7.914 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 85: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/85.jpg)
Prepared by: JR Ejorcadas BLOCK No. 22
North Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 61.08 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVANORTH = 61.08 + (0.16 x 10) = 62.68 kVA No. of Bundles: 1kVA SpanNORTH = 236.48 kVA
Total Current Computation:INORTH = (kVANORTH) ÷ (System Voltage)
= (62.68 x1000)/240= 261.167 A
Total Distance Computation:
dNORTH = (kVA-SpanNORTH ÷ kVANORTH) x (Pole Distance)= (236.482 ÷ 62.68)x150= 565.927 ft
Circular Mill Computation:CM = (24 x INORTH x dNORTH ) / (VDC x B)
= (24 x 261.167 x 565.927) / (12 x 1)= 295603 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 300 MCM Copper Conductor, 2-Wires300000 19 Strands Hard Drawn Copper Conductor
300000 CMILS
(For 3 ft. Spacing Between Two 300000 CM Wires:)Based on Table
Ra = 0.215 Ω/mileXa = 0.476 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.133 Ω/mile
Xt = Xa + Xd = 0.609 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
300000
![Page 86: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/86.jpg)
Ratio= Xt ÷ Ra
= 0.609307678568674 ÷ 0.215= 2.834
Based on Table : AC DROP FACTOR @ 85% = 2.6
AC Voltage Drop Calculation:
Vdc Actual = (24 x INORTH x dNORTH) ÷ (CM x B)= (24 x 261.167 x 565.927) ÷ (300000 x 1)= 11.824 V
Vac Drop = Vdc Actual x AC Drop Factor= 11.824 x 2.6= 30.742 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (30.742 ÷ 240) x 100= 12.809 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 87: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/87.jpg)
South Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 61.61 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVASOUTH = 61.608 + (0.16 x 10) = 63.21 kVA No. of Bundles: 1kVA SpanSOUTH = 237.09 kVA
Total Current Computation:ISOUTH = (kVASOUTH) ÷ (System Voltage)
= (63.208 x1000)/240= 263.367 A
Total Distance Computation:
dSOUTH = (kVA-SpanSOUTH ÷ kVASOUTH) x (Pole Distance)= (237.094 ÷ 63.208)x150= 562.652 ft
Circular Mill Computation:CM = (24 x ISOUTH x dSOUTH ) / (VDC x B)
= (24 x 263.367 x 562.652) / (12 x 1)= 296368 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 300 MCM Copper Conductor, 2-Wires300000 19 Strands Hard Drawn Copper Conductor
300000 CMILS
(For 3 ft. Spacing Between Two 300000 CM Wires:)Based on Table
Ra = 0.215 Ω/mileXa = 0.476 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.1333 Ω/mile
Xt = Xa + Xd = 0.6093 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
300000
![Page 88: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/88.jpg)
Ratio= Xt ÷ Ra
= 0.609307678568674 ÷ 0.215= 2.834
Based on Table : AC DROP FACTOR @ 85% = 2.6
AC Voltage Drop Calculation:
Vdc Actual = (24 x ISOUTH x dSOUTH) ÷ (CM x B)= (24 x 263.367 x 562.652) ÷ (300000 x 1)= 11.855 V
Vac Drop = Vdc Actual x AC Drop Factor= 11.855 x 2.6= 30.823 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (30.823 ÷ 240) x 100= 12.843 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 89: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/89.jpg)
Prepared by: JR Ejorcadas BLOCK No. 23
North Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 76.67 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVANORTH = 76.672 + (0.16 x 10) = 78.27 kVA No. of Bundles: 1kVA SpanNORTH = 290.05 kVA
Total Current Computation:INORTH = (kVANORTH) ÷ (System Voltage)
= (78.272 x1000)/240= 326.133 A
Total Distance Computation:
dNORTH = (kVA-SpanNORTH ÷ kVANORTH) x (Pole Distance)= (290.05 ÷ 78.272)x150= 555.850 ft
Circular Mill Computation:CM = (24 x INORTH x dNORTH ) / (VDC x B)
= (24 x 326.133 x 555.850) / (12 x 1)= 362562 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 400 MCM Copper Conductor, 2-Wires400000 19 Strands Hard Drawn Copper Conductor
400000 CMILS
(For 3 ft. Spacing Between Two 400000 CM Wires:)Based on Table
Ra = 0.162 Ω/mileXa = 0.458 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.133 Ω/mile
Xt = Xa + Xd = 0.591 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
400000
![Page 90: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/90.jpg)
Ratio= Xt ÷ Ra
= 0.591307678568674 ÷ 0.162= 3.65
Based on Table : AC DROP FACTOR @ 85% = 3.1
AC Voltage Drop Calculation:
Vdc Actual = (24 x INORTH x dNORTH) ÷ (CM x B)= (24 x 326.133 x 555.850) ÷ (400000 x 1)= 10.877 V
Vac Drop = Vdc Actual x AC Drop Factor= 10.877 x 3.1= 33.719 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (33.719 ÷ 240) x 100= 14.050 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 91: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/91.jpg)
South Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 69.17 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVASOUTH = 69.172 + (0.16 x 10) = 70.77 kVA No. of Bundles: 1kVA SpanSOUTH = 289.66 kVA
Total Current Computation:ISOUTH = (kVASOUTH) ÷ (System Voltage)
= (70.772 x1000)/240= 294.883 A
Total Distance Computation:
dSOUTH = (kVA-SpanSOUTH ÷ kVASOUTH) x (Pole Distance)= (289.662 ÷ 70.772)x150= 613.933 ft
Circular Mill Computation:CM = (24 x ISOUTH x dSOUTH ) / (VDC x B)
= (24 x 294.883 x 613.933) / (12 x 1)= 362077 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 400 MCM Copper Conductor, 2-Wires400000 19 Strands Hard Drawn Copper Conductor
400000 CMILS
(For 3 ft. Spacing Between Two 400000 CM Wires:)Based on Table
Ra = 0.162 Ω/mileXa = 0.458 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.1333 Ω/mile
Xt = Xa + Xd = 0.5913 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
400000
![Page 92: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/92.jpg)
Ratio= Xt ÷ Ra
= 0.591307678568674 ÷ 0.162= 3.65
Based on Table : AC DROP FACTOR @ 85% = 3.1
AC Voltage Drop Calculation:
Vdc Actual = (24 x ISOUTH x dSOUTH) ÷ (CM x B)= (24 x 294.883 x 613.933) ÷ (400000 x 1)= 10.862 V
Vac Drop = Vdc Actual x AC Drop Factor= 10.862 x 3.1= 33.672 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (33.672 ÷ 240) x 100= 14.030 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 93: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/93.jpg)
Prepared by: JR Ejorcadas BLOCK No. 24
North Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 44.37 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVANORTH = 44.374 + (0.16 x 10) = 45.97 kVA No. of Bundles: 1kVA SpanNORTH = 137.36 kVA
Total Current Computation:INORTH = (kVANORTH) ÷ (System Voltage)
= (45.974 x1000)/240= 191.558 A
Total Distance Computation:
dNORTH = (kVA-SpanNORTH ÷ kVANORTH) x (Pole Distance)= (137.356 ÷ 45.974)x150= 448.153 ft
Circular Mill Computation:CM = (24 x INORTH x dNORTH ) / (VDC x B)
= (24 x 191.558 x 448.153) / (12 x 1)= 171695 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 0000 AWG Copper Conductor, 2-Wires211600 19 Strands Hard Drawn Copper Conductor
211600 CMILS
(For 3 ft. Spacing Between Two 211600 CM Wires:)Based on Table
Ra = 0.303 Ω/mileXa = 0.496 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.133 Ω/mile
Xt = Xa + Xd = 0.629 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
211600
![Page 94: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/94.jpg)
Ratio= Xt ÷ Ra
= 0.629307678568674 ÷ 0.303= 2.0769
Based on Table : AC DROP FACTOR @ 85% = 2.03
AC Voltage Drop Calculation:
Vdc Actual = (24 x INORTH x dNORTH) ÷ (CM x B)= (24 x 191.558 x 448.153) ÷ (211600 x 1)= 9.737 V
Vac Drop = Vdc Actual x AC Drop Factor= 9.737 x 2.03= 19.766 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (19.766 ÷ 240) x 100= 8.236 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 95: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/95.jpg)
South Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 49.65 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVASOUTH = 49.654 + (0.16 x 10) = 51.25 kVA No. of Bundles: 1kVA SpanSOUTH = 137.11 kVA
Total Current Computation:ISOUTH = (kVASOUTH) ÷ (System Voltage)
= (51.254 x1000)/240= 213.558 A
Total Distance Computation:
dSOUTH = (kVA-SpanSOUTH ÷ kVASOUTH) x (Pole Distance)= (137.114 ÷ 51.254)x150= 401.278 ft
Circular Mill Computation:CM = (24 x ISOUTH x dSOUTH ) / (VDC x B)
= (24 x 213.558 x 401.278) / (12 x 1)= 171392 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 0000 AWG Copper Conductor, 2-Wires211600 19 Strands Hard Drawn Copper Conductor
211600 CMILS
(For 3 ft. Spacing Between Two 211600 CM Wires:)Based on Table
Ra = 0.303 Ω/mileXa = 0.496 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.1333 Ω/mile
Xt = Xa + Xd = 0.6293 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
211600
![Page 96: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/96.jpg)
Ratio= Xt ÷ Ra
= 0.629307678568674 ÷ 0.303= 2.0769
Based on Table : AC DROP FACTOR @ 85% = 2.03
AC Voltage Drop Calculation:
Vdc Actual = (24 x ISOUTH x dSOUTH) ÷ (CM x B)= (24 x 213.558 x 401.278) ÷ (211600 x 1)= 9.720 V
Vac Drop = Vdc Actual x AC Drop Factor= 9.720 x 2.03= 19.732 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (19.732 ÷ 240) x 100= 8.222 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 97: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/97.jpg)
Prepared by: JR Ejorcadas BLOCK No. 25
North Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 60.11 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVANORTH = 60.11 + (0.16 x 10) = 61.71 kVA No. of Bundles: 1kVA SpanNORTH = 241.85 kVA
Total Current Computation:INORTH = (kVANORTH) ÷ (System Voltage)
= (61.71 x1000)/240= 257.125 A
Total Distance Computation:
dNORTH = (kVA-SpanNORTH ÷ kVANORTH) x (Pole Distance)= (241.846 ÷ 61.71)x150= 587.861 ft
Circular Mill Computation:CM = (24 x INORTH x dNORTH ) / (VDC x B)
= (24 x 257.125 x 587.861) / (12 x 1)= 302308 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 400 MCM Copper Conductor, 2-Wires400000 19 Strands Hard Drawn Copper Conductor
400000 CMILS
(For 3 ft. Spacing Between Two 400000 CM Wires:)Based on Table
Ra = 0.162 Ω/mileXa = 0.458 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.133 Ω/mile
Xt = Xa + Xd = 0.591 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
400000
![Page 98: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/98.jpg)
Ratio= Xt ÷ Ra
= 0.591307678568674 ÷ 0.162= 3.65
Based on Table : AC DROP FACTOR @ 85% = 3.1
AC Voltage Drop Calculation:
Vdc Actual = (24 x INORTH x dNORTH) ÷ (CM x B)= (24 x 257.125 x 587.861) ÷ (400000 x 1)= 9.069 V
Vac Drop = Vdc Actual x AC Drop Factor= 9.069 x 3.1= 28.114 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (28.114 ÷ 240) x 100= 11.714 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 99: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/99.jpg)
South Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 59.89 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVASOUTH = 59.89 + (0.16 x 10) = 61.49 kVA No. of Bundles: 1kVA SpanSOUTH = 241.64 kVA
Total Current Computation:ISOUTH = (kVASOUTH) ÷ (System Voltage)
= (61.49 x1000)/240= 256.208 A
Total Distance Computation:
dSOUTH = (kVA-SpanSOUTH ÷ kVASOUTH) x (Pole Distance)= (241.638 ÷ 61.49)x150= 589.457 ft
Circular Mill Computation:CM = (24 x ISOUTH x dSOUTH ) / (VDC x B)
= (24 x 256.208 x 589.457) / (12 x 1)= 302047 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 400 MCM Copper Conductor, 2-Wires400000 19 Strands Hard Drawn Copper Conductor
400000 CMILS
(For 3 ft. Spacing Between Two 400000 CM Wires:)Based on Table
Ra = 0.162 Ω/mileXa = 0.458 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.1333 Ω/mile
Xt = Xa + Xd = 0.5913 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
400000
![Page 100: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/100.jpg)
Ratio= Xt ÷ Ra
= 0.591307678568674 ÷ 0.162= 3.65
Based on Table : AC DROP FACTOR @ 85% = 3.1
AC Voltage Drop Calculation:
Vdc Actual = (24 x ISOUTH x dSOUTH) ÷ (CM x B)= (24 x 256.208 x 589.457) ÷ (400000 x 1)= 9.061 V
Vac Drop = Vdc Actual x AC Drop Factor= 9.061 x 3.1= 28.089 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (28.089 ÷ 240) x 100= 11.704 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 101: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/101.jpg)
Prepared by: JR Ejorcadas BLOCK No. 26
North Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 66.33 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVANORTH = 66.334 + (0.16 x 10) = 67.93 kVA No. of Bundles: 1kVA SpanNORTH = 254.51 kVA
Total Current Computation:INORTH = (kVANORTH) ÷ (System Voltage)
= (67.934 x1000)/240= 283.058 A
Total Distance Computation:
dNORTH = (kVA-SpanNORTH ÷ kVANORTH) x (Pole Distance)= (254.506 ÷ 67.934)x150= 561.956 ft
Circular Mill Computation:CM = (24 x INORTH x dNORTH ) / (VDC x B)
= (24 x 283.058 x 561.956) / (12 x 1)= 318132 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 400 MCM Copper Conductor, 2-Wires400000 19 Strands Hard Drawn Copper Conductor
400000 CMILS
(For 3 ft. Spacing Between Two 400000 CM Wires:)Based on Table
Ra = 0.162 Ω/mileXa = 0.458 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.133 Ω/mile
Xt = Xa + Xd = 0.591 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
400000
![Page 102: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/102.jpg)
Ratio= Xt ÷ Ra
= 0.591307678568674 ÷ 0.162= 3.65
Based on Table : AC DROP FACTOR @ 85% = 3.1
AC Voltage Drop Calculation:
Vdc Actual = (24 x INORTH x dNORTH) ÷ (CM x B)= (24 x 283.058 x 561.956) ÷ (400000 x 1)= 9.544 V
Vac Drop = Vdc Actual x AC Drop Factor= 9.544 x 3.1= 29.586 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (29.586 ÷ 240) x 100= 12.328 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 103: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/103.jpg)
South Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 78.88 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVASOUTH = 78.88 + (0.16 x 10) = 80.48 kVA No. of Bundles: 1kVA SpanSOUTH = 255.07 kVA
Total Current Computation:ISOUTH = (kVASOUTH) ÷ (System Voltage)
= (80.48 x1000)/240= 335.333 A
Total Distance Computation:
dSOUTH = (kVA-SpanSOUTH ÷ kVASOUTH) x (Pole Distance)= (255.07 ÷ 80.48)x150= 475.404 ft
Circular Mill Computation:CM = (24 x ISOUTH x dSOUTH ) / (VDC x B)
= (24 x 335.333 x 475.404) / (12 x 1)= 318837 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 400 MCM Copper Conductor, 2-Wires400000 19 Strands Hard Drawn Copper Conductor
400000 CMILS
(For 3 ft. Spacing Between Two 400000 CM Wires:)Based on Table
Ra = 0.162 Ω/mileXa = 0.458 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.1333 Ω/mile
Xt = Xa + Xd = 0.5913 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
400000
![Page 104: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/104.jpg)
Ratio= Xt ÷ Ra
= 0.591307678568674 ÷ 0.162= 3.65
Based on Table : AC DROP FACTOR @ 85% = 3.1
AC Voltage Drop Calculation:
Vdc Actual = (24 x ISOUTH x dSOUTH) ÷ (CM x B)= (24 x 335.333 x 475.404) ÷ (400000 x 1)= 9.565 V
Vac Drop = Vdc Actual x AC Drop Factor= 9.565 x 3.1= 29.652 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (29.652 ÷ 240) x 100= 12.355 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 105: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/105.jpg)
Prepared by: JR Ejorcadas BLOCK No. 27
North Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 55.79 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVANORTH = 55.793 + (0.16 x 10) = 57.39 kVA No. of Bundles: 1kVA SpanNORTH = 137.82 kVA
Total Current Computation:INORTH = (kVANORTH) ÷ (System Voltage)
= (57.393 x1000)/240= 239.138 A
Total Distance Computation:
dNORTH = (kVA-SpanNORTH ÷ kVANORTH) x (Pole Distance)= (137.821 ÷ 57.393)x150= 360.203 ft
Circular Mill Computation:CM = (24 x INORTH x dNORTH ) / (VDC x B)
= (24 x 239.138 x 360.203) / (12 x 1)= 172276 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 0000 AWG Copper Conductor, 2-Wires211600 19 Strands Hard Drawn Copper Conductor
211600 CMILS
(For 3 ft. Spacing Between Two 211600 CM Wires:)Based on Table
Ra = 0.303 Ω/mileXa = 0.496 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.133 Ω/mile
Xt = Xa + Xd = 0.629 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
211600
![Page 106: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/106.jpg)
Ratio= Xt ÷ Ra
= 0.629307678568674 ÷ 0.303= 2.0769
Based on Table : AC DROP FACTOR @ 85% = 2.03
AC Voltage Drop Calculation:
Vdc Actual = (24 x INORTH x dNORTH) ÷ (CM x B)= (24 x 239.138 x 360.203) ÷ (211600 x 1)= 9.770 V
Vac Drop = Vdc Actual x AC Drop Factor= 9.770 x 2.03= 19.833 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (19.833 ÷ 240) x 100= 8.264 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 107: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/107.jpg)
South Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 40.58 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVASOUTH = 40.579 + (0.16 x 10) = 42.18 kVA No. of Bundles: 1kVA SpanSOUTH = 137.39 kVA
Total Current Computation:ISOUTH = (kVASOUTH) ÷ (System Voltage)
= (42.179 x1000)/240= 175.746 A
Total Distance Computation:
dSOUTH = (kVA-SpanSOUTH ÷ kVASOUTH) x (Pole Distance)= (137.393 ÷ 42.179)x150= 488.607 ft
Circular Mill Computation:CM = (24 x ISOUTH x dSOUTH ) / (VDC x B)
= (24 x 175.746 x 488.607) / (12 x 1)= 171741 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 0000 AWG Copper Conductor, 2-Wires211600 19 Strands Hard Drawn Copper Conductor
211600 CMILS
(For 3 ft. Spacing Between Two 211600 CM Wires:)Based on Table
Ra = 0.303 Ω/mileXa = 0.496 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.1333 Ω/mile
Xt = Xa + Xd = 0.6293 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
211600
![Page 108: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/108.jpg)
Ratio= Xt ÷ Ra
= 0.629307678568674 ÷ 0.303= 2.0769
Based on Table : AC DROP FACTOR @ 85% = 2.03
AC Voltage Drop Calculation:
Vdc Actual = (24 x ISOUTH x dSOUTH) ÷ (CM x B)= (24 x 175.746 x 488.607) ÷ (211600 x 1)= 9.740 V
Vac Drop = Vdc Actual x AC Drop Factor= 9.740 x 2.03= 19.772 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (19.772 ÷ 240) x 100= 8.238 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 109: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/109.jpg)
Prepared by: JR Ejorcadas BLOCK No. 28
North Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 73.90 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVANORTH = 73.902 + (0.16 x 10) = 75.50 kVA No. of Bundles: 1kVA SpanNORTH = 294.63 kVA
Total Current Computation:INORTH = (kVANORTH) ÷ (System Voltage)
= (75.502 x1000)/240= 314.592 A
Total Distance Computation:
dNORTH = (kVA-SpanNORTH ÷ kVANORTH) x (Pole Distance)= (294.628 ÷ 75.502)x150= 585.338 ft
Circular Mill Computation:CM = (24 x INORTH x dNORTH ) / (VDC x B)
= (24 x 314.592 x 585.338) / (12 x 1)= 368285 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 400 MCM Copper Conductor, 2-Wires400000 19 Strands Hard Drawn Copper Conductor
400000 CMILS
(For 3 ft. Spacing Between Two 400000 CM Wires:)Based on Table
Ra = 0.162 Ω/mileXa = 0.458 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.133 Ω/mile
Xt = Xa + Xd = 0.591 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
400000
![Page 110: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/110.jpg)
Ratio= Xt ÷ Ra
= 0.591307678568674 ÷ 0.162= 3.65
Based on Table : AC DROP FACTOR @ 85% = 3.1
AC Voltage Drop Calculation:
Vdc Actual = (24 x INORTH x dNORTH) ÷ (CM x B)= (24 x 314.592 x 585.338) ÷ (400000 x 1)= 11.049 V
Vac Drop = Vdc Actual x AC Drop Factor= 11.049 x 3.1= 34.252 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (34.252 ÷ 240) x 100= 14.272 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 111: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/111.jpg)
South Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 71.22 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVASOUTH = 71.218 + (0.16 x 10) = 72.82 kVA No. of Bundles: 1kVA SpanSOUTH = 295.18 kVA
Total Current Computation:ISOUTH = (kVASOUTH) ÷ (System Voltage)
= (72.818 x1000)/240= 303.408 A
Total Distance Computation:
dSOUTH = (kVA-SpanSOUTH ÷ kVASOUTH) x (Pole Distance)= (295.176 ÷ 72.818)x150= 608.042 ft
Circular Mill Computation:CM = (24 x ISOUTH x dSOUTH ) / (VDC x B)
= (24 x 303.408 x 608.042) / (12 x 1)= 368970 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 400 MCM Copper Conductor, 2-Wires400000 19 Strands Hard Drawn Copper Conductor
400000 CMILS
(For 3 ft. Spacing Between Two 400000 CM Wires:)Based on Table
Ra = 0.162 Ω/mileXa = 0.458 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.1333 Ω/mile
Xt = Xa + Xd = 0.5913 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
400000
![Page 112: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/112.jpg)
Ratio= Xt ÷ Ra
= 0.591307678568674 ÷ 0.162= 3.65
Based on Table : AC DROP FACTOR @ 85% = 3.1
AC Voltage Drop Calculation:
Vdc Actual = (24 x ISOUTH x dSOUTH) ÷ (CM x B)= (24 x 303.408 x 608.042) ÷ (400000 x 1)= 11.069 V
Vac Drop = Vdc Actual x AC Drop Factor= 11.069 x 3.1= 34.314 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (34.314 ÷ 240) x 100= 14.298 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 113: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/113.jpg)
Prepared by: JR Ejorcadas BLOCK No. 29
North Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 49.03 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVANORTH = 49.03 + (0.16 x 10) = 50.63 kVA No. of Bundles: 1kVA SpanNORTH = 233.92 kVA
Total Current Computation:INORTH = (kVANORTH) ÷ (System Voltage)
= (50.63 x1000)/240= 210.958 A
Total Distance Computation:
dNORTH = (kVA-SpanNORTH ÷ kVANORTH) x (Pole Distance)= (233.924 ÷ 50.63)x150= 693.040 ft
Circular Mill Computation:CM = (24 x INORTH x dNORTH ) / (VDC x B)
= (24 x 210.958 x 693.040) / (12 x 1)= 292405 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 300 MCM Copper Conductor, 2-Wires300000 19 Strands Hard Drawn Copper Conductor
300000 CMILS
(For 3 ft. Spacing Between Two 300000 CM Wires:)Based on Table
Ra = 0.215 Ω/mileXa = 0.476 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.133 Ω/mile
Xt = Xa + Xd = 0.609 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
300000
![Page 114: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/114.jpg)
Ratio= Xt ÷ Ra
= 0.609307678568674 ÷ 0.215= 2.834
Based on Table : AC DROP FACTOR @ 85% = 2.6
AC Voltage Drop Calculation:
Vdc Actual = (24 x INORTH x dNORTH) ÷ (CM x B)= (24 x 210.958 x 693.040) ÷ (300000 x 1)= 11.696 V
Vac Drop = Vdc Actual x AC Drop Factor= 11.696 x 2.6= 30.410 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (30.410 ÷ 240) x 100= 12.671 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 115: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/115.jpg)
South Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 47.30 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVASOUTH = 47.302 + (0.16 x 10) = 48.90 kVA No. of Bundles: 1kVA SpanSOUTH = 234.70 kVA
Total Current Computation:ISOUTH = (kVASOUTH) ÷ (System Voltage)
= (48.902 x1000)/240= 203.758 A
Total Distance Computation:
dSOUTH = (kVA-SpanSOUTH ÷ kVASOUTH) x (Pole Distance)= (234.696 ÷ 48.902)x150= 719.897 ft
Circular Mill Computation:CM = (24 x ISOUTH x dSOUTH ) / (VDC x B)
= (24 x 203.758 x 719.897) / (12 x 1)= 293370 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 300 MCM Copper Conductor, 2-Wires300000 19 Strands Hard Drawn Copper Conductor
300000 CMILS
(For 3 ft. Spacing Between Two 300000 CM Wires:)Based on Table
Ra = 0.215 Ω/mileXa = 0.476 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.1333 Ω/mile
Xt = Xa + Xd = 0.6093 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
300000
![Page 116: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/116.jpg)
Ratio= Xt ÷ Ra
= 0.609307678568674 ÷ 0.215= 2.834
Based on Table : AC DROP FACTOR @ 85% = 2.6
AC Voltage Drop Calculation:
Vdc Actual = (24 x ISOUTH x dSOUTH) ÷ (CM x B)= (24 x 203.758 x 719.897) ÷ (300000 x 1)= 11.735 V
Vac Drop = Vdc Actual x AC Drop Factor= 11.735 x 2.6= 30.511 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (30.511 ÷ 240) x 100= 12.713 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 117: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/117.jpg)
Prepared by: JR Ejorcadas BLOCK No. 30
North Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 52.85 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVANORTH = 52.854 + (0.16 x 10) = 54.45 kVA No. of Bundles: 1kVA SpanNORTH = 194.86 kVA
Total Current Computation:INORTH = (kVANORTH) ÷ (System Voltage)
= (54.454 x1000)/240= 226.892 A
Total Distance Computation:
dNORTH = (kVA-SpanNORTH ÷ kVANORTH) x (Pole Distance)= (194.864 ÷ 54.454)x150= 536.776 ft
Circular Mill Computation:CM = (24 x INORTH x dNORTH ) / (VDC x B)
= (24 x 226.892 x 536.776) / (12 x 1)= 243580 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 250 MCM Copper Conductor, 2-Wires250000 19 Strands Hard Drawn Copper Conductor
250000 CMILS
(For 3 ft. Spacing Between Two 250000 CM Wires:)Based on Table
Ra = 0.257 Ω/mileXa = 0.487 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.133 Ω/mile
Xt = Xa + Xd = 0.62 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
250000
![Page 118: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/118.jpg)
Ratio= Xt ÷ Ra
= 0.620307678568674 ÷ 0.257= 2.4136
Based on Table : AC DROP FACTOR @ 85% = 2.28
AC Voltage Drop Calculation:
Vdc Actual = (24 x INORTH x dNORTH) ÷ (CM x B)= (24 x 226.892 x 536.776) ÷ (250000 x 1)= 11.692 V
Vac Drop = Vdc Actual x AC Drop Factor= 11.692 x 2.28= 26.658 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (26.658 ÷ 240) x 100= 11.108 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 119: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/119.jpg)
South Side Computations:
Pole Distance = 150 ft # of Poles = 10 polesSystem Voltage = 240 V kVAresidential = 43.19 kVAVoltage Drop = 5 %
VDC = System Voltage x Voltage Drop = 240 x 0.05 = 12 V
kVASOUTH = 43.194 + (0.16 x 10) = 44.79 kVA No. of Bundles: 1kVA SpanSOUTH = 193.98 kVA
Total Current Computation:ISOUTH = (kVASOUTH) ÷ (System Voltage)
= (44.794 x1000)/240= 186.642 A
Total Distance Computation:
dSOUTH = (kVA-SpanSOUTH ÷ kVASOUTH) x (Pole Distance)= (193.976 ÷ 44.794)x150= 649.560 ft
Circular Mill Computation:CM = (24 x ISOUTH x dSOUTH ) / (VDC x B)
= (24 x 186.642 x 649.560) / (12 x 1)= 242470 CM ≈ CM
Based on Table For Circular Mill:
Use: No. 250 MCM Copper Conductor, 2-Wires250000 19 Strands Hard Drawn Copper Conductor
250000 CMILS
(For 3 ft. Spacing Between Two 250000 CM Wires:)Based on Table
Ra = 0.257 Ω/mileXa = 0.487 Ω/mileXd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile= 0.1333 Ω/mile
Xt = Xa + Xd = 0.6203 Ω/mile
Reactance and Resistance Ratio (X t/Ra):
250000
![Page 120: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/120.jpg)
Ratio= Xt ÷ Ra
= 0.620307678568674 ÷ 0.257= 2.4136
Based on Table : AC DROP FACTOR @ 85% = 2.28
AC Voltage Drop Calculation:
Vdc Actual = (24 x ISOUTH x dSOUTH) ÷ (CM x B)= (24 x 186.642 x 649.560) ÷ (250000 x 1)= 11.639 V
Vac Drop = Vdc Actual x AC Drop Factor= 11.639 x 2.28= 26.537 V
Voltage Regulation Computation:
%VR = (Vac Drop ÷ System Voltage) x 100= (26.537 ÷ 240) x 100= 11.057 %
Note: The addditional 0.16 kVA per pole is the Street light Load per Pole
![Page 121: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/121.jpg)
Per Block Transformers Sizing Calculation
Block No: 1
kVANORTH + kVASOUTH
= 42.822 + 58.396= kVA
At 80% Transformer Loading:
kVA
For Transformer Specification:
Use: 167 kVA Distribution Transformer, 19.92kV/240V, 1ph, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)1H+G MECO Incoming
For Fuse Rating:
Where: Vp =19.92 kV
Use: 20 Amps., 19.92kV Fuse Cut-out (Open Type)
For Lightning Arrester:
L.A = = 19.92 kV (125%) = 24.9 kV
Use: 27 kV, Lightning Arrester, Expulsion Type
Block No: 2
kVANORTH + kVASOUTH
= 54.2 + 67.008= kVA
kVA
For Transformer Specification:
Use: 167 kVA Distribution Transformer, 19.92kV/240V, 1ph, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)1H+G MECO Incoming
For Fuse Rating:
Where: Vp =19.92 kV
Use: 25 Amps., 19.92kV Fuse Cut-out (Open Type)
1Ф Transformer =
1Ф Transformer =
22.82
=
Vp x 125%
19.05
x 300%
Fuse Rating =126.5225
x 300%19.92
Fuse Rating = kVA x 1000
Primary Voltage
1Ф Transformer =
x 300% =19.92
121.21
At 80% Transformer Loading:
1Ф Transformer = 151.51
Primary Voltage
Fuse Rating =151.51
Fuse Rating = kVA x 1000
x 300%
101.22
126.52
![Page 122: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/122.jpg)
For Lightning Arrester:
L.A = = 19.92 kV (125%) = 24.9 kV
Use: 27 kV, Lightning Arrester, Expulsion TypePer Block Transformers Sizing Calculation
Block No: 3
kVANORTH + kVASOUTH
= 79.596 + 65.5= kVA
At 80% Transformer Loading:
kVA
For Transformer Specification:
Use: 200 kVA Distribution Transformer, 19.92kV/240V, 1ph, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)1H+G MECO Incoming
For Fuse Rating:
Where: Vp =19.92 kV
Use: 30 Amps., 19.92kV Fuse Cut-out (Open Type)
For Lightning Arrester:
L.A = = 19.92 kV (125%) = 24.9 kV
Use: 27 kV, Lightning Arrester, Expulsion Type
Block No: 4
kVANORTH + kVASOUTH
= 59.346 + 60.752= kVA
At 80% Transformer Loading:
kVA
For Transformer Specification:
Use: 167 kVA Distribution Transformer, 19.92kV/240V, 1ph, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)1H+G MECO Incoming
For Fuse Rating:
Where: Vp =19.92 kV
1Ф Transformer = 181.37
Fuse Rating =
Fuse Rating =181.37
x 300%
1Ф Transformer = 150.12
Fuse Rating = kVA x 1000
x 300%Primary Voltage
Vp x 125%
1Ф Transformer =
120.10
= 27.3119.92
Vp x 125%
1Ф Transformer =
145.10
kVA x 1000 x 300%
Primary Voltage
![Page 123: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/123.jpg)
Use: 25 Amps., 19.92kV Fuse Cut-out (Open Type)
For Lightning Arrester:
L.A = = 19.92 kV (125%) = 24.9 kV
Use: 27 kV, Lightning Arrester, Expulsion TypePer Block Transformers Sizing Calculation
Block No: 5
kVANORTH + kVASOUTH
= 80.764 + 66.578= kVA
At 80% Transformer Loading:
kVA
For Transformer Specification:
Use: 200 kVA Distribution Transformer, 19.91kV/240V, 1ph, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)1H+G MECO Incoming
For Fuse Rating:
Where: Vp =19.92 kV
Use: 30 Amps., 19.92kV Fuse Cut-out (Open Type)
For Lightning Arrester:
L.A = = 19.92 kV (125%) = 24.9 kV
Use: 27 kV, Lightning Arrester, Expulsion Type
Block No: 6
kVANORTH + kVASOUTH
= 55.558 + 65.644= kVA
At 80% Transformer Loading:
kVA
For Transformer Specification:
Use: 167 kVA Distribution Transformer, 19.92kV/240V, 1ph, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)1H+G MECO Incoming
1Ф Transformer = 151.50
121.20
1Ф Transformer =
Vp x 125%
Fuse Rating =184.1775
x 300% = 27.7419.92
Fuse Rating = kVA x 1000
x 300%Primary Voltage
1Ф Transformer = 184.18
147.34
1Ф Transformer =
Vp x 125%
Fuse Rating =150.1225
x 300% = 22.6119.92
![Page 124: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/124.jpg)
For Fuse Rating:
Where: Vp =19.92 kV
Use: 25 Amps., 19.92kV Fuse Cut-out (Open Type)
For Lightning Arrester:
L.A = = 19.92 kV (125%) = 24.9 kV
Use: 27 kV, Lightning Arrester, Expulsion Type
Vp x 125%
Fuse Rating =151.5025
x 300% = 22.8219.92
Fuse Rating = kVA x 1000
x 300%Primary Voltage
![Page 125: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/125.jpg)
Per Block Transformers Sizing Calculation
Block No: 7
kVANORTH + kVASOUTH
= 52.272 + 48.018= kVA
At 80% Transformer Loading:
kVA
For Transformer Specification:
Use: 167 kVA Distribution Transformer, 19.91kV/240V, 1ph, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)1H+G MECO Incoming
For Fuse Rating:
Where: Vp =19.92 kV
Use: 20 Amps., 19.92kV Fuse Cut-out (Open Type)
For Lightning Arrester:
L.A = = 19.92 kV (125%) = 24.9 kV
Use: 27 kV, Lightning Arrester, Expulsion Type
Block No: 8
kVANORTH + kVASOUTH
= 73.248 + 76.618= kVA
At 80% Transformer Loading:
kVA
For Transformer Specification:
Use: 200 kVA Distribution Transformer, 19.91kV/240V, 1ph, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)1H+G MECO Incoming
For Fuse Rating:
Where: Vp =19.92 kV
Use: 30 Amps., 19.92kV Fuse Cut-out (Open Type)
= 28.2119.92
Fuse Rating = kVA x 1000
x 300%Primary Voltage
187.3325x 300%
x 300%Primary Voltage
Fuse Rating =125.3625
1Ф Transformer =
100.29
1Ф Transformer = 125.36
Fuse Rating = kVA x 1000
18.8819.92
Vp x 125%
1Ф Transformer =
1Ф Transformer = 187.33
=x 300%
149.87
Fuse Rating =
![Page 126: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/126.jpg)
For Lightning Arrester:
L.A = = 19.92 kV (125%) = 24.9 kV
Use: 27 kV, Lightning Arrester, Expulsion TypePer Block Transformers Sizing Calculation
Block No: 9
kVANORTH + kVASOUTH
= 79.668 + 68.648= kVA
At 80% Transformer Loading:
kVA
For Transformer Specification:
Use: 200 kVA Distribution Transformer, 19.91kV/240V, 1ph, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)1H+G MECO Incoming
For Fuse Rating:
Where: Vp =19.92 kV
Use: 30 Amps., 19.92kV Fuse Cut-out (Open Type)
For Lightning Arrester:
L.A = = 19.92 kV (125%) = 24.9 kV
Use: 27 kV, Lightning Arrester, Expulsion Type
Block No: 10
kVANORTH + kVASOUTH
= 46.596 + 49.732= kVA
At 80% Transformer Loading:
kVA
For Transformer Specification:
Use: 125 kVA Distribution Transformer, 19.91kV/240V, 1ph, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)1H+G MECO Incoming
For Fuse Rating:
Where: Vp =19.92 kVPrimary Voltage
Fuse Rating = kVA x 1000
x 300%
1Ф Transformer = 120.41
96.33
Vp x 125%
1Ф Transformer =
19.92185.395
x 300% = 27.92
Primary Voltagex 300%
Vp x 125%
Fuse Rating =
kVA x 1000 Fuse Rating =
1Ф Transformer =
148.32
1Ф Transformer = 185.40
![Page 127: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/127.jpg)
Use: 20 Amps., 19.92kV Fuse Cut-out (Open Type)
For Lightning Arrester:
L.A = = 19.92 kV (125%) = 24.9 kV
Use: 27 kV, Lightning Arrester, Expulsion TypePer Block Transformers Sizing Calculation
Block No: 11
kVANORTH + kVASOUTH
= 46.276 + 56.512= kVA
At 80% Transformer Loading:
kVA
For Transformer Specification:
Use: 167 kVA Distribution Transformer, 19.91kV/240V, 1ph, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)1H+G MECO Incoming
For Fuse Rating:
Where: Vp =19.92 kV
Use: 20 Amps., 19.92kV Fuse Cut-out (Open Type)
For Lightning Arrester:
L.A = = 19.92 kV (125%) = 24.9 kV
Use: 27 kV, Lightning Arrester, Expulsion Type
Block No: 12
kVANORTH + kVASOUTH
= 78.714 + 72.42= kVA
At 80% Transformer Loading:
kVA
For Transformer Specification:
Use: 200 kVA Distribution Transformer, 19.91kV/240V, 1ph, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)1H+G MECO Incoming
1Ф Transformer = 188.92
151.13
1Ф Transformer =
Vp x 125%
x 300% = 19.3519.92
Fuse Rating = kVA x 1000
Primary Voltage
Fuse Rating =128.485
x 300%
1Ф Transformer = 128.49
102.79
Vp x 125%
1Ф Transformer =
Fuse Rating =120.41
x 300% = 18.1319.92
![Page 128: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/128.jpg)
For Fuse Rating:
Where: Vp =19.92 kV
Use: 30 Amps., 19.92kV Fuse Cut-out (Open Type)
For Lightning Arrester:
L.A = = 19.92 kV (125%) = 24.9 kV
Use: 27 kV, Lightning Arrester, Expulsion Type
Vp x 125%
Fuse Rating =188.9175
x 300% = 28.4519.92
x 300%Fuse Rating = kVA x 1000
Primary Voltage
![Page 129: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/129.jpg)
Per Block Transformers Sizing Calculation
Block No: 13
kVANORTH + kVASOUTH
= 67.068 + 66.76= kVA
At 80% Transformer Loading:
kVA
For Transformer Specification:
Use: 200 kVA Distribution Transformer, 19.91kV/240V, 1ph, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)1H+G MECO Incoming
For Fuse Rating:
Where: Vp =19.92 kV
Use: 30 Amps., 19.92kV Fuse Cut-out (Open Type)
For Lightning Arrester:
L.A = = 19.92 kV (125%) = 24.9 kV
Use: 27 kV, Lightning Arrester, Expulsion Type
Block No: 14
kVANORTH + kVASOUTH
= 50.214 + 52.284= kVA
At 80% Transformer Loading:
kVA
For Transformer Specification:
Use: 167 kVA Distribution Transformer, 19.91kV/240V, 1ph, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)1H+G MECO Incoming
For Fuse Rating:
Where: Vp =19.92 kV
Use: 20 Amps., 19.92kV Fuse Cut-out (Open Type)
= 19.3019.92
x 300%
Fuse Rating = kVA x 1000
x 300%Primary Voltage
1Ф Transformer =
1Ф Transformer =
Fuse Rating = kVA x 1000
19.92
Vp x 125%
1Ф Transformer =
133.83
1Ф Transformer = 128.12
x 300%Primary Voltage
Fuse Rating =167.285
x 300% = 25.19
167.29
102.50
Fuse Rating =128.1225
![Page 130: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/130.jpg)
For Lightning Arrester:
L.A = = 19.92 kV (125%) = 24.9 kV
Use: 27 kV, Lightning Arrester, Expulsion TypePer Block Transformers Sizing Calculation
Block No: 15
kVANORTH + kVASOUTH
= 69.752 + 58.412= kVA
kVA
For Transformer Specification:
Use: 167 kVA Distribution Transformer, 19.91kV/240V, 1ph, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)1H+G MECO Incoming
For Fuse Rating:
Where: Vp =19.92 kV
Use: 25 Amps., 19.92kV Fuse Cut-out (Open Type)
For Lightning Arrester:
L.A = = 19.92 kV (125%) = 24.9 kV
Use: 27 kV, Lightning Arrester, Expulsion Type
Block No: 16
kVANORTH + kVASOUTH
= 65.324 + 57.296= kVA
At 80% Transformer Loading:
kVA
For Transformer Specification:
Use: 167 kVA Distribution Transformer, 19.91kV/240V, 1ph, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)1H+G MECO Incoming
For Fuse Rating:
Where: Vp =19.92 kVPrimary Voltage
x 300%Fuse Rating = kVA x 1000
1Ф Transformer = 153.28
122.62
Vp x 125%
1Ф Transformer =
19.92160.205
x 300% = 24.13Fuse Rating =
At 80% Transformer Loading:
Primary Voltagex 300%Fuse Rating =
kVA x 1000
Vp x 125%
1Ф Transformer =
128.16
1Ф Transformer = 160.21
![Page 131: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/131.jpg)
Use: 25 Amps., 19.92kV Fuse Cut-out (Open Type)
For Lightning Arrester:
L.A = = 19.92 kV (125%) = 24.9 kV
Use: 27 kV, Lightning Arrester, Expulsion TypePer Block Transformers Sizing Calculation
Block No: 17
kVANORTH + kVASOUTH
= 50.384 + 51.476= kVA
At 80% Transformer Loading:
kVA
For Transformer Specification:
Use: 167 kVA Distribution Transformer, 19.91kV/240V, 1ph, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)1H+G MECO Incoming
For Fuse Rating:
Where: Vp =19.92 kV
Use: 20 Amps., 19.92kV Fuse Cut-out (Open Type)
For Lightning Arrester:
L.A = = 19.92 kV (125%) = 24.9 kV
Use: 27 kV, Lightning Arrester, Expulsion Type
Block No: 18
kVANORTH + kVASOUTH
= 48.164 + 49.6= kVA
At 80% Transformer Loading:
kVA
For Transformer Specification:
Use: 125 kVA Distribution Transformer, 19.91kV/240V, 1ph, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)1H+G MECO Incoming
1Ф Transformer = 122.21
97.76
1Ф Transformer =
Vp x 125%
Fuse Rating =127.325
x 300% = 19.1819.92
Fuse Rating = kVA x 1000
x 300%Primary Voltage
127.331Ф Transformer =
101.86
Vp x 125%
1Ф Transformer =
Fuse Rating =153.275
x 300% = 23.0819.92
![Page 132: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/132.jpg)
For Fuse Rating:
Where: Vp =19.92 kV
Use: 20 Amps., 19.92kV Fuse Cut-out (Open Type)
For Lightning Arrester:
L.A = = 19.92 kV (125%) = 24.9 kV
Use: 27 kV, Lightning Arrester, Expulsion Type
Vp x 125%
Fuse Rating =122.205
x 300% = 18.4019.92
Fuse Rating = kVA x 1000
x 300%Primary Voltage
![Page 133: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/133.jpg)
Per Block Transformers Sizing Calculation
Block No: 19
kVANORTH + kVASOUTH
= 61.234 + 61.084= kVA
At 80% Transformer Loading:
kVA
For Transformer Specification:
Use: 167 kVA Distribution Transformer, 19.91kV/240V, 1ph, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)1H+G MECO Incoming
For Fuse Rating:
Where: Vp =19.92 kV
Use: 25 Amps., 19.92kV Fuse Cut-out (Open Type)
For Lightning Arrester:
L.A = = 19.92 kV (125%) = 24.9 kV
Use: 27 kV, Lightning Arrester, Expulsion Type
Block No: 20
kVANORTH + kVASOUTH
= 34.878 + 41.082= kVA
At 80% Transformer Loading:
kVA
For Transformer Specification:
Use: 100 kVA Distribution Transformer, 19.91kV/240V, 1ph, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)1H+G MECO Incoming
For Fuse Rating:
Where: Vp =19.92 kV
Use: 15 Amps., 19.92kV Fuse Cut-out (Open Type)
Fuse Rating =94.95
x 300% = 14.3019.92
Fuse Rating = kVA x 1000
x 300%Primary Voltage
= 23.0319.92
Vp x 125%
1Ф Transformer =
x 300%Primary Voltage
Fuse Rating =152.8975
x 300%
1Ф Transformer =
1Ф Transformer = 152.90
Fuse Rating = kVA x 1000
75.96
122.32
1Ф Transformer = 94.95
![Page 134: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/134.jpg)
For Lightning Arrester:
L.A = = 19.92 kV (125%) = 24.9 kV
Use: 27 kV, Lightning Arrester, Expulsion TypePer Block Transformers Sizing Calculation
Block No: 21
kVANORTH + kVASOUTH
= 48.57 + 50.214= kVA
At 80% Transformer Loading:
kVA
For Transformer Specification:
Use: 125 kVA Distribution Transformer, 19.91kV/240V, 1ph, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)1H+G MECO Incoming
For Fuse Rating:
Where: Vp =19.92 kV
Use: 20 Amps., 19.92kV Fuse Cut-out (Open Type)
For Lightning Arrester:
L.A = = 19.92 kV (125%) = 24.9 kV
Use: 27 kV, Lightning Arrester, Expulsion Type
Block No: 22
kVANORTH + kVASOUTH
= 62.68 + 63.208= kVA
At 80% Transformer Loading:
kVA
For Transformer Specification:
Use: 167 kVA Distribution Transformer, 19.91kV/240V, 1ph, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)1H+G MECO Incoming
For Fuse Rating:
Where: Vp =19.92 kV
1Ф Transformer = 157.36
Primary VoltageFuse Rating =
kVA x 1000 x 300%
125.89
Vp x 125%
1Ф Transformer =
19.92123.48
x 300% = 18.60Fuse Rating =
1Ф Transformer = 123.48
Primary VoltageFuse Rating =
kVA x 1000 x 300%
98.78
1Ф Transformer =
Vp x 125%
![Page 135: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/135.jpg)
Use: 25 Amps., 19.92kV Fuse Cut-out (Open Type)
For Lightning Arrester:
L.A = = 19.92 kV (125%) = 24.9 kV
Use: 27 kV, Lightning Arrester, Expulsion TypePer Block Transformers Sizing Calculation
Block No: 23
kVANORTH + kVASOUTH
= 78.272 + 70.772= kVA
At 80% Transformer Loading:
kVA
For Transformer Specification:
Use: 200 kVA Distribution Transformer, 19.91kV/240V, 1ph, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)1H+G MECO Incoming
For Fuse Rating:
Where: Vp =19.92 kV
Use: 30 Amps., 19.92kV Fuse Cut-out (Open Type)
For Lightning Arrester:
L.A = = 19.92 kV (125%) = 24.9 kV
Use: 27 kV, Lightning Arrester, Expulsion Type
Block No: 24
kVANORTH + kVASOUTH
= 45.974 + 51.254= kVA
At 80% Transformer Loading:
kVA
For Transformer Specification:
Use: 125 kVA Distribution Transformer, 19.91kV/240V, 1ph, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)1H+G MECO Incoming
121.541Ф Transformer =
97.23
1Ф Transformer =
Vp x 125%
Fuse Rating =186.305
x 300% = 28.0619.92
kVA x 1000 x 300%
Primary VoltageFuse Rating =
1Ф Transformer = 186.31
149.04
Vp x 125%
1Ф Transformer =
Fuse Rating =157.36
x 300% = 23.7019.92
![Page 136: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/136.jpg)
For Fuse Rating:
Where: Vp =19.92 kV
Use: 20 Amps., 19.92kV Fuse Cut-out (Open Type)
For Lightning Arrester:
L.A = = 19.92 kV (125%) = 24.9 kV
Use: 27 kV, Lightning Arrester, Expulsion Type
Vp x 125%
Fuse Rating =121.535
x 300% = 18.3019.92
Primary VoltageFuse Rating =
kVA x 1000 x 300%
![Page 137: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/137.jpg)
Per Block Transformers Sizing Calculation
Block No: 25
kVANORTH + kVASOUTH
= 61.71 + 61.49= kVA
At 80% Transformer Loading:
kVA
For Transformer Specification:
Use: 167 kVA Distribution Transformer, 19.91kV/240V, 1ph, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)1H+G MECO Incoming
For Fuse Rating:
Where: Vp =19.92 kV
Use: 25 Amps., 19.92kV Fuse Cut-out (Open Type)
For Lightning Arrester:
L.A = = 19.92 kV (125%) = 24.9 kV
Use: 27 kV, Lightning Arrester, Expulsion Type
Block No: 26
kVANORTH + kVASOUTH
= 67.934 + 80.48= kVA
At 80% Transformer Loading:
kVA
For Transformer Specification:
Use: 200 kVA Distribution Transformer, 19.91kV/240V, 1ph, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)1H+G MECO Incoming
For Fuse Rating:
Where: Vp =19.92 kV
Use: 30 Amps., 19.92kV Fuse Cut-out (Open Type)
27.9419.92
=Fuse Rating =185.5175
x 300%
x 300%
= 23.1919.92
Vp x 125%
1Ф Transformer =
123.20
1Ф Transformer = 154.00
x 300%Primary Voltage
Fuse Rating =154
x 300%
1Ф Transformer =
Fuse Rating = kVA x 1000
148.41
1Ф Transformer = 185.52
Fuse Rating = kVA x 1000
Primary Voltage
![Page 138: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/138.jpg)
For Lightning Arrester:
L.A = = 19.92 kV (125%) = 24.9 kV
Use: 27 kV, Lightning Arrester, Expulsion TypePer Block Transformers Sizing Calculation
Block No: 27
kVANORTH + kVASOUTH
= 57.393 + 42.179= kVA
At 80% Transformer Loading:
kVA
For Transformer Specification:
Use: 125 kVA Distribution Transformer, 19.91kV/240V, 1ph, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)1H+G MECO Incoming
For Fuse Rating:
Where: Vp =19.92 kV
Use: 20 Amps., 19.92kV Fuse Cut-out (Open Type)
For Lightning Arrester:
L.A = = 19.92 kV (125%) = 24.9 kV
Use: 27 kV, Lightning Arrester, Expulsion Type
Block No: 28
kVANORTH + kVASOUTH
= 75.502 + 72.818= kVA
At 80% Transformer Loading:
kVA
For Transformer Specification:
Use: 200 kVA Distribution Transformer, 19.91kV/240V, 1ph, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)1H+G MECO Incoming
For Fuse Rating:
Where: Vp =19.92 kV
1Ф Transformer = 185.40
kVA x 1000 x 300%
Primary VoltageFuse Rating =
148.32
Vp x 125%
1Ф Transformer =
124.465x 300% = 18.74
19.92Fuse Rating =
1Ф Transformer = 124.47
kVA x 1000 x 300%
Primary VoltageFuse Rating =
99.57
Vp x 125%
1Ф Transformer =
![Page 139: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/139.jpg)
Use: 30 Amps., 19.92kV Fuse Cut-out (Open Type)
For Lightning Arrester:
L.A = = 19.92 kV (125%) = 24.9 kV
Use: 27 kV, Lightning Arrester, Expulsion TypePer Block Transformers Sizing Calculation
Block No: 29
kVANORTH + kVASOUTH
= 50.63 + 48.902= kVA
For 80% Transformer Loading:
kVA
For Transformer Specification:
Use: 125 kVA Distribution Transformer, 19.91kV/240V, 1ph, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)1H+G MECO Incoming
For Fuse Rating:
Where: Vp =19.92 kV
Use: 20 Amps., 19.92kV Fuse Cut-out (Open Type)
For Lightning Arrester:
L.A = = 19.92 kV (125%) = 24.9 kV
Use: 27 kV, Lightning Arrester, Expulsion Type
Block No: 30
kVANORTH + kVASOUTH
= 54.454 + 44.794= kVA
kVA
For Transformer Specification:
Use: 125 kVA Distribution Transformer, 19.91kV/240V, 1ph, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)1H+G MECO Incoming
1Ф Transformer = 124.06
99.25
1Ф Transformer =
Vp x 125%
Fuse Rating =124.415
x 300% = 18.7419.92
Fuse Rating = kVA x 1000
x 300%Primary Voltage
1Ф Transformer = 124.42
99.53
Vp x 125%
1Ф Transformer =
Fuse Rating =185.4
x 300% = 27.9219.92
![Page 140: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/140.jpg)
For Fuse Rating:
Where: Vp =19.92 kV
Use: 20 Amps., 19.92kV Fuse Cut-out (Open Type)
For Lightning Arrester:
L.A = = 19.92 kV (125%) = 24.9 kV
Use: 27 kV, Lightning Arrester, Expulsion Type
Vp x 125%
Fuse Rating =124.06
x 300% = 18.6819.92
x 300%Primary Voltage
Fuse Rating = kVA x 1000
![Page 141: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/141.jpg)
Calculations for 3Ф Transformers:
Facility Name: SM Department Store - Silang
S = 33.06 kVA
At 80% Transformer Loading:S ÷ 80% = 33.06 ÷ 0.8 = 41.33 kVA
For Transformer Specification:Use: 45 kVA, 3Ф, 34.5kV/400,Y230V, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)3H+G MECO Incoming
Secondary Wire Size:I = (S x 1000 x 1.25) ÷ (System Voltage x √3)
59.65 = (33.06 x 1000 x 1.25)÷400√3 = 59.65 AUse: Copper Conductor, 3H+G
Lightning Arrester:L.A. = Vp x 125%
= 34.5kV x 1.25= 43.13 A
Use: 48 kV Lightning Arrester (Expulsion Type)
Fuse Rating:Fuse = (S ÷ (Vp x√3)) x 300%
= (33.06 ÷ (34.5 x √3)) x 300%= 1.66 A
Use: 15 Amps., 19.92kV Fuse Cut-out (Open Type)
Facility Name: Cleanway Technology Corp.
S = 425 kVA
At 80% Transformer Loading:S ÷ 80% = 425 ÷ 0.8 = 531.25 kVA
For Transformer Specification:Use: 750 kVA, 3Ф, 34.5kV/400,Y230V, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)3H+G MECO Incoming
Secondary Wire Size:I = (S x 1000 x 1.25) ÷ (System Voltage x √3)
766.82 = (425 x 1000 x 1.25) ÷ 400√3 = 766.82 AUse: 3-No. 500 MCM + 1/0 AWG (G) Copper Conductor, 3H+G
Lightning Arrester:L.A. = Vp x 125%
= 34.5kV x 1.25= 43.13 A
Use: 48 kV Lightning Arrester (Expulsion Type)
Fuse Rating:Fuse = (S ÷ (Vp x√3)) x 300%
= (425 ÷ (34.5 x √3)) x 300%= 21.34 A
Use: 25 Amps., 19.92kV Fuse Cut-out (Open Type)Calculations for 3Ф Transformers:
3Ф Transformer =
3Ф Transformer =
3-No. 8 AWG + 8 AWG (G)
![Page 142: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/142.jpg)
Facility Name: Hypermarket
S = 47.22 kVA
At 80% Transformer Loading:S ÷ 80% = 47.22 ÷ 0.8 = 59.03 kVA
For Transformer Specification:Use: 75 kVA, 3Ф, 34.5kV/400,Y230V, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)3H+G MECO Incoming
Secondary Wire Size:I = (S x 1000 x 1.25) ÷ (System Voltage x √3)
85.2 = (47.22 x 1000 x 1.25) ÷ 400√3 = 85.20 AUse: 3-No. 8 AWG + 8AWG (G) Copper Conductor, 3H+G
Lightning Arrester:L.A. = Vp x 125%
= 34.5kV x 1.25= 43.13 A
Use: 48 kV Lightning Arrester (Expulsion Type)
Fuse Rating:Fuse = (S ÷ (Vp x√3)) x 300%
= (47.22 ÷ (34.5 x √3)) x 300%= 2.37 A
Use: 15 Amps., 19.92kV Fuse Cut-out (Open Type)
Facility Name: Waltermart
S = 47.2 kVA
At 80% Transformer Loading:S ÷ 80% = 47.22 ÷ 0.8 = 59.03 kVA
For Transformer Specification:Use: 75 kVA, 3Ф, 34.5kV/400,Y230V, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)3H+G MECO Incoming
Secondary Wire Size:I = (S x 1000 x 1.25) ÷ (System Voltage x √3)
85.2 = (47.22 x 1000 x 1.25) ÷ 400√3 = 85.20 AUse: 3-No. 8 AWG + 8AWG (G) Copper Conductor, 3H+G
Lightning Arrester:L.A. = Vp x 125%
= 34.5kV x 1.25= 43.13 A
Use: 48 kV Lightning Arrester (Expulsion Type)
Fuse Rating:Fuse = (S ÷ (Vp x√3)) x 300%
= (47.22 ÷ (34.5 x √3)) x 300%= 2.37 A
Use: 15 Amps., 19.92kV Fuse Cut-out (Open Type)
3Ф Transformer =
3Ф Transformer =
![Page 143: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/143.jpg)
Calculations for 3Ф Transformers:
Facility Name: FEU Silang-Cavite
S = 47.2 kVA
At 80% Transformer Loading:S ÷ 80% = 47.22 ÷ 0.8 = 59.03 kVA
For Transformer Specification:Use: 75 kVA, 3Ф, 34.5kV/400,Y230V, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)3H+G MECO Incoming
Secondary Wire Size:I = (S x 1000 x 1.25) ÷ (System Voltage x √3)
85.2 = (47.22 x 1000 x 1.25) ÷ 400√3 = 85.20 AUse: 3-No. 8 AWG + 8AWG (G) Copper Conductor, 3H+G
Lightning Arrester:L.A. = Vp x 125%
= 34.5kV x 1.25= 43.13 A
Use: 48 kV Lightning Arrester (Expulsion Type)
Fuse Rating:Fuse = (S ÷ (Vp x√3)) x 300%
= (47.22 ÷ (34.5 x √3)) x 300%= 2.37 A
Use: 15 Amps., 19.92kV Fuse Cut-out (Open Type)
Facility Name: Cavite State University
S = 47.2 kVA
At 80% Transformer Loading:S ÷ 80% = 47.22 ÷ 0.8 = 59.03 kVA
For Transformer Specification:Use: 75 kVA, 3Ф, 34.5kV/400,Y230V, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)3H+G MECO Incoming
Secondary Wire Size:I = (S x 1000 x 1.25) ÷ (System Voltage x √3)
85.2 = (47.22 x 1000 x 1.25) ÷ 400√3 = 85.20 AUse: 3-No. 8 AWG + 8AWG (G) Copper Conductor, 3H+G
Lightning Arrester:L.A. = Vp x 125%
= 34.5kV x 1.25= 43.13 A
Use: 48 kV Lightning Arrester (Expulsion Type)
Fuse Rating:Fuse = (S ÷ (Vp x√3)) x 300%
= (47.22 ÷ (34.5 x √3)) x 300%= 2.37 A
Use: 15 Amps., 19.92kV Fuse Cut-out (Open Type)
3Ф Transformer =
3Ф Transformer =
![Page 144: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/144.jpg)
Calculations for 3Ф Transformers:
Facility Name: Silang Municipal Hall
S = 47.22 kVA
At 80% Transformer Loading:S ÷ 80% = 47.22 ÷ 0.8 = 59.03 kVA
For Transformer Specification:Use: 75 kVA, 3Ф, 34.5kV/400,Y230V, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)3H+G MECO Incoming
Secondary Wire Size:I = (S x 1000 x 1.25) ÷ (System Voltage x √3)
85.2 = (47.22 x 1000 x 1.25) ÷ 400√3 = 85.20 AUse: 3-No. 8 AWG + 8AWG (G) Copper Conductor, 3H+G
Lightning Arrester:L.A. = Vp x 125%
= 34.5kV x 1.25= 43.13 A
Use: 48 kV Lightning Arrester (Expulsion Type)
Fuse Rating:Fuse = (S ÷ (Vp x√3)) x 300%
= (47.22 ÷ (34.5 x √3)) x 300%= 2.37 A
Use: 15 Amps., 19.92kV Fuse Cut-out (Open Type)
Facility Name: Philippine Oasis Hotel & Resort
S = 283.3 kVA
At 80% Transformer Loading:S ÷ 80% = 283.33 ÷ 0.8 = 354.16 kVA
For Transformer Specification:Use: 500 kVA, 3Ф, 34.5kV/400,Y230V, 60HzOil - Immersed Self Cooled Transformer (Pad Mounted)3H+G MECO Incoming
Secondary Wire Size:I = (S x 1000 x 1.25) ÷ (System Voltage x √3)
511.2 = (283.33 x 1000 x 1.25) ÷ 400√3 = 511.20 AUse: 3-No. 250 MCM + 2 AWG (G) Copper Conductor, 3H+G
Lightning Arrester:L.A. = Vp x 125%
= 34.5kV x 1.25= 43.13 A
Use: 48 kV Lightning Arrester (Expulsion Type)
Fuse Rating:Fuse = (S ÷ (Vp x√3)) x 300%
= (283.33 ÷ (34.5 x √3)) x 300%= 14.22 A
3Ф Transformer =
3Ф Transformer =
![Page 145: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/145.jpg)
Use: 15 Amps., 19.92kV Fuse Cut-out (Open Type)Calculations for 3Ф Transformers:
Facility Name: The Hills Condotel
S = 188.9 kVA
At 80% Transformer Loading:S ÷ 80% = 188.89 ÷ 0.8 = 236.11 kVA
For Transformer Specification:Use: 300 kVA, 3Ф, 34.5kV/400,Y230V, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)3H+G MECO Incoming
Secondary Wire Size:I = (S x 1000 x 1.25) ÷ (System Voltage x √3)
340.81 = (188.89 x 1000 x 1.25) ÷ 400√3 = 340.81 AUse: 3-No. 2/0 AWG + 4 AWG (G) Copper Conductor, 3H+G
Lightning Arrester:L.A. = Vp x 125%
= 34.5kV x 1.25= 43.13 A
Use: 48 kV Lightning Arrester (Expulsion Type)
Fuse Rating:Fuse = (S ÷ (Vp x√3)) x 300%
= (188.89 ÷ (34.5 x √3)) x 300%= 9.48 A
Use: 15 Amps., 19.92kV Fuse Cut-out (Open Type)
Facility Name: Renz Villa Hotel
S = 188.9 kVA
At 80% Transformer Loading:S ÷ 80% = 188.89 ÷ 0.8 = 236.11 kVA
For Transformer Specification:Use: 300 kVA, 3Ф, 34.5kV/400,Y230V, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)3H+G MECO Incoming
Secondary Wire Size:I = (S x 1000 x 1.25) ÷ (System Voltage x √3)
340.81 = (188.89 x 1000 x 1.25) ÷ 400√3 = 340.81 AUse: 3-No. 2/0 AWG + 4 AWG (G) Copper Conductor, 3H+G
Lightning Arrester:L.A. = Vp x 125%
= 34.5kV x 1.25= 43.13 A
Use: 48 kV Lightning Arrester (Expulsion Type)
Fuse Rating:Fuse = (S ÷ (Vp x√3)) x 300%
= (188.89 ÷ (34.5 x √3)) x 300%
3Ф Transformer =
3Ф Transformer =
![Page 146: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/146.jpg)
= 9.48 AUse: 15 Amps., 19.92kV Fuse Cut-out (Open Type)
![Page 147: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/147.jpg)
Calculations for 3Ф Transformers:
Facility Name: D-Zone Backpackers Inn
S = 94.44 kVA
At 80% Transformer Loading:S ÷ 80% = 94.44 ÷ 0.8 = 118.05 kVA
For Transformer Specification:Use: 150 kVA, 3Ф, 34.5kV/400,Y230V, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)3H+G MECO Incoming
Secondary Wire Size:I = (S x 1000 x 1.25) ÷ (System Voltage x √3)
170.4 = (94.44 x 1000 x 1.25) ÷ 400√3 = 170.40 AUse: 3-No. 4 AWG + 8 AWG (G) Copper Conductor, 3H+G
Lightning Arrester:L.A. = Vp x 125%
= 34.5kV x 1.25= 43.13 A
Use: 48 kV Lightning Arrester (Expulsion Type)
Fuse Rating:Fuse = (S ÷ (Vp x√3)) x 300%
= (94.44 ÷ (34.5 x √3)) x 300%= 4.74 A
Use: 15 Amps., 19.92kV Fuse Cut-out (Open Type)
Facility Name: Estrella Hospital
S = 283.3 kVA
At 80% Transformer Loading:S ÷ 80% = 283.33 ÷ 0.8 = 354.16 kVA
For Transformer Specification:Use: 500 kVA, 3Ф, 34.5kV/400,Y230V, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)3H+G MECO Incoming
Secondary Wire Size:I = (S x 1000 x 1.25) ÷ (System Voltage x √3)
511.2 = (283.33 x 1000 x 1.25) ÷ 400√3 = 511.20 AUse: 3-No. 250 MCM + 2 AWG (G) Copper Conductor, 3H+G
Lightning Arrester:L.A. = Vp x 125%
= 34.5kV x 1.25= 43.13 A
Use: 48 kV Lightning Arrester (Expulsion Type)
Fuse Rating:Fuse = (S ÷ (Vp x√3)) x 300%
= (283.33 ÷ (34.5 x √3)) x 300%= 14.22 A
Use: 15 Amps., 19.92kV Fuse Cut-out (Open Type)Calculations for 3Ф Transformers:
3Ф Transformer =
3Ф Transformer =
![Page 148: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/148.jpg)
Facility Name: Silang General Hospital
S = 283.33 kVA
At 80% Transformer Loading:S ÷ 80% = 283.33 ÷ 0.8 = 354.16 kVA
For Transformer Specification:Use: 500 kVA, 3Ф, 34.5kV/400,Y230V, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)3H+G MECO Incoming
Secondary Wire Size:I = (S x 1000 x 1.25) ÷ (System Voltage x √3)
511.2 = (283.33 x 1000 x 1.25) ÷ 400√3 = 511.20 AUse: 3-No. 250 MCM + 2 AWG (G) Copper Conductor, 3H+G
Lightning Arrester:L.A. = Vp x 125%
= 34.5kV x 1.25= 43.13 A
Use: 48 kV Lightning Arrester (Expulsion Type)
Fuse Rating:Fuse = (S ÷ (Vp x√3)) x 300%
= (283.33 ÷ (34.5 x √3)) x 300%= 14.22 A
Use: 15 Amps., 19.92kV Fuse Cut-out (Open Type)
Facility Name: Velasco Hospital
S = 283.33 kVA
At 80% Transformer Loading:S ÷ 80% = 283.33 ÷ 0.8 = 354.16 kVA
For Transformer Specification:Use: 500 kVA, 3Ф, 34.5kV/400,Y230V, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)3H+G MECO Incoming
Secondary Wire Size:I = (S x 1000 x 1.25) ÷ (System Voltage x √3)
511.2 = (283.33 x 1000 x 1.25) ÷ 400√3 = 511.20 AUse: 3-No. 250 MCM + 2 AWG (G) Copper Conductor, 3H+G
Lightning Arrester:L.A. = Vp x 125%
= 34.5kV x 1.25= 43.13 A
Use: 48 kV Lightning Arrester (Expulsion Type)
Fuse Rating:Fuse = (S ÷ (Vp x√3)) x 300%
= (283.33 ÷ (34.5 x √3)) x 300%= 14.22 A
Use: 15 Amps., 19.92kV Fuse Cut-out (Open Type)
3Ф Transformer =
3Ф Transformer =
![Page 149: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/149.jpg)
Calculations for 3Ф Transformers:
Facility Name: La Freva Hotel
S = 236.1 kVA
At 80% Transformer Loading:S ÷ 80% = 236.11 ÷ 0.8 = 295.14 kVA
For Transformer Specification:Use: 300 kVA, 3Ф, 34.5kV/400,Y230V, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)3H+G MECO Incoming
Secondary Wire Size:I = (S x 1000 x 1.25) ÷ (System Voltage x √3)
426.01 = (236.11 x 1000 x 1.25) ÷ 400√3 = 426.01 AUse: 3-No. 4/0 AWG + 2 AWG (G) Copper Conductor, 3H+G
Lightning Arrester:L.A. = Vp x 125%
= 34.5kV x 1.25= 43.13 A
Use: 48 kV Lightning Arrester (Expulsion Type)
Fuse Rating:Fuse = (S ÷ (Vp x√3)) x 300%
= (236.11 ÷ (34.5 x √3)) x 300%= 11.85 A
Use: 15 Amps., 19.92kV Fuse Cut-out (Open Type)
Facility Name: Green Papaya Hotel
S = 236.1 kVA
At 80% Transformer Loading:S ÷ 80% = 236.11 ÷ 0.8 = 295.14 kVA
For Transformer Specification:Use: 300 kVA, 3Ф, 34.5kV/400,Y230V, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)3H+G MECO Incoming
Secondary Wire Size:I = (S x 1000 x 1.25) ÷ (System Voltage x √3)
426.01 = (236.11 x 1000 x 1.25) ÷ 400√3 = 426.01 AUse: 3-No. 4/0 AWG + 2 AWG (G) Copper Conductor, 3H+G
Lightning Arrester:L.A. = Vp x 125%
= 34.5kV x 1.25= 43.13 A
Use: 48 kV Lightning Arrester (Expulsion Type)
Fuse Rating:Fuse = (S ÷ (Vp x√3)) x 300%
= (236.11 ÷ (34.5 x √3)) x 300%= 11.85 A
Use: 15 Amps., 19.92kV Fuse Cut-out (Open Type)
3Ф Transformer =
3Ф Transformer =
![Page 150: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/150.jpg)
Calculations for 3Ф Transformers:
Facility Name: The Theodore Hotel
S = 236.1 kVA
At 80% Transformer Loading:S ÷ 80% = 236.11 ÷ 0.8 = 295.14 kVA
For Transformer Specification:Use: 300 kVA, 3Ф, 34.5kV/400,Y230V, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)3H+G MECO Incoming
Secondary Wire Size:I = (S x 1000 x 1.25) ÷ (System Voltage x √3)
426.01 = (236.11 x 1000 x 1.25) ÷ 400√3 = 426.01 AUse: 3-No. 4/0 AWG + 2 AWG (G) Copper Conductor, 3H+G
Lightning Arrester:L.A. = Vp x 125%
= 34.5kV x 1.25= 43.13 A
Use: 48 kV Lightning Arrester (Expulsion Type)
Fuse Rating:Fuse = (S ÷ (Vp x√3)) x 300%
= (236.11 ÷ (34.5 x √3)) x 300%= 11.85 A
Use: 15 Amps., 19.92kV Fuse Cut-out (Open Type)
Facility Name: Microtel Inn and Suites Eagle-Ridges
S = 94.4 kVA
At 80% Transformer Loading:S ÷ 80% = 94.44 ÷ 0.8 = 118.05 kVA
For Transformer Specification:Use: 150 kVA, 3Ф, 34.5kV/400,Y230V, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)3H+G MECO Incoming
Secondary Wire Size:I = (S x 1000 x 1.25) ÷ (System Voltage x √3)
170.4 = (94.44 x 1000 x 1.25) ÷ 400√3 = 170.40 AUse: 3-No. 4 AWG + 8 AWG (G) Copper Conductor, 3H+G
Lightning Arrester:L.A. = Vp x 125%
= 34.5kV x 1.25= 43.13 A
Use: 48 kV Lightning Arrester (Expulsion Type)
Fuse Rating:Fuse = (S ÷ (Vp x√3)) x 300%
= (94.44 ÷ (34.5 x √3)) x 300%= 4.74 A
3Ф Transformer =
3Ф Transformer =
![Page 151: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/151.jpg)
Use: 15 Amps., 19.92kV Fuse Cut-out (Open Type)Calculations for 3Ф Transformers:
Facility Name: Tagaytay Heaven Hotel
S = 236.1 kVA
At 80% Transformer Loading:S ÷ 80% = 236.11 ÷ 0.8 = 295.14 kVA
For Transformer Specification:Use: 300 kVA, 3Ф, 34.5kV/400,Y230V, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)3H+G MECO Incoming
Secondary Wire Size:I = (S x 1000 x 1.25) ÷ (System Voltage x √3)
426.01 = (236.11 x 1000 x 1.25) ÷ 400√3 = 426.01 AUse: 3-No. 4/0 AWG + 2 AWG (G) Copper Conductor, 3H+G
Lightning Arrester:L.A. = Vp x 125%
= 34.5kV x 1.25= 43.13 A
Use: 48 kV Lightning Arrester (Expulsion Type)
Fuse Rating:Fuse = (S ÷ (Vp x√3)) x 300%
= (236.11 ÷ (34.5 x √3)) x 300%= 11.85 A
Use: 15 Amps., 19.92kV Fuse Cut-out (Open Type)
Facility Name: TRI-R ALLIED INDUSTRIAL INC
S = 425 kVA
At 80% Transformer Loading:S ÷ 80% = 425 ÷ 0.8 = 531.25 kVA
For Transformer Specification:Use: 750 kVA, 3Ф, 34.5kV/400,Y230V, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)3H+G MECO Incoming
Secondary Wire Size:I = (S x 1000 x 1.25) ÷ (System Voltage x √3)
766.82 = (425 x 1000 x 1.25) ÷ 400√3 = 766.82 AUse: 3-No. 500 MCM + 1/0 AWG (G) Copper Conductor, 3H+G
Lightning Arrester:L.A. = Vp x 125%
= 34.5kV x 1.25= 43.13 A
Use: 48 kV Lightning Arrester (Expulsion Type)
Fuse Rating:Fuse = (S ÷ (Vp x√3)) x 300%
= (425 ÷ (34.5 x √3)) x 300%
3Ф Transformer =
3Ф Transformer =
![Page 152: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/152.jpg)
= 21.34 AUse: 25 Amps., 19.92kV Fuse Cut-out (Open Type)
![Page 153: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/153.jpg)
Calculations for 3Ф Transformers:
Facility Name: Sustamina Dressing Plant
S = 377.8 kVA
At 80% Transformer Loading:S ÷ 80% = 377.78 ÷ 0.8 = 472.23 kVA
For Transformer Specification:Use: 500 kVA, 3Ф, 34.5kV/400,Y230V, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)3H+G MECO Incoming
Secondary Wire Size:I = (S x 1000 x 1.25) ÷ (System Voltage x √3)
681.62 = (377.78 x 1000 x 1.25) ÷ 400√3 = 681.62 AUse: 3-No. 400 MCM + 2 AWG (G) Copper Conductor, 3H+G
Lightning Arrester:L.A. = Vp x 125%
= 34.5kV x 1.25= 43.13 A
Use: 48 kV Lightning Arrester (Expulsion Type)
Fuse Rating:Fuse = (S ÷ (Vp x√3)) x 300%
= (377.78 ÷ (34.5 x √3)) x 300%= 18.97 A
Use: 20 Amps., 19.92kV Fuse Cut-out (Open Type)
Facility Name: Eurotiles
S = 330.6 kVA
At 80% Transformer Loading:S ÷ 80% = 330.56 ÷ 0.8 = 413.20 kVA
For Transformer Specification:Use: 500 kVA, 3Ф, 34.5kV/400,Y230V, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)3H+G MECO Incoming
Secondary Wire Size:I = (S x 1000 x 1.25) ÷ (System Voltage x √3)
596.42 = (330.56 x 1000 x 1.25) ÷ 400√3 = 596.42 AUse: 3-No. 300 MCM + 2 AWG (G) Copper Conductor, 3H+G
Lightning Arrester:L.A. = Vp x 125%
= 34.5kV x 1.25= 43.13 A
Use: 48 kV Lightning Arrester (Expulsion Type)
Fuse Rating:Fuse = (S ÷ (Vp x√3)) x 300%
= (330.56 ÷ (34.5 x √3)) x 300%= 16.60 A
Use: 20 Amps., 19.92kV Fuse Cut-out (Open Type)Calculations for 3Ф Transformers:
3Ф Transformer =
3Ф Transformer =
![Page 154: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/154.jpg)
Facility Name: Cavite Techno Industrial Supply
S = 377.8 kVA
At 80% Transformer Loading:S ÷ 80% = 377.78 ÷ 0.8 = 472.23 kVA
For Transformer Specification:Use: 500 kVA, 3Ф, 34.5kV/400,Y230V, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)3H+G MECO Incoming
Secondary Wire Size:I = (S x 1000 x 1.25) ÷ (System Voltage x √3)
1185.42 = (377.78 x 1000 x 1.25) ÷ 400√3 = 681.62 AUse: 2 SETS OF 3-No. 300 MCM + 2/0 AWG (G) Copper Conductor, 3H+G
Lightning Arrester:L.A. = Vp x 125%
= 34.5kV x 1.25= 43.13 A
Use: 48 kV Lightning Arrester (Expulsion Type)
Fuse Rating:Fuse = (S ÷ (Vp x√3)) x 300%
= (377.78 ÷ (34.5 x √3)) x 300%= 18.97 A
Use: 20 Amps., 19.92kV Fuse Cut-out (Open Type)
Facility Name: NAV Trading Corporation
S = 377.8 kVA
At 80% Transformer Loading:S ÷ 80% = 377.78 ÷ 0.8 = 472.23 kVA
For Transformer Specification:Use: 500 kVA, 3Ф, 34.5kV/400,Y230V, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)3H+G MECO Incoming
Secondary Wire Size:I = (S x 1000 x 1.25) ÷ (System Voltage x √3)
681.62 = (377.78 x 1000 x 1.25) ÷ 400√3 = 681.62 AUse: 3-No. 400 MCM + 2 AWG (G) Copper Conductor, 3H+G
Lightning Arrester:L.A. = Vp x 125%
= 34.5kV x 1.25= 43.13 A
Use: 48 kV Lightning Arrester (Expulsion Type)
Fuse Rating:Fuse = (S ÷ (Vp x√3)) x 300%
= (377.78 ÷ (34.5 x √3)) x 300%= 18.97 A
Use: 20 Amps., 19.92kV Fuse Cut-out (Open Type)
3Ф Transformer =
3Ф Transformer =
![Page 155: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/155.jpg)
Calculations for 3Ф Transformers:
Facility Name: RS-Unitech Manufacturing & Trading
S = 425 kVA
At 80% Transformer Loading:S ÷ 80% = 425 ÷ 0.8 = 531.25 kVA
For Transformer Specification:Use: 750 kVA, 3Ф, 34.5kV/400,Y230V, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)3H+G MECO Incoming
Secondary Wire Size:I = (S x 1000 x 1.25) ÷ (System Voltage x √3)
766.82 = (425 x 1000 x 1.25) ÷ 400√3 = 766.82 AUse: 3-No. 500 MCM + 1/0 AWG (G) Copper Conductor, 3H+G
Lightning Arrester:L.A. = Vp x 125%
= 34.5kV x 1.25= 43.13 A
Use: 48 kV Lightning Arrester (Expulsion Type)
Fuse Rating:Fuse = (S ÷ (Vp x√3)) x 300%
= (425 ÷ (34.5 x √3)) x 300%= 21.34 A
Use: 25 Amps., 19.92kV Fuse Cut-out (Open Type)
Facility Name: Cleanway Technology Corp.
S = 425 kVA
At 80% Transformer Loading:S ÷ 80% = 425 ÷ 0.8 = 531.25 kVA
For Transformer Specification:Use: 750 kVA, 3Ф, 34.5kV/400,Y230V, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)3H+G MECO Incoming
Secondary Wire Size:I = (S x 1000 x 1.25) ÷ (System Voltage x √3)
766.82 = (425 x 1000 x 1.25) ÷ 400√3 = 766.82 AUse: 3-No. 500 MCM + 1/0 AWG (G) Copper Conductor, 3H+G
Lightning Arrester:L.A. = Vp x 125%
= 34.5kV x 1.25= 43.13 A
Use: 48 kV Lightning Arrester (Expulsion Type)
Fuse Rating:Fuse = (S ÷ (Vp x√3)) x 300%
= (425 ÷ (34.5 x √3)) x 300%= 21.34 A
Use: 25 Amps., 19.92kV Fuse Cut-out (Open Type)
3Ф Transformer =
3Ф Transformer =
![Page 156: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/156.jpg)
Calculations for 3Ф Transformers:
Facility Name: Cavite Techno Industry
S = 377.8 kVA
At 80% Transformer Loading:S ÷ 80% = 377.8 ÷ 0.8 = 472.25 kVA
For Transformer Specification:Use: 500 kVA, 3Ф, 34.5kV/400,Y230V, 60HzOil - Immersed Self Cooled Transformer (pole Mounted)3H+G MECO Incoming
Secondary Wire Size:I = (S x 1000 x 1.25) ÷ (System Voltage x √3)
681.65 = (377.8 x 1000 x 1.25) ÷ 400√3 = 681.65 AUse: 3-No. 400 MCM + 2 AWG (G) Copper Conductor, 3H+G
Lightning Arrester:L.A. = Vp x 125%
= 34.5kV x 1.25= 43.13 A
Use: 48 kV Lightning Arrester (Expulsion Type)
Fuse Rating:Fuse = (S ÷ (Vp x√3)) x 300%
= (377.8 ÷ (34.5 x √3)) x 300%= 18.97 A
Use: 20 Amps., 19.92kV Fuse Cut-out (Open Type)
3Ф Transformer =
![Page 157: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/157.jpg)
![Page 158: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/158.jpg)
![Page 159: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/159.jpg)
![Page 160: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/160.jpg)
![Page 161: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/161.jpg)
![Page 162: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/162.jpg)
![Page 163: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/163.jpg)
![Page 164: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/164.jpg)
BLOCK NO. RESIDENTIAL COMMERCIAL INDUSTRIAL TOTAL kVA
1 68.16 66.116 0 134.28
2 102.32 184.16 0 286.48
3 116.77 75.55 0 192.32
4 91.77 28.33 425 545.10
5 109.57 37.774 377.78 525.12
6 92.87 28.33 377.78 498.98
7 48.34 240.84 0 289.18
8 116.81 221.95 0 338.76
9 115.26 269.17 0 384.43
10 63.27 33.06 0 96.33
11 69.73 127.5 0 197.23
12 89.75 108.606 0 198.35
13 100.77 80.28 0 181.05
14 74.17 28.33 377.78 480.28
15 95.10 33.06 377.78 505.94
16 89.56 33.06 425 547.62
17 68.80 269.17 0 337.97
18 64.70 269.17 0 333.87
19 93.99 264.44 0 358.43
20 47.63 28.33 0 75.96
21 70.45 75.55 0 146.00
22 97.56 28.33 0 125.89
23 120.71 28.33 0 149.04
24 68.90 311.66 0 380.56
25 104.31 18.89 425 548.20
26 115.36 316.386 0 431.74
27 71.24 311.664 0 382.90
28 129.44 302.21 0 431.65
29 94.81 38.45 330.56 463.82
30 70.92 75.55 0 146.47
SUMMARY OF LOADS
![Page 165: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/165.jpg)
TOTAL kVA 2663.02 3934.25 3116.68 9713.95
![Page 166: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/166.jpg)
AB BC CA 3Ф AB BC CA 3Ф AB BC CA 3Ф
1 101.22 33.06 11 102.79 94.44 21 98.78 47.22
2 121.21 165.27 12 151.13 47.22 22 125.89
3 145.10 47.22 13 133.83 47.22 23 149.04
4 120.10 425 14 102.50 377.78 24 97.23 283.33
5 147.34 377.78 15 128.16 377.78 25 123.20 425
6 121.20 377.78 16 122.62 425 26 148.41 283.33
7 100.29 188.89 17 101.86 236.11 27 99.57 283.33
8 149.87 188.89 18 97.76 236.11 28 148.32 283.33
9 148.32 236.11 19 122.32 236.11 29 99.53 364.29
10 96.33 20 75.96 30 99.25 47.22
Sum 417.934 418.416 414.614 2040 Sum 383.106 377.062 378.766 2077.77 Sum 394.83 397.41 396.99 2017.05
Total Total Total
9713.95
FEEDER LOAD BALANCING
Total Load kVA =
3290.964 3216.704 3206.28
PHASEBLOCK
PHASE PHASEBLOCK BLOCK
![Page 167: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/167.jpg)
134.28 197.23 146.00
286.48 198.35 125.89
192.32 181.05 149.04
545.10 480.28 380.56
525.12 505.94 548.20
498.98 547.62 431.74
289.18 337.97 382.90
338.76 333.87 431.65
384.43 358.43 463.82
96.33 75.96 146.47
3290.96 3216.70 3206.28
![Page 168: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/168.jpg)
Computation of Distance:
Division # of Poles Po-Po Distance
SS - AB 29 150 4350 ft
A-C 18 150 2700 ft
A-D 31 150 4650 ft
B-E 44 150 6600 ft
B-F 11 150 1650 ft
F-G 22 150 3300 ft
F-H 10 150 1500 ft
Total = 24750
Allowable Voltage Drop per 1000ft:
Allowable VD = (1725 x 1000) ÷ 24750
= 69.70 V
Voltage Drop per Division:
Division Distance VD Vdc
SS - AB 4350 69.70 303.20 V
A-C 2700 69.70 188.19 V
A-D 4650 69.70 324.11 V
B-E 6600 69.70 460.02 V
B-F 1650 69.70 115.01 V
F-G 3300 69.70 230.01 V
F-H 1500 69.70 104.55 V
Total = 1725 V
Reference TCL (kVA) I CM DcVd e Vac
SS - AB 512.06 8.57 16510 54.19 40.1 45.99
A-C 262.87 4.40 16510 27.82 13 23.6103
A-D 737.41 12.34 16510 83.41 62 70.7884
B-E 935.50 15.66 16510 150.24 111 127.506
B-F 338.76 5.67 16510 13.60 10 11.542
F-G 384.43 6.43 16510 30.85 23 26.1818
F-H 96.33 1.61 16510 3.51 2.598 2.97887
TOTAL 3267.35 54.68 363.62 261.27 308.60
FEEDER 1: SUMMARY OF VALUES
DESIGN OF PRIMARY DISTRIBUTION SYSTEM FEEDER 1
![Page 169: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/169.jpg)
SS - AB
Total kVA = 512.06 kVA
Total Current Computation:
INORTH = (Total kVA) ÷ (System Voltage x √3)
= (512.058) ÷ (34.5kV x √3)
= 8.57 A
Circular Mill Computation:
CM = (24 x D x I) ÷ Vdc
= (24 x 4350 x 8.57) ÷ 303.20
= 2951 CM ≈ 16510 CM
Based on Table For Circular Mill:
Use: No. 8 AWG Copper Conductor, 2-Wires
16510 1 Strand Hard Drawn Copper Conductor
16510 CMILS @ 3ft. Spacing Between Conductor
Actual Voltage Drop:
VDc Actual = (24 x D x I) ÷ CM)
= (24 x 4350 x 8.57) ÷16510
= 54.19 V
(For 3 ft. Spacing Between Three 16510 CM Wires:)
Based on Table
Ra = 3.79 Ω/mile
Xa = 0.665 Ω/mile
Xd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile
= 0.133 Ω/mile
Xt = Xa + Xd = 0.4127 Ω/mile
Reactance and Resistance Ratio (Xt/Ra):
Ratio= Xt ÷ Ra
= 0.412707678568674 ÷ 3.79
= 0.109
Based on Table : AC DROP FACTOR @ 85% = 0.98
Vac SS - A = 0.866 x Vdc actual x AC Drop Factor
= 0.866 x 54.19 x 0.98
= 45.99 V
Approximate Method:
e = [√3 x D x I x (RacosӨ +XtsinӨ)] ÷ 5280
= [√3 x 4350 x 8.57 x (cos31.79 + 0.108893846588041sin31.79)] ÷ 5280
= 40.1 V
![Page 170: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/170.jpg)
A - C
Total kVA = 262.87 kVA
Total Current Computation:
INORTH = (Total kVA) ÷ (System Voltage x √3)
= (262.868) ÷ (34.5kV x √3)
= 4.40 A
Circular Mill Computation:
CM = (24 x D x I) ÷ Vdc
= (24 x 2700 x 4.40) ÷ 188.19
= 1515 CM ≈ 16510 CM
Based on Table For Circular Mill:
Use: No. 8 AWG Copper Conductor, 2-Wires
16510 1 Strand Hard Drawn Copper Conductor
16510 CMILS @ 3ft. Spacing Between Conductor
Actual Voltage Drop:
VDc Actual = (24 x D x I) ÷ CM)
= (24 x 2700 x 4.40) ÷16510
= 27.82 V
(For 3 ft. Spacing Between Three 16510 CM Wires:)
Based on Table
Ra = 3.79 Ω/mile
Xa = 0.665 Ω/mile
Xd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile
= 0.133 Ω/mile
Xt = Xa + Xd = 0.4127 Ω/mile
Reactance and Resistance Ratio (Xt/Ra):
Ratio= Xt ÷ Ra
= 0.412707678568674 ÷ 3.79
= 0.109
Based on Table : AC DROP FACTOR @ 85% = 0.98
Vac SS - A = 0.866 x Vdc actual x AC Drop Factor
= 0.866 x 27.82 x 0.98
= 23.61 V
Approximate Method:
e = [√3 x D x I x (RacosӨ +XtsinӨ)] ÷ 5280
= [√3 x 2700 x 4.40 x (3.79cos31.79 + 0.108893846588041sin31.79)] ÷ 5280
= 12.78 V
![Page 171: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/171.jpg)
A - D
Total kVA = 737.41 kVA
Total Current Computation:
INORTH = (Total kVA) ÷ (System Voltage x √3)
= (737.414) ÷ (34.5kV x √3)
= 12.34 A
Circular Mill Computation:
CM = (24 x D x I) ÷ Vdc
= (24 x 4650 x 12.34) ÷ 324.11
= 4249 CM ≈ 16510 CM
Based on Table For Circular Mill:
Use: No. 8 AWG Copper Conductor, 2-Wires
16510 1 Strand Hard Drawn Copper Conductor
16510 CMILS @ 3ft. Spacing Between Conductor
Actual Voltage Drop:
VDc Actual = (24 x D x I) ÷ CM)
= (24 x 4650 x 12.34) ÷16510
= 83.41 V
(For 3 ft. Spacing Between Three 16510 CM Wires:)
Based on Table
Ra = 3.79 Ω/mile
Xa = 0.665 Ω/mile
Xd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile
= 0.133 Ω/mile
Xt = Xa + Xd = 0.4127 Ω/mile
Reactance and Resistance Ratio (Xt/Ra):
Ratio= Xt ÷ Ra
= 0.412707678568674 ÷ 3.79
= 0.109
Based on Table : AC DROP FACTOR @ 85% = 0.98
Vac SS - A = 0.866 x Vdc actual x AC Drop Factor
= 0.866 x 83.41 x 0.98
= 70.79 V
Approximate Method:
e = [√3 x D x I x (RacosӨ +XtsinӨ)] ÷ 5280
= [√3 x 4650 x 12.34 x (3.79cos31.79 + 0.108893846588041sin31.79)] ÷ 5280
= 61.72 V
![Page 172: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/172.jpg)
B - E
Total kVA = 935.50 kVA
Total Current Computation:
INORTH = (Total kVA) ÷ (System Voltage x √3)
= (935.504) ÷ (34.5kV x √3)
= 15.66 A
Circular Mill Computation:
CM = (24 x D x I) ÷ Vdc
= (24 x 6600 x 15.66) ÷ 460.02
= 5392 CM ≈ 16510 CM
Based on Table For Circular Mill:
Use: No. 8 AWG Copper Conductor, 2-Wires
16510 1 Strand Hard Drawn Copper Conductor
16510 CMILS @ 3ft. Spacing Between Conductor
Actual Voltage Drop:
VDc Actual = (24 x D x I) ÷ CM)
= (O824 x 6600 x 15.66) ÷16510
= 150.24 V
(For 3 ft. Spacing Between Three 16510 CM Wires:)
Based on Table
Ra = 3.79 Ω/mile
Xa = 0.665 Ω/mile
Xd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile
= 0.133 Ω/mile
Xt = Xa + Xd = 0.4127 Ω/mile
Reactance and Resistance Ratio (Xt/Ra):
Ratio= Xt ÷ Ra
= 0.412707678568674 ÷ 3.79
= 0.109
Based on Table: AC DROP FACTOR @ 85% = 0.98
Vac SS - A = 0.866 x Vdc actual x AC Drop Factor
= 0.866 x 150.24 x 0.98
= 127.5 V
Approximate Method:
e = [√3 x D x I x (RacosӨ +XtsinӨ)] ÷ 5280
= [√3 x 6600 x 15.66 x (3.79cos31.79 + 0.108893846588041sin31.79)] ÷ 5280
= 111.2 V
![Page 173: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/173.jpg)
B - F
Total kVA = 338.76 kVA
Total Current Computation:
INORTH = (Total kVA) ÷ (System Voltage x √3)
= (338.756) ÷ (34.5kV x √3)
= 5.67 A
Circular Mill Computation:
CM = (24 x D x I) ÷ Vdc
= (24 x 1650 x 5.67) ÷ 115.01
= 1952 CM ≈ 16510 CM
Based on Table For Circular Mill:
Use: No. 8 AWG Copper Conductor, 2-Wires
16510 1 Strand Hard Drawn Copper Conductor
16510 CMILS @ 3ft. Spacing Between Conductor
Actual Voltage Drop:
VDc Actual = (24 x D x I) ÷ CM)
= (O824 x 1650 x 5.67) ÷16510
= 13.60 V
(For 3 ft. Spacing Between Three 16510 CM Wires:)
Based on Table
Ra = 3.79 Ω/mile
Xa = 0.665 Ω/mile
Xd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile
= 0.133 Ω/mile
Xt = Xa + Xd = 0.4127 Ω/mile
Reactance and Resistance Ratio (Xt/Ra):
Ratio= Xt ÷ Ra
= 0.412707678568674 ÷ 3.79
= 0.109
Based on Table: AC DROP FACTOR @ 85% = 0.98
Vac SS - A = 0.866 x Vdc actual x AC Drop Factor
= 0.866 x 13.60 x 0.98
= 11.54 V
Approximate Method:
e = [√3 x D x I x (RacosӨ +XtsinӨ)] ÷ 5280
= [√3 x 1650 x 5.67 x (3.79cos31.79 + 0.108893846588041sin31.79)] ÷ 5280
= 10.06 V
![Page 174: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/174.jpg)
F - G
Total kVA = 384.43 kVA
Total Current Computation:
INORTH = (Total kVA) ÷ (System Voltage x √3)
= (384.426) ÷ (34.5kV x √3)
= 6.43 A
Circular Mill Computation:
CM = (24 x D x I) ÷ Vdc
= (24 x 3300 x 6.43) ÷ 230.01
= 2214 CM ≈ 16510 CM
Based on Table For Circular Mill:
Use: No. 8 AWG Copper Conductor, 2-Wires
16510 1 Strand Hard Drawn Copper Conductor
16510 CMILS @ 3ft. Spacing Between Conductor
Actual Voltage Drop:
VDc Actual = (24 x D x I) ÷ CM)
= (O824 x 3300 x 6.43) ÷16510
= 30.85 V
(For 3 ft. Spacing Between Three 16510 CM Wires:)
Based on Table
Ra = 3.79 Ω/mile
Xa = 0.665 Ω/mile
Xd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile
= 0.133 Ω/mile
Xt = Xa + Xd = 0.4127 Ω/mile
Reactance and Resistance Ratio (Xt/Ra):
Ratio= Xt ÷ Ra
= 0.412707678568674 ÷ 3.79
= 0.109
Based on Table: AC DROP FACTOR @ 85% = 0.98
Vac SS - A = 0.866 x Vdc actual x AC Drop Factor
= 0.866 x 30.85 x 0.98
= 26.18 V
Approximate Method:
e = [√3 x D x I x (RacosӨ +XtsinӨ)] ÷ 5280
= [√3 x 3300 x 6.43 x (3.79cos31.79 + 0.108893846588041sin31.79)] ÷ 5280
= 22.82 V
![Page 175: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/175.jpg)
F - H
Total kVA = 96.33 kVA
Total Current Computation:
INORTH = (Total kVA) ÷ (System Voltage x √3)
= (96.328) ÷ (34.5kV x √3)
= 1.61 A
Circular Mill Computation:
CM = (24 x D x I) ÷ Vdc
= (24 x 1500 x 1.61) ÷ 104.55
= 554 CM ≈ 16510 CM
Based on Table For Circular Mill:
Use: No. 8 AWG Copper Conductor, 2-Wires
16510 1 Strand Hard Drawn Copper Conductor
16510 CMILS @ 3ft. Spacing Between Conductor
Actual Voltage Drop:
VDc Actual = (24 x D x I) ÷ CM)
= (O824 x 1500 x 1.61) ÷16510
= 3.51 V
(For 3 ft. Spacing Between Three 16510 CM Wires:)
Based on Table
Ra = 3.79 Ω/mile
Xa = 0.665 Ω/mile
Xd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile
= 0.133 Ω/mile
Xt = Xa + Xd = 0.4127 Ω/mile
Reactance and Resistance Ratio (Xt/Ra):
Ratio= Xt ÷ Ra
= 0.412707678568674 ÷ 3.79
= 0.109
Based on Table: AC DROP FACTOR @ 85% = 0.98
Vac SS - A = 0.866 x Vdc actual x AC Drop Factor
= 0.866 x 3.51 x 0.98
= 2.979 V
Approximate Method:
e = [√3 x D x I x (RacosӨ +XtsinӨ)] ÷ 5280
= [√3 x 1500 x 1.61 x (3.79cos31.79 + 0.108893846588041sin31.79)] ÷ 5280
= 2.598 V
![Page 176: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/176.jpg)
Computation of Distance:
Division # of Poles Po-Po Distance
SS - A' 7 150 1050 ft
A'-C' 19 150 2850 ft
B'-E' 18 150 2700 ft
D'-H' 14 150 2100 ft
F'-G' 7 150 1050 ft
A'-L' 43 150 6450 ft
J'-K' 3 150 450 ft
I'-Q' 17 150 2550 ft
M'-P' 12 150 1800 ft
N'-O' 11 150 1650 ft
Total = 22650
Allowable Voltage Drop per 1000ft:
Allowable VD = (1725 x 1000) ÷ 22650
= 76.16 V
Voltage Drop per Division:
Division Distance VD Vdc
SS - A' 1050 76.16 79.97 V
A'-C' 2850 76.16 217.06 V
B'-E' 2700 76.16 205.63 V
D'-H' 2100 76.16 159.94 V
F'-G' 1050 76.16 79.97 V
A'-L' 6450 76.16 491.23 V
J'-K' 450 76.16 34.27 V
I'-Q' 2550 76.16 194.21 V
M'-P' 1800 76.16 137.09 V
N'-O' 1650 76.16 125.66 V
Total = 1725 V
Reference TCL (kVA) I CM DcVd e Vac
SS - A' 94.44 #REF! 16510 #REF! #REF! #REF!
A'-C' 480.28 #REF! 16510 #REF! #REF! #REF!
B'-E' 505.96 #REF! 16510 #REF! #REF! #REF!
DESIGN OF PRIMARY DISTRIBUTION SYSTEM FEEDER 2
FEEDER 2: SUMMARY OF VALUES
![Page 177: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/177.jpg)
SS - A'
Total kVA = 94.44 kVA
Total Current Computation:
INORTH = (Total kVA) ÷ (System Voltage x √3)
= (94.44) ÷ (34.5kV x √3)
= 1.58 A
Circular Mill Computation:
CM = (24 x D x I) ÷ Vdc
= (24 x 1050 x 1.58) ÷ 79.97
= 498 CM ≈ 16510 CM
Based on Table For Circular Mill:
Use: No. 8 AWG Copper Conductor, 2-Wires
16510 1 Strand Hard Drawn Copper Conductor
16510 CMILS @ 3ft. Spacing Between Conductor
Actual Voltage Drop:
VDc Actual = (24 x D x I) ÷ CM)
= (24 x 1050 x 1.58) ÷16510
= 2.41 V
(For 3 ft. Spacing Between Three 16510 CM Wires:)
Based on Table
Ra = 3.79 Ω/mile
Xa = 0.665 Ω/mile
Xd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile
= 0.133 Ω/mile
Xt = Xa + Xd = 0.4127 Ω/mile
Reactance and Resistance Ratio (Xt/Ra):
Ratio= Xt ÷ Ra
= 0.412707678568674 ÷ 3.79
= 0.109
Based on Table : AC DROP FACTOR @ 85% = 0.98
Vac SS - A = 0.866 x Vdc actual x AC Drop Factor
= 0.866 x 2.41 x 0.98
= 2.045 V
Approximate Method:
e = [√3 x D x I x (RacosӨ +XtsinӨ)] ÷ 5280
= [√3 x 1050 x 1.58 x (3.79cos31.79 + 0.108893846588041sin31.79)] ÷ 5280
= 1.785 V
![Page 178: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/178.jpg)
A' - C'
Total kVA = 480.28 kVA
Total Current Computation:
INORTH = (Total kVA) ÷ (System Voltage x √3)
= (480.278) ÷ (34.5kV x √3)
= 8.04 A
Circular Mill Computation:
CM = (24 x D x I) ÷ Vdc
= (24 x 2850 x 8.04) ÷ 217.06
= 2534 CM ≈ 16510 CM
Based on Table For Circular Mill:
Use: No. 8 AWG Copper Conductor, 2-Wires
16510 1 Strand Hard Drawn Copper Conductor
16510 CMILS @ 3ft. Spacing Between Conductor
Actual Voltage Drop:
VDc Actual = (24 x D x I) ÷ CM)
= (24 x 2850 x 8.04) ÷16510
= 12.27 V
(For 3 ft. Spacing Between Three 16510 CM Wires:)
Based on Table
Ra = 3.79 Ω/mile
Xa = 0.665 Ω/mile
Xd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile
= 0.133 Ω/mile
Xt = Xa + Xd = 0.4127 Ω/mile
Reactance and Resistance Ratio (Xt/Ra):
Ratio= Xt ÷ Ra
= 0.412707678568674 ÷ 3.79
= 0.109
Based on Table : AC DROP FACTOR @ 85% = 0.98
Vac SS - A = 0.866 x Vdc actual x AC Drop Factor
= 0.866 x 12.27 x 0.98
= 10.413 V
Approximate Method:
e = [√3 x D x I x (RacosӨ +XtsinӨ)] ÷ 5280
= [√3 x 2850 x 8.04 x (3.79cos31.79 + 0.108893846588041sin31.79)] ÷ 5280
= 24.648 V
![Page 179: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/179.jpg)
B' - E'
Total kVA = 505.96 kVA
Total Current Computation:
INORTH = (Total kVA) ÷ (System Voltage x √3)
= (505.964) ÷ (34.5kV x √3)
= 8.47 A
Circular Mill Computation:
CM = (24 x D x I) ÷ Vdc
= (24 x 2700 x 8.47) ÷ 205.63
= 2669 CM ≈ 16510 CM
Based on Table For Circular Mill:
Use: No. 8 AWG Copper Conductor, 2-Wires
16510 1 Strand Hard Drawn Copper Conductor
16510 CMILS @ 3ft. Spacing Between Conductor
Actual Voltage Drop:
VDc Actual = (24 x D x I) ÷ CM)
= (24 x 2700 x 8.47) ÷16510
= 33.24 V
(For 3 ft. Spacing Between Three 16510 CM Wires:)
Based on Table
Ra = 3.79 Ω/mile
Xa = 0.665 Ω/mile
Xd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile
= 0.133 Ω/mile
Xt = Xa + Xd = 0.4127 Ω/mile
Reactance and Resistance Ratio (Xt/Ra):
Ratio= Xt ÷ Ra
= 0.412707678568674 ÷ 3.79
= 0.109
Based on Table : AC DROP FACTOR @ 85% = 0.98
Vac SS - A = 0.866 x Vdc actual x AC Drop Factor
= 0.866 x 33.24 x 0.98
= 28.21 V
Approximate Method:
e = [√3 x D x I x (RacosӨ +XtsinӨ)] ÷ 5280
= [√3 x 2700 x 8.47 x (3.79cos31.79 + 0.108893846588041sin31.79)] ÷ 5280
= 24.60 V
![Page 180: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/180.jpg)
D' - H'
Total kVA = 337.97 kVA
Total Current Computation:
INORTH = (Total kVA) ÷ (System Voltage x √3)
= (337.97) ÷ (34.5kV x √3)
= 5.66 A
Circular Mill Computation:
CM = (24 x D x I) ÷ Vdc
= (24 x 2100 x 5.66) ÷ 159.94
= 1784 CM ≈ 16510 CM
Based on Table For Circular Mill:
Use: No. 8 AWG Copper Conductor, 2-Wires
16510 1 Strand Hard Drawn Copper Conductor
16510 CMILS @ 3ft. Spacing Between Conductor
Actual Voltage Drop:
VDc Actual = (24 x D x I) ÷ CM)
= (O824 x 2100 x 5.66) ÷16510
= 17.28 V
(For 3 ft. Spacing Between Three 16510 CM Wires:)
Based on Table
Ra = 3.79 Ω/mile
Xa = 0.665 Ω/mile
Xd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile
= 0.133 Ω/mile
Xt = Xa + Xd = 0.4127 Ω/mile
Reactance and Resistance Ratio (Xt/Ra):
Ratio= Xt ÷ Ra
= 0.412707678568674 ÷ 3.79
= 0.109
Based on Table: AC DROP FACTOR @ 85% = 0.98
Vac SS - A = 0.866 x Vdc actual x AC Drop Factor
= 0.866 x 17.28 x 0.98
= 14.67 V
Approximate Method:
e = [√3 x D x I x (RacosӨ +XtsinӨ)] ÷ 5280
= [√3 x 2100 x 5.66 x (3.79cos31.79 + 0.108893846588041sin31.79)] ÷ 5280
= 12.79 V
![Page 181: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/181.jpg)
F' - G'
Total kVA = 547.62 kVA
Total Current Computation:
INORTH = (Total kVA) ÷ (System Voltage x √3)
= (547.62) ÷ (34.5kV x √3)
= 9.16 A
Circular Mill Computation:
CM = (24 x D x I) ÷ Vdc
= (24 x 1050 x 9.16) ÷ 79.97
= 2886 CM ≈ 16510 CM
Based on Table For Circular Mill:
Use: No. 8 AWG Copper Conductor, 2-Wires
16510 1 Strand Hard Drawn Copper Conductor
16510 CMILS @ 3ft. Spacing Between Conductor
Actual Voltage Drop:
VDc Actual = (24 x D x I) ÷ CM)
= (O824 x 1050 x 9.16) ÷16510
= 13.98 V
(For 3 ft. Spacing Between Three 16510 CM Wires:)
Based on Table
Ra = 3.79 Ω/mile
Xa = 0.665 Ω/mile
Xd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile
= 0.133 Ω/mile
Xt = Xa + Xd = 0.4127 Ω/mile
Reactance and Resistance Ratio (Xt/Ra):
Ratio= Xt ÷ Ra
= 0.412707678568674 ÷ 3.79
= 0.109
Based on Table: AC DROP FACTOR @ 85% = 0.98
Vac SS - A = 0.866 x Vdc actual x AC Drop Factor
= 0.866 x 13.98 x 0.98
= 11.86 V
Approximate Method:
e = [√3 x D x I x (RacosӨ +XtsinӨ)] ÷ 5280
= [√3 x 1050 x 9.16 x (3.79cos31.79 + 0.108893846588041sin31.79)] ÷ 5280
= 10.35 V
![Page 182: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/182.jpg)
A' - L'
Total kVA = 434.97 kVA
Total Current Computation:
INORTH = (Total kVA) ÷ (System Voltage x √3)
= (434.97) ÷ (34.5kV x √3)
= 7.28 A
Circular Mill Computation:
CM = (24 x D x I) ÷ Vdc
= (24 x 6450 x 7.28) ÷ 491.23
= 2294 CM ≈ 16510 CM
Based on Table For Circular Mill:
Use: No. 8 AWG Copper Conductor, 2-Wires
16510 1 Strand Hard Drawn Copper Conductor
16510 CMILS @ 3ft. Spacing Between Conductor
Actual Voltage Drop:
VDc Actual = (24 x D x I) ÷ CM)
= (O824 x 6450 x 7.28) ÷16510
= 68.26 V
(For 3 ft. Spacing Between Three 16510 CM Wires:)
Based on Table
Ra = 3.79 Ω/mile
Xa = 0.665 Ω/mile
Xd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile
= 0.133 Ω/mile
Xt = Xa + Xd = 0.4127 Ω/mile
Reactance and Resistance Ratio (Xt/Ra):
Ratio= Xt ÷ Ra
= 0.412707678568674 ÷ 3.79
= 0.109
Based on Table: AC DROP FACTOR @ 85% = 0.98
Vac SS - A = 0.866 x Vdc actual x AC Drop Factor
= 0.866 x 68.26 x 0.98
= 57.93 V
Approximate Method:
e = [√3 x D x I x (RacosӨ +XtsinӨ)] ÷ 5280
= [√3 x 6450 x 7.28 x (3.79cos31.79 + 0.108893846588041sin31.79)] ÷ 5280
= 50.51 V
![Page 183: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/183.jpg)
J' - K'
Total kVA = 47.22 kVA
Total Current Computation:
INORTH = (Total kVA) ÷ (System Voltage x √3)
= (47.22) ÷ (34.5kV x √3)
= 0.79 A
Circular Mill Computation:
CM = (24 x D x I) ÷ Vdc
= (24 x 450 x 0.79) ÷ 34.27
= 249 CM ≈ 16510 CM
Based on Table For Circular Mill:
Use: No. 8 AWG Copper Conductor, 2-Wires
16510 1 Strand Hard Drawn Copper Conductor
16510 CMILS @ 3ft. Spacing Between Conductor
Actual Voltage Drop:
VDc Actual = (24 x D x I) ÷ CM)
= (O824 x 450 x 0.79) ÷16510
= 0.52 V
(For 3 ft. Spacing Between Three 16510 CM Wires:)
Based on Table
Ra = 3.79 Ω/mile
Xa = 0.665 Ω/mile
Xd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile
= 0.133 Ω/mile
Xt = Xa + Xd = 0.4127 Ω/mile
Reactance and Resistance Ratio (Xt/Ra):
Ratio= Xt ÷ Ra
= 0.412707678568674 ÷ 3.79
= 0.109
Based on Table: AC DROP FACTOR @ 85% = 0.98
Vac SS - A = 0.866 x Vdc actual x AC Drop Factor
= 0.866 x 0.52 x 0.98
= 0.441 V
Approximate Method:
e = [√3 x D x I x (RacosӨ +XtsinӨ)] ÷ 5280
= [√3 x 450 x 0.79 x (3.79cos31.79 + 0.108893846588041sin31.79)] ÷ 5280
= 0.382 V
![Page 184: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/184.jpg)
I' - Q'
Total kVA = 333.87 kVA
Total Current Computation:
INORTH = (Total kVA) ÷ (System Voltage x √3)
= (333.874) ÷ (34.5kV x √3)
= 5.59 A
Circular Mill Computation:
CM = (24 x D x I) ÷ Vdc
= (24 x 2550 x 5.59) ÷ 194.21
= 1762 CM ≈ 16510 CM
Based on Table For Circular Mill:
Use: No. 8 AWG Copper Conductor, 2-Wires
16510 1 Strand Hard Drawn Copper Conductor
16510 CMILS @ 3ft. Spacing Between Conductor
Actual Voltage Drop:
VDc Actual = (24 x D x I) ÷ CM)
= (O824 x 2550 x 5.59) ÷16510
= 20.72 V
(For 3 ft. Spacing Between Three 16510 CM Wires:)
Based on Table
Ra = 3.79 Ω/mile
Xa = 0.665 Ω/mile
Xd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile
= 0.133 Ω/mile
Xt = Xa + Xd = 0.4127 Ω/mile
Reactance and Resistance Ratio (Xt/Ra):
Ratio= Xt ÷ Ra
= 0.412707678568674 ÷ 3.79
= 0.109
Based on Table: AC DROP FACTOR @ 85% = 0.98
Vac SS - A = 0.866 x Vdc actual x AC Drop Factor
= 0.866 x 20.72 x 0.98
= 17.58 V
Approximate Method:
e = [√3 x D x I x (RacosӨ +XtsinӨ)] ÷ 5280
= [√3 x 2550 x 5.59 x (3.79cos31.79 + 0.108893846588041sin31.79)] ÷ 5280
= 15.33 V
![Page 185: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/185.jpg)
M' - P'
Total kVA = 75.96 kVA
Total Current Computation:
INORTH = (Total kVA) ÷ (System Voltage x √3)
= (75.96) ÷ (34.5kV x √3)
= 1.27 A
Circular Mill Computation:
CM = (24 x D x I) ÷ Vdc
= (24 x 1800 x 1.27) ÷ 137.09
= 400 CM ≈ 16510 CM
Based on Table For Circular Mill:
Use: No. 8 AWG Copper Conductor, 2-Wires
16510 1 Strand Hard Drawn Copper Conductor
16510 CMILS @ 3ft. Spacing Between Conductor
Actual Voltage Drop:
VDc Actual = (24 x D x I) ÷ CM)
= (O824 x 1800 x 1.27) ÷16510
= 3.32 V
(For 3 ft. Spacing Between Three 16510 CM Wires:)
Based on Table
Ra = 3.79 Ω/mile
Xa = 0.665 Ω/mile
Xd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile
= 0.133 Ω/mile
Xt = Xa + Xd = 0.4127 Ω/mile
Reactance and Resistance Ratio (Xt/Ra):
Ratio= Xt ÷ Ra
= 0.412707678568674 ÷ 3.79
= 0.109
Based on Table: AC DROP FACTOR @ 85% = 0.98
Vac SS - A = 0.866 x Vdc actual x AC Drop Factor
= 0.866 x 3.32 x 0.98
= 2.818 V
Approximate Method:
e = [√3 x D x I x (RacosӨ +XtsinӨ)] ÷ 5280
= [√3 x 1800 x 1.27 x (3.79cos31.79 + 0.108893846588041sin31.79)] ÷ 5280
= 2.459 V
![Page 186: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/186.jpg)
N' - O'
Total kVA = 122.32 kVA
Total Current Computation:
INORTH = (Total kVA) ÷ (System Voltage x √3)
= (122.318) ÷ (34.5kV x √3)
= 2.05 A
Circular Mill Computation:
CM = (24 x D x I) ÷ Vdc
= (24 x 1650 x 2.05) ÷ 125.66
= 646 CM ≈ 16510 CM
Based on Table For Circular Mill:
Use: No. 8 AWG Copper Conductor, 2-Wires
16510 1 Strand Hard Drawn Copper Conductor
16510 CMILS @ 3ft. Spacing Between Conductor
Actual Voltage Drop:
VDc Actual = (24 x D x I) ÷ CM)
= (O824 x 1650 x 2.05) ÷16510
= 4.92 V
(For 3 ft. Spacing Between Three 16510 CM Wires:)
Based on Table
Ra = 3.79 Ω/mile
Xa = 0.665 Ω/mile
Xd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile
= 0.133 Ω/mile
Xt = Xa + Xd = 0.4127 Ω/mile
Reactance and Resistance Ratio (Xt/Ra):
Ratio= Xt ÷ Ra
= 0.412707678568674 ÷ 3.79
= 0.109
Based on Table: AC DROP FACTOR @ 85% = 0.98
Vac SS - A = 0.866 x Vdc actual x AC Drop Factor
= 0.866 x 4.92 x 0.98
= 4.176 V
Approximate Method:
e = [√3 x D x I x (RacosӨ +XtsinӨ)] ÷ 5280
= [√3 x 1650 x 2.05 x (3.79cos31.79 + 0.108893846588041sin31.79)] ÷ 5280
= 3.638 V
![Page 187: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/187.jpg)
Computation of Distance:
Division # of Poles Po-Po Distance
SS - D'' 15 150 2250 ft
A''-B'' 31 150 4650 ft
A''-C'' 37 150 5550 ft
D''-F'' 23 150 3450 ft
E''-G'' 2 150 300 ft
D''-H'' 47 150 7050 ft
Total = 23250
Allowable Voltage Drop per 1000ft:
Allowable VD = (1725 x 1000) ÷ 23250
= 74.19 V
Voltage Drop per Division:
Division Distance VD Vdc
SS - D' 2250 74.19 166.93 V
A''-B'' 4650 74.19 344.98 V
A''-C'' 5550 74.19 411.75 V
D''-F'' 3450 74.19 255.96 V
E''-G'' 300 74.19 22.26 V
D''-H'' 7050 74.19 523.04 V
Total = 1725 V
Reference TCL (kVA) I CM DcVd e Vac
SS - D' #REF! #REF! 16510 #REF! #REF! #REF!
A''-B'' #REF! #REF! 16510 #REF! #REF! #REF!
A''-C'' #REF! #REF! 16510 #REF! #REF! #REF!
D''-F'' #REF! #REF! 16510 #REF! #REF! #REF!
E''-G'' #REF! #REF! 16510 #REF! #REF! #REF!
D''-H'' #REF! #REF! 16510 #REF! #REF! #REF!
TOTAL #REF! 29.38 525.96 433.59 355.28
DESIGN OF PRIMARY DISTRIBUTION SYSTEM FEEDER 1
FEEDER 1: SUMMARY OF VALUES
![Page 188: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/188.jpg)
SS - D"
Total kVA = 146.00 kVA
Total Current Computation:
INORTH = (Total kVA) ÷ (System Voltage x √3)
= (146.004) ÷ (34.5kV x √3)
= 2.44 A
Circular Mill Computation:
CM = (24 x D x I) ÷ Vdc
= (24 x 2250 x 2.44) ÷ 166.93
= 789 CM ≈ 16510 CM
Based on Table For Circular Mill:
Use: No. 8 AWG Copper Conductor, 2-Wires
16510 1 Strand Hard Drawn Copper Conductor
16510 CMILS @ 3ft. Spacing Between Conductor
Actual Voltage Drop:
VDc Actual = (24 x D x I) ÷ CM)
= (24 x 2250 x 2.44) ÷16510
= 7.98 V
(For 3 ft. Spacing Between Three 16510 CM Wires:)
Based on Table
Ra = 3.79 Ω/mile
Xa = 0.665 Ω/mile
Xd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile
= 0.133 Ω/mileXt = Xa + Xd = 0.4127 Ω/mile
Reactance and Resistance Ratio (Xt/Ra):
Ratio= Xt ÷ Ra
= 0.412707678568674 ÷ 3.79
= 0.109
Based on Table : AC DROP FACTOR @ 85% = 0.98
Vac SS - A = 0.866 x Vdc actual x AC Drop Factor
= 0.866 x 7.98 x 0.98
= 6.772 V
Approximate Method:
e = [√3 x D x I x (RacosӨ +XtsinӨ)] ÷ 5280
= [√3 x 2250 x 2.44 x (cos31.79 + 0.108893846588041sin31.79)] ÷ 5280
= 5.905 V
![Page 189: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/189.jpg)
A" - B"
Total kVA = 274.93 kVA
Total Current Computation:
INORTH = (Total kVA) ÷ (System Voltage x √3)
= (274.932) ÷ (34.5kV x √3)
= 4.60 A
Circular Mill Computation:
CM = (24 x D x I) ÷ Vdc
= (24 x 4650 x 4.60) ÷ 344.98
= 1488 CM ≈ 16510 CM
Based on Table For Circular Mill:
Use: No. 8 AWG Copper Conductor, 2-Wires
16510 1 Strand Hard Drawn Copper Conductor
16510 CMILS @ 3ft. Spacing Between Conductor
Actual Voltage Drop:
VDc Actual = (24 x D x I) ÷ CM)
= (24 x 4650 x 4.60) ÷16510
= 15.05 V
(For 3 ft. Spacing Between Three 16510 CM Wires:)
Based on Table
Ra = 3.79 Ω/mile
Xa = 0.665 Ω/mile
Xd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile
= 0.133 Ω/mileXt = Xa + Xd = 0.4127 Ω/mile
Reactance and Resistance Ratio (Xt/Ra):
Ratio= Xt ÷ Ra
= 0.412707678568674 ÷ 3.79
= 0.109
Based on Table : AC DROP FACTOR @ 85% = 0.98
Vac SS - A = 0.866 x Vdc actual x AC Drop Factor
= 0.866 x 15.05 x 0.98
= 12.77 V
Approximate Method:
e = [√3 x D x I x (RacosӨ +XtsinӨ)] ÷ 5280
= [√3 x 4650 x 4.60 x (3.79cos31.79 + 0.108893846588041sin31.79)] ÷ 5280
= 23.01 V
![Page 190: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/190.jpg)
A" - C"
Total kVA = 928.76 kVA
Total Current Computation:
INORTH = (Total kVA) ÷ (System Voltage x √3)
= (928.758) ÷ (34.5kV x √3)
= 15.54 A
Circular Mill Computation:
CM = (24 x D x I) ÷ Vdc
= (24 x 5550 x 15.54) ÷ 411.75
= 5027 CM ≈ 16510 CM
Based on Table For Circular Mill:
Use: No. 8 AWG Copper Conductor, 2-Wires
16510 1 Strand Hard Drawn Copper Conductor
16510 CMILS @ 3ft. Spacing Between Conductor
Actual Voltage Drop:
VDc Actual = (24 x D x I) ÷ CM)
= (24 x 5550 x 15.54) ÷16510
= 125.37 V
(For 3 ft. Spacing Between Three 16510 CM Wires:)
Based on Table
Ra = 3.79 Ω/mile
Xa = 0.665 Ω/mile
Xd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile
= 0.133 Ω/mileXt = Xa + Xd = 0.4127 Ω/mile
Reactance and Resistance Ratio (Xt/Ra):
Ratio= Xt ÷ Ra
= 0.412707678568674 ÷ 3.79
= 0.109
Based on Table : AC DROP FACTOR @ 85% = 0.98
Vac SS - A = 0.866 x Vdc actual x AC Drop Factor
= 0.866 x 125.37 x 0.98
= 106.4 V
Approximate Method:
e = [√3 x D x I x (RacosӨ +XtsinӨ)] ÷ 5280
= [√3 x 5550 x 15.54 x (3.79cos31.79 + 0.108893846588041sin31.79)] ÷ 5280
= 92.77 V
![Page 191: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/191.jpg)
D" - F"
Total kVA = 715.07 kVA
Total Current Computation:
INORTH = (Total kVA) ÷ (System Voltage x √3)
= (715.074) ÷ (34.5kV x √3)
= 11.97 A
Circular Mill Computation:
CM = (24 x D x I) ÷ Vdc
= (24 x 3450 x 11.97) ÷ 255.96
= 3872 CM ≈ 16510 CM
Based on Table For Circular Mill:
Use: No. 8 AWG Copper Conductor, 2-Wires
16510 1 Strand Hard Drawn Copper Conductor
16510 CMILS @ 3ft. Spacing Between Conductor
Actual Voltage Drop:
VDc Actual = (24 x D x I) ÷ CM)
= (O824 x 3450 x 11.97) ÷16510
= 60.03 V
(For 3 ft. Spacing Between Three 16510 CM Wires:)
Based on Table
Ra = 3.79 Ω/mile
Xa = 0.665 Ω/mile
Xd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile
= 0.133 Ω/mileXt = Xa + Xd = 0.4127 Ω/mile
Reactance and Resistance Ratio (Xt/Ra):
Ratio= Xt ÷ Ra
= 0.412707678568674 ÷ 3.79
= 0.109
Based on Table: AC DROP FACTOR @ 85% = 0.98
Vac SS - A = 0.866 x Vdc actual x AC Drop Factor
= 0.866 x 60.03 x 0.98
= 50.95 V
Approximate Method:
e = [√3 x D x I x (RacosӨ +XtsinӨ)] ÷ 5280
= [√3 x 3450 x 11.97 x (3.79cos31.79 + 0.108893846588041sin31.79)] ÷ 5280
= 44.42 V
![Page 192: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/192.jpg)
E" - G"
Total kVA = 99.57 kVA
Total Current Computation:
INORTH = (Total kVA) ÷ (System Voltage x √3)
= (99.572) ÷ (34.5kV x √3)
= 1.67 A
Circular Mill Computation:
CM = (24 x D x I) ÷ Vdc
= (24 x 300 x 1.67) ÷ 22.26
= 540 CM ≈ 16510 CM
Based on Table For Circular Mill:
Use: No. 8 AWG Copper Conductor, 2-Wires
16510 1 Strand Hard Drawn Copper Conductor
16510 CMILS @ 3ft. Spacing Between Conductor
Actual Voltage Drop:
VDc Actual = (24 x D x I) ÷ CM)
= (O824 x 300 x 1.67) ÷16510
= 0.73 V
(For 3 ft. Spacing Between Three 16510 CM Wires:)
Based on Table
Ra = 3.79 Ω/mile
Xa = 0.665 Ω/mile
Xd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile
= 0.133 Ω/mileXt = Xa + Xd = 0.4127 Ω/mile
Reactance and Resistance Ratio (Xt/Ra):
Ratio= Xt ÷ Ra
= 0.412707678568674 ÷ 3.79
= 0.109
Based on Table: AC DROP FACTOR @ 85% = 0.98
Vac SS - A = 0.866 x Vdc actual x AC Drop Factor
= 0.866 x 0.73 x 0.98
= 0.62 V
Approximate Method:
e = [√3 x D x I x (RacosӨ +XtsinӨ)] ÷ 5280
= [√3 x 300 x 1.67 x (3.79cos31.79 + 0.108893846588041sin31.79)] ÷ 5280
= 0.539 V
![Page 193: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/193.jpg)
D" - H"
Total kVA = 384.43 kVA
Total Current Computation:
INORTH = (Total kVA) ÷ (System Voltage x √3)
= (384.426) ÷ (34.5kV x √3)
= 6.43 A
Circular Mill Computation:
CM = (24 x D x I) ÷ Vdc
= (24 x 7050 x 6.43) ÷
= #DIV/0! CM ≈ #DIV/0! CM
Based on Table For Circular Mill:
Use: No. 8 AWG Copper Conductor, 2-Wires
16510 1 Strand Hard Drawn Copper Conductor
#DIV/0! CMILS @ 3ft. Spacing Between Conductor
Actual Voltage Drop:
VDc Actual = (24 x D x I) ÷ CM)
= #DIV/0!
= #DIV/0! V
#DIV/0!
Based on Table
Ra = 3.79 Ω/mile
Xa = 0.665 Ω/mile
Xd = 0.2794 log GMR Ω/mile
= 0.2794 log √(3 x 3) Ω/mile
= 0.133 Ω/mileXt = Xa + Xd = 0.4127 Ω/mile
Reactance and Resistance Ratio (Xt/Ra):
Ratio= Xt ÷ Ra
= 0.412707678568674 ÷ 3.79
= 0.109
Based on Table: AC DROP FACTOR @ 85% = 0.98
Vac SS - A = 0.866 x Vdc actual x AC Drop Factor
= #DIV/0!
= #DIV/0! V
Approximate Method:
e = [√3 x D x I x (RacosӨ +XtsinӨ)] ÷ 5280
= [√3 x 7050 x 6.43 x (3.79cos31.79 + 0.108893846588041sin31.79)] ÷ 5280
= 48.76 V
![Page 194: Cable Sizing Calc](https://reader033.fdocuments.net/reader033/viewer/2022050710/563dbbaa550346aa9aaf2f48/html5/thumbnails/194.jpg)
Reference TCL, kVA I, Amp CM ACSR AWG DCvd e, V Vac
PP - A #REF! #REF! #REF! 16510 8 #REF! #REF! #REF!A - B #REF! #REF! #REF! 16510 8 #REF! #REF! #REF!A - A' #REF! #REF! #REF! 16510 8 #REF! #REF! #REF!A' - C' #REF! #REF! #REF! 16510 8 #REF! #REF! #REF!A" - C" #REF! #REF! #REF! 16510 8 #REF! #REF! #REF!
TOTAL #REF! 26.38 525.96 #REF! #REF!
VOLTAGE REGULATION FOR FEEDER 1
#REF!
#REF!
Reference TCL, kVA I, Amp CM ACSR AWG DCvd e, V Vac
PP - A #REF! #REF! #REF! 16510 8 #REF! #REF! #REF!A - A' #REF! #REF! #REF! 16510 8 #REF! #REF! #REF!A -B #REF! #REF! #REF! 16510 8 #REF! #REF! #REF!B - B' #REF! #REF! #REF! 16510 8 #REF! #REF! #REF!B - B" #REF! #REF! #REF! 16510 8 #REF! #REF! #REF!B - C #REF! #REF! #REF! 16510 8 #REF! #REF! #REF!C - C' #REF! #REF! #REF! 16510 8 #REF! #REF! #REF!C - C" #REF! #REF! #REF! 16510 8 #REF! #REF! #REF!
TOTAL #REF! 29.98 295.43 #REF! #REF!
VOLTAGE REGULATION FOR FEEDER 1
#REF!
#REF!
Reference TCL, kVA I, Amp CM ACSR AWG DCvd e, V Vac
PP - A #REF! #REF! #REF! 16510 8 #REF! #REF! #REF!A - A' #REF! #REF! #REF! 16510 8 #REF! #REF! #REF!A -B #REF! #REF! #REF! 16510 8 #REF! #REF! #REF!B - B' #REF! #REF! #REF! 16510 8 #REF! #REF! #REF!B - B" #REF! #REF! #REF! 16510 8 #REF! #REF! #REF!B - C #REF! #REF! #REF! 16510 8 #REF! #REF! #REF!C - C' #REF! #REF! #REF! 16510 8 #REF! #REF! #REF!
TOTAL #REF! 28.9 295.43 #REF! #REF!
VOLTAGE REGULATION FOR FEEDER 1
#REF!
#REF!
SUMMARY OF VALUES FOR FEEDER 1
%VR= (∑Vac / Vp) x 100 = #REF!
%VR= (∑Ve / Vp) x 100 = #REF!
SUMMARY OF VALUES FOR FEEDER 2
%VR= (∑Vac / Vp) x 100 = #REF!
%VR= (∑Ve / Vp) x 100 = #REF!
%VR= (∑Ve / Vp) x 100 = #REF!
SUMMARY OF VALUES FOR FEEDER 3
%VR= (∑Vac / Vp) x 100 = #REF!
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PEC 2009 Edition, Table 2.50.3.17
Grounding Electrode Conductor for Alternating‐Current System
Over 400 MCM to 600 MCM
Over 600 MCM to 1000 MCM
COPPER
2 AWG or Smaller
AWG/MCM
Equivalent for Ungrounded
14
22
‐
1 AWG or 1/0 AWG
2/0 or 3/0 AWG
Over 3/0 AWG to 400 MCM30
50
60
80
Over 325 through 500
Over 500
Over 80 through 200
Over 200 through 325
38 or 50
60 or 80
(mm²)
Size of Grounding
Electrode Conductor
COPPER
Size of Largest Ungrounded
Service Entrance Conductor or
Equivalent Area for Parallel Conductors
(mm²)
8
COPPER
30 or Smaller
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1/0 AWG
2/0 AWG
COPPER
8 AWG
AWG/MCM
Equivalent for
grounded
‐
6 AWG
4 AWG
2 AWG
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BLOCK NO. RESIDENTIAL COMMERCIAL INDUSTRIAL TOTAL kVA
SUMMARY OF LOADS
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TOTAL kVA
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AB BC CA 3Ф AB BC CA 3Ф AB BC CA 3Ф
1 11 21
2 12 22
3 13 23
4 14 24
5 15 25
6 16 26
7 17 27
8 18 28
9 19 29
10 20 30
Sum Sum Sum
Total Total Total
Total Load kVA =
FEEDER LOAD BALANCING
BLOCK PHASE BLOCK PHASE BLOCK PHASE