Quick Reference Guide

Commissioning Package (CP) Photos for Photovoltaic (PV) Installations

Domestic U.S.

SUNNOVA – Commissioning Package (CP) Photos for Photovoltaic (PV) Installations- Domestic U.S.-

E010-REV0 9-11-20

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***SUBMIT PHOTOS 5 TO 7 MEGAPIXEL TO ALLOW ZOOM FOR DETAILS*** Roof Arrays and Module Label

- Provide a picture of the manufacturer’s label from the back of one of the modules. - Provide a photo of each array in its entirety. If possible, provide a single photo of the roof showing each of the arrays in context with their surroundings.

Attachments – Mid Clamps and End Clamps

- Provide an example of a properly installed end clamp and mid clamp used to secure arrays. NOTES: 1. Torque to manufacturer’s specifications using a calibrated torque tool.

Array Tilt – One for Each Array

- Provide an image showing the array tilt. This picture must be on an array, and with the modules visibly present. NOTES: 1. If there are multiple arrays installed, with more than one tilt, provide a tilt measurement for each array.

SUNNOVA – Commissioning Package (CP) Photos for Photovoltaic (PV) Installations- Domestic U.S.-

E010-REV0 9-11-20

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Conduit Runs / Penetration / Home Run Conduit

- Provide a picture showing the conduit run on the roof surface properly supported and flashed. - Provide a picture showing the conduit run from the roof to electrical panels. - Provide a picture showing the conduit roof penetration properly flashed NOTES: 1. Conduit shall have adequate spacing from the roof surface. 2. Conduit shall never come in direct contact with the roof surface. 3. Flexible Conduit is not allowed on the roof portion of the install. 4. Conduit supports shall maintain adequate spacing from the roof surface

SUNNOVA – Commissioning Package (CP) Photos for Photovoltaic (PV) Installations- Domestic U.S.-

E010-REV0 9-11-20

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Flashing

Please refer to the Flashing Best Practices document located on the HUB. - Provide appropriate pictures of the structural flashing & weatherproofing used for this installation. -Provide pictures of any roof repairs made as a result of damage caused during installation. NOTES: 1. A threaded anchor rod with two-part epoxy is suggested for flat concrete roof applications. 2. If roof attachment is not provided by the racking manufacturer and is not listed as an approved method by Sunnova, it may need prior approval by Sunnova Engineering.

Underneath Array

- Provide picture underneath the array demonstrating proper wire management. If there are multiple arrays installed, provide a photo for each separate array. NOTES: 1. Ensure all wiring and connectors are secured properly, cables should not be loose or touching the roof surface at any point. 2. If tie-wraps or clips are used, they shall be UV rated and last for the life of the system.

Shading – Pre and Post Installation Pictures

Please refer to the Shading Study Requirements document located on the HUB. - Pictures of items causing shade. - Provide pre and post pictures of items which were removed to eliminate shade. NOTES: 1. A panoramic picture starting 90 degrees left of the array azimuth and ending 90 degrees to the right of the array azimuth will help on reviewing shading analysis. Submit multiple pictures if this view cannot be captured in a single picture.

SUNNOVA – Commissioning Package (CP) Photos for Photovoltaic (PV) Installations- Domestic U.S.-

E010-REV0 9-11-20

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Structural / Racking

-Provide a photo of the full racking assembly before installing modules. -Provide an image showing stanchion attachment to rail. -Provide an image showing attachment to underlying structure. -Provide an image showing length of span. NOTES: 1. Mounting systems must follow manufacturer’s installation guidelines. 2. Location of supports on modules must follow manufacturer guidelines.

J-Box / Conduit Entrance

- Provide a picture showing the open junction box or conduit entrance demonstrating proper conductor strain relief, weather protection, and conduit stability. - Provide a picture of the splices. If using a crimp show splice before and after covering. NOTES: 1. It is recommended that splices made on power generation source circuits are irreversible or MC4 type. 2. All splicing means shall be rated for the location.

AC Combiner Panel

-Provide a picture showing all AC combiner panel electrical enclosure(s). (Image must be clear to legibly show OCPD amp ratings.) - Provide an image showing the combiner panel rating sticker with busbar rating and NEMA install location rating. NOTES: 1. Connecting any load to the Envoy combiner box is not permitted. In cases where you must connect a load circuit breaker on other combiner panels, please make sure that it complies with the NEC 120% rule. 2. Installed circuit breakers must comply with the panel manufacturer’s requirements

AC Disconnect

-Provide a picture showing properly sized AC disconnect (safety switch) with a clear view of the inside. For a fused AC disconnect, make sure the amp rating is clearly visible. (may require more than one picture) - Provide a picture showing label with voltage and amperage rating. NOTES: 1. Connections must be torqued per manufacturer requirements. It is good practice to place a mark across each lug to show this has been accomplished.

SUNNOVA – Commissioning Package (CP) Photos for Photovoltaic (PV) Installations- Domestic U.S.-

E010-REV0 9-11-20

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Interconnection

- Provide a picture of the interconnection point including utility main breaker. Ratings for the main breaker and backfed breaker (where applicable) must be clearly visible. - For all line side taps, provide a picture of the interconnection point with the means of splicing clearly visible. - Provide a picture of panelboard rating sticker with busbar rating visible. NOTES: 1. Make sure that the interconnection method is properly rated for the application. 2. If using piercing connector for a line side tap, ensure it is properly rated for system current and torque to manufacturer specifications.

Consumption & Production CTs

- Provide photos clearly showing the installed consumption CTs. - Provide photos clearly showing the installed production CTs.

Enphase Microinverter Installations

- Provide picture of at least one installed microinverter with model number clearly visible - Provide picture of serial number map for microinverter serial numbers. - Provide an image of the Sunnova monitor, with the serial number clearly visible. - Provide Sunnova ownership access to the Enlighten monitoring service. information regarding the Envoy’s access can be sent to enphase.monitoring@sunnova.com. - Provide a screenshot of the Enphase registration process showing Envoy serial number and Sunnova Energy Corporation under System Access.

SUNNOVA – Commissioning Package (CP) Photos for Photovoltaic (PV) Installations- Domestic U.S.-

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SolarEdge Installations

- Provide legible picture of each string inverter’s serial number. - Provide a picture(s) showing each inverter’s serial number. - Provide a photo showing the Voc for each string, to confirm the Voc is within the expected range. NOTE: The 13.23 volts shown in the example photo would be expected for 13 optimizers. - Submit screenshot of SetApp screen with production meter serial number shown. - Provide Sunnova access to the SolarEdge portal. Use this email solaredgemonitoring_ rgm@sunnova.com, and set the access level to view and edit.