Visual Inspection - Interactive Guide

8/3/2019 Visual Inspection - Interactive Guide

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CLICK SELV

CLICK PELV

CLICK Double or Reinforced Insulation

CLICK Insulation of live parts

CLICK Barriers or enclosures

CLICK Obstacles **

CLICK Placing out of reach **

CLICK Presence of Earthing conductor

CLICK Presence of circuit protective conductors

CLICK Presence of main protective bonding conductors

CLICK

CLICK

CLICK FELV

CLICK

Basic Protection

Fault protection

Choice and setting of protective and monitoring devices (for

fault and/or over-current protection)

Protective measure(s) against electric shock. Basic fault

protection

Presence of adequate arrangements for alternative sources,

where applicable

Presence of earthing arrangement for combined protective

and functional purpose

Visual inspection - learning aid. To discover more about an it

taken to a note file or read the comme


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CLICK Absence of protective conductors

CLICK Presence of Earth free equipotential bonding

CLICK For one item of current using equipment

CLICK For more than one item of current using equipment

CLICK Presence of Residual Current device(s)

CLICK Presence of supplementary bonding conductors

For further reading please refer to: Ins

periodic reporting) NICEI

Additional protection

CLICK TO GO TO

Electrical separation

Non conducting location **

Earth free equipotential bonding **


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CLICK Proximity of non-electrical services & other influences

CLICK

CLICK Segregation of safety circuits

CLICK

CLICK Presence of danger notices and other warning notices

CLICK Labelling of protective devices, switches and terminals

CLICK Identification of conductors

CLICK

CLICK Erection methods

CLICK Routing of cables in prescribed zones

CLICK

CLICK

CLICK Connection of conductors

CLICK

Cables incorporating earthed armour or sheath, or run in an

earthed wiring system, or otherwise protected against nails,

screws and the like

Additional protection provided by 30mA RCD for cables

concealed in walls (where required in premises not underthe supervision of skilled or instructed person)

Presence of fire barriers, suitable seals and protection

Identification

Cables & conductors

Selection of conductors for current carrying capacity and

voltage drop

Prevention of mutual detrimental influence

Presence of diagrams, instructions, circuit charts and similar

information

Segregation of Band I & Band II circuits or Band II Insulation

used


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CLICK

CLICK Adequacy of access to switchgear and other equipment

CLICK

CLICK

CLICK Correct connection of accessories and equipment

CLICK Presence of under-voltage protective devices

CLICK

CLICK Selection of appropriate functional switching devices

Selection of equipment and protective measures

appropriate to external influences

Particular protective measures for special installations or

locations

Connection of single pole devices for protection or

switching in line conductors only

against thermal effects

General

Presence and correct location of appropriate devices for

isolation and switching


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RETURN SELV

RETURN PELV

RETURN Double or reinforced Insulation

RETURN Insulation of live parts

RETURN Barriers or enclosures

Protective measure(s) against

Pictures!B31

Double or rein

Basic protectiis provided by

fault protecti

accessible par

Separated ext

recognised by

important thi

SELV side sho

Pictures!D7

Pictures!B19

Visual inspection - Definitions table

An understan

for the inspec

Barriers or en

at least IP2X oor enclosure

Protected ext

side is generalwill not be sui

special install

Basic

Inspection of t

covered with i

with the relev

intended to p

generally not

normal servic


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RETURN Presence of CPC

RETURN

RETURN

RETURN

RETURN FELV

RETURN

RETURN Absence of protective conductors

A visual inspe

where require

have determi

application of

cables, or be f

may also be u

Note. Metallic enclosures used for CPC

purposes must satisfy the requirements of

section 543 of BS7671, in terms of continuity,

CSA and reliability

Main protecti

earthing termi

include: Steel

1, Water insta

installation pi

installation piThe installatio

conductors to

should confir

area and are c

BS7671 the co

purposes only

Where a suppl

inspection sh

safety are pre

automatic swi

generators, in

BS7671.

Presence of main protective

bonding conductors

A functional e

measures req

used for both

applied. 1) Ba

barriers/encloprotective con

This section c

current monit

current, Type,

verify confor

Choice and setting of protective and

monitoring devices (for fault and/or over

current protection)

Presence of earthing arrangement

for combined protective and

functional purpose

E.g. IT SUITES

Presence of adequate

arrangements for alternative

sources, where applicable

Non conducting location **

None of the in

may be marke


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RETURN

RETURN

RETURN

RETURN

RETURN Segregation of safety circuits Fire alarm and

other circuits

importance of

breakdown of

caused by a fa

Electromagne

another circui

resulting from

conduit, ducts

Iden

P f di i i Th

Addition

Addition prot

points or circu

are intended f

current ratinginstallations a

Some of the l

in section 7 of

bonding may

411.3.1.2 of B

Presence of residual current

device(s)

RCD's should have the operating characteristics as

given in section 415 of BS7671.i.e. operating current not exceeding 30mA and

operating time not exceeding 40ms.

Presence of supplementary

bonding conductors

It should be v

occurred, are

any part of th

Segregation o

Where every c

separate cont

separate com

separation.

The requirement for supplementary equipotential

bonding is generally applicable only to installationsand locations where there is an increased risk of

electric shock.

Prevention of mutu

Proximity of non-electrical services

& other influences

Segregation of Band I & Band II

circuits or Band II Insulation usedBand I = Voltage too low to cause serious electric shocks e.g.

ELV including telecommunications, bell wire, control and

alarm circuits.

Band II = All voltages used in electrical installations not

included in Band I. So all 230/400v supplies are included.


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RETURN

RETURN Identification of conductors

RETURN

RETURN Erection Methods

RETURN

RETURN

protective con

supply (Regul

Labelling of protective devices,

switches and terminals

The inspector

protective de

necessary). Lacircuit breake

1) It is arrange

recognised, a

rated current i

The correct idconductors, in

This is in addit

connection re

exceptions* (

identified by c

must be identi

Cables concea

50mm or less

appropriate st

they are cable

zones.

If a cable cann

conduit or SW

The sizes and

trunking syste

information t

the designer. I

available to th

Cables a

Selection of conductors for current

carrying capacity and voltage drop

Note: Particular attention should be given to

cables in contact with thermally insulating

material.

Adequate inspinstallation is

Compliance w

considered at

all equipment

equivalent, ar

defective so aRouting of cables in prescribed

zones

Cables incorporating earthed

armour or sheath or run in an


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RETURN

RETURN

RETURN

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RETURN

G

Presence and correct location of

appropriate devices for isolationand switching

Correct connection of accessories

and equipment

The inspector

equipment ar

well made bot

where possibl

Presence of under-voltageprotective devices

The inspectordevices which

of a significan

They are foun

motors. They

automatic con

inspector sho

design require

Particular protective measures for

special installations and locations

The special in

the risks assoc

or minimal clo

other risks, su

and installatio

measures ass

shower etc.Connection of single pole devices

for protection or switching in line

conductors only

This is a visual

are connected

breaker, fuse,

the like shoul

made in additi

conducted lat

Adequacy of access to switchgear

and other equipment

It must be con

have been aff

inspection, te

Isolation and

namely isolatiand functional

purposes of in

however, that

provided that

requirements


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eneral


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RETURN

RETURN

RETURN

PELV

Visual inspection - Definitions table - CLICK HE

SELV

Double or Reinforced Insulation

Insulation of live parts


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RETURN

RETURN Placing out of reach **

Obstacles **


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RETURN

RETURN

For the periodic inspection of an existing installation, the inspector

will need to make an assessment based on all the relevant

circumstances. The electrical safety council technical manual and

IEE Guidance note 5: Protection against electric shock and Guidance

note 8: Earthing and bonding which give advice to help determine

whether or not a conductive part is an extraneous-conductive-part.

Other examples of extraneous conductive parts include:

1, Central heating and air conditioning systems2, Exposed metallic structural parts of a buildings

3, Connection to a lightning protection system to the protective

equipotential bonding (made in accordance with BSEN 62305)

Presence of main protective bonding conductors

FELV

Choice of setting of protective and monitoring devices (for fault


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Segregation of Band I and Band II circuits or band II insulation us

Identification of conductors

Presence of danger notices and other warning notices - EXAMPL

Labelling of protective devices, switches and terminals - EXAMP


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RETURN

Erection Methods

Routing of cables in prescribed zones


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RETURN Routing of cables in prescribed zones


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Visual Inspection - Interactive Guide

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