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minor works


paul b b

Question

hello chaps,

if you add a light on to a circuit do you IR test the whole circuit or just the cable you install?

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16 answers to this question

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is L+N to earth ok on an EIC form?

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is it ok to do l&n to earth on the lights after a consumer unit change so all the bulbs dont have to removed. if so, what would be written on the EIC (niceic version)? cheers wayne

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entire circuit. normally L-N to earth though

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l-n to earth... ok 2 questions

1. is this to protect things?

2. is this just a case of l-n in same connector block?

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1: yes

2: just short L and N at some point. just whatever method is easiest. sometimes both into same croc clip, connector block, bit of wire etc

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would you need to take all lamps out with a l-n to earth?

what do you put on the cert?

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1: no. thats why you short L-N

2: reading for live - earth, LIM for live/live

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ahhhh thanks andy.

i will add to your rep

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so i can test at 500 with out having to take loads od gu10's out and unpluging the tranny

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is it ok to do l&n to earth on the lights after a consumer unit change so all the bulbs dont have to removed. if so, what would be written on the EIC (niceic version)? cheers wayne

1: yes

2: see post 6

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Thanks andy. is this 100% alright, ie infornt of an elecsa assesor.

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Thanks andy. is this 100% alright, ie infornt of an elecsa assesor.

yes. if he asks why L-n to E, just explain its to avoid damaging any load that may be connected to circuit

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wont 500v blow the bulbs unless disconnected trannys bulbs etc or test at 250v ??

As Andy said..

Thats why you test with Live & Neutral joined and just go across (L-N) and (E),

so you don't damage any equipment vunerable to testing...

Page 83 on site guide..

10.3.3 Ins Res test

paragraph '2' under point 'b'

about half way down the page!;)

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Good to do that on consumer unit changes when everthing is plugged in. I usually do it at 250v sorts out if you have anything faulty on circuit. Also on callouts for tripping RCD's that way it tells if its equipment or wiring.

Batty

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wont 500v blow the bulbs unless disconnected trannys bulbs etc or test at 250v ??

with l-n shorted, there is no voltage accross the transformer (expect to earth, but transformers are DI anyway)

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