IR test on florry without disconnection

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norv

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Just a quickie, Can you do an insulation test on a fluorescent light at 250V without disconnecting it with P+N joined together. Can you do it at 500V aswell without disconnection ?

Guiness Drink

 

Admin1

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Funnily enough - That is the very question I asked my Lecturer on Monday last. And his reply was No, you just disconnect the Phase.

Do you guys agree with that?

 

norv

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Cheers for that Admin. The problem with the florrys that are fitted already, they are pre-wired with wires that push in between 2 pins, that sort of cut the insulation & make the connection (if you know what I mean) & then you just wire the t&e into the term block.

I dont fancy having to go round & disconnect each one, there are quite a few & some of them are quite high up.

 
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Norv

In an ideal world you would do as colllege lecturer says but if they are high up I would test p/n to earth on insulation resistance although if you are doing a pir you are going to have to get up to them to do a continuity test anyway but if possible you may be able to do it on a wander lead and only test loop at furthest fitting.

batty

 

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Funnily enough - That is the very question I asked my Lecturer on Monday last. And his reply was No, you just disconnect the Phase.Do you guys agree with that?
Checking a circuit diagram of a flossy, the Boys agrees.

The Boys

(Don's out for the evening)

 

seajayess

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As batty said you can do the test between L/CPC and N/CPC but if you are doing a PIR you are going to have to take them apart to do an R1/R2 test plus Zs and hope who ever installed them did it correctly if they are high up, can be a right pain CJS

 

Mr Sworld

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Just a quickie, Can you do an insulation test on a fluorescent light at 250V without disconnecting it with P+N joined together. Can you do it at 500V aswell without disconnection ?
Can I ask why you need to test that far? I would test up to the switch and note on the test certificate that the florries were untested.

I am assuming this is a periodic.....

 
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I have to admit Steptoe is correct and your lecturer is wrong ( their only human ( well some of them ))

I advise you read Guidance note 3 which tells you to join L & N and to test between these and E at 500V. No damage will be done and this test should be noted on the paperwork.

 
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