Dead short

[Jel]

When carrying out a EICR the lighting circuit will show a dead short if you have forgotten to disconnect a lamp somewhere. Is there anyway of getting a true reading without removing all of the lamps?

 

[trev]

Short answer , no

 

[ipf]

Dead short answer.......NO

 

[Guitarist]

Unless you are Mr Bean. Think he shot his lamps with an air pistol instead of turning them off. That would do it.
(Guitarist in no way condones the use of air pistols as a way of turning off lamps)

 

[telectrix]

too inaccurate. use a rifle.

 

[vernam616]

leave the switch in the off position?

however not then a true reading as you wont have tested the IR of the switch line

 

[telectrix]

a compromise would be to test L-N, L-E, N-E with switches off, then short L/N and test to E with switches on.

 

[Crosswire]

You could do both live conductors to earth, but of course this would not give a L-N IR. BTW with downlights you would also have to remove the transformers....

 

[Guitarist]

It IS very hard to remove lamps tho :ihih:

 

[GLENNSPARK]

leave the switch in the off position?

however not then a true reading as you wont have tested the IR of the switch line

exactly.....strappers to be tested in both directions n all.....

 

[telectrix]

it is with those GU10s where you need to pull the fitting out to remove the lamp.

 

[GLENNSPARK]

You could do both live conductors to earth, but of course this would not give a L-N IR. BTW with downlights you would also have to remove the transformers....

and you'd be agreeing this with the client n all before any 'limited testing' is carried out.....

 

[Guitarist]

it is with those GU10s where you need to pull the fitting out to remove the lamp.

Time for Mr Bean...

 

[i=p/u]

id say you as the inspector would decide this, and if you had coppies of other cetificates and didnt want to disrupt service to building, you could plough on and catch it next time

 

[Jel]

You could do both live conductors to earth, but of course this would not give a L-N IR. BTW with downlights you would also have to remove the transformers....

You can state in limitations no L-N testing on EICR.

 

[GLENNSPARK]

but you still need to consult the person ordering the test....and any other interested parties beforhand......

 

[telectrix]

easy " OK, mr. client, i''ll remove all the lamps and transformers, test, then refix them. that will add £300 to your bill". i know what the answer would be.

 

[i=p/u]

if they are involved...... can you tell im gn3'D out..... aye ... roll on 15th march 2391 your hammered

 

[GLENNSPARK]

as long as you have consulted the person ordering the test first......just covering your arse here.....so no one can say'well he didn't perform the full test'....or something like that.....

 

[Jel]

The thing that always worries me if it will start tripping when i put new CU. Do you risk it for a biscuit, and waste time looking for a dead short after, or waste time removing lamps and transformers (especially them lovely Auroa bathroom downlights that people love to mastick around and end up brining down half the ceiling when trying to remove one!)

 

[trev]

Do it right, do it once mate

 

[Guitarist]

As lamps are a consumable, they should all be removable for changing by a "non-competent" person. You could always offer 2 quotes, one where you remove the lamps and another where the customer takes them all out for you. That way, they can see just how long it takes... :teeth_smile:

 

[GLENNSPARK]

yep....going round de-lamping...wireing out dimmers and dropping smokes n heats.....all adds up......