certification

[2391bob]

Need you're help on issuing a cert. In september last year i did a PIR on a property and all inspection and test results were well within spec.Since then I have recently installed a new CU and on testing i now have a N-E IR fault on the lighting circuit. Out of goodwill and no charge I have spent a day trying to locate the fault and have put this down to a short or cross connection at a JB located within the ceiling etc etc. Just on the IR point all loads dimmers everything possible were disconnected and just to double check a 250V test was also carried out with phases to earth conductors were disconected from the CU main switch isolated. What i want to know is if i can still issue an EIC on completion if the lighting circuit is not protected by an RCD as the owner is not willing to rectify the fault as they are saying i should of known about it???? Any ideas or help greatly appreciated.... Back to the cert can i issue one if so what do i state on it???What's rhe N-E fault IR test results?

 

[MWE]

What's rhe N-E fault IR test results? .000 METREL 61557

 

[tony mc]

You really need to come off IR testing range and see what the reading is when set on Ohms as on the IR range it will not read anything under 10000 Ohms it will just give you 0.00

When fault finding this will give you a better idea of where to look on the cct as the nearer the fault the lower the reading will be.
230/0.03 = 7666 Ohms

So if your reading is around that or lower there is a good chance the RCD will not hold.

Hope that makes sense