Help please! Cheers guy!!

cagedanimal2010 · Nov 1, 2010

had a play about today, defiantly the rcd main switch, interesting as iv not seen this before, you learn something new every day!!

IQ Electrical · Nov 1, 2010

I'm having that one!

We never stop learning in this business!

Sparky Ninja · Nov 1, 2010

I explained this exact situation to my NICEIC assessor a few weeks ago. He just frowned at me, I guess he learnt something himself that day.

cagedanimal2010 · Nov 2, 2010

i explained it to the napit assessor today and he said its becoming a lot more regular these days with all the split-loads going in!

IQ Electrical · Nov 2, 2010

cagedanimal2010 said:
i explained it to the napit assessor today and he said its becoming a lot more regular these days with all the split-loads going in!

It's true, also, the amount of Zs tests performed on the 'no trip' setting for rcd protected circuits will be increasing rapidly, along with the inaccuracy that we get with that type of measurement!

cagedanimal2010 · Nov 2, 2010

almost makes you think zs tests on these type of circuits are pointless.....

IQ Electrical · Nov 2, 2010

cagedanimal2010 said:
almost makes you think zs tests on these type of circuits are pointless.....

Yes, on periodics, we frequently find that Zdb+(R1+R2) is more accurate than a Zs test on 'no trip' and that goes for our 2 Megger MFT's and a Fluke 1653.