I have a number of brass fittings in a common parts of recently decorated west london property.

ECR they had done gave this a code 2 / which i agree is probably
correct?

some fittings lack any cpc. although further investigation may prove that cpc can be achieved by either fly leads from conduit etc ( may of been left out when numb nuts put fittings on) or if not conduit and no earth present am i left with letting the management company have the pleasure of
1. removing brass and fitting pvc and labelling db circuit as no earth etc
2. rewiring/ install cpc

or is there any other way out?
just after some miracle really.

any ideas?

thanks

any takers on this one?

appreciate it

Well you could test for Zs at the ceiling; if OK then rewire the chandelier with a 3-core flex - you can get the old-fashioned braided flexes easy enough.... I've just done a day/night wired lead-crystal chandelier with 4-core and even that wasn't hard to get.

In the past i've drilled and tapped M4 holes in the ceiling boxes to get a flylead connection...

see best practice guide 2 page 6 & 7

as far as i can tell as long as under 1meg between phase conductores and exposed conductive parts not accesible. a label stating no cpc is ok and fit rcd if in doubt! guidance, best practice guide issue 2 page 9?

That can't be right, surely?
- Andy.

Agree with Andy, that makes no sense whatsoever. Are you suggesting its ok to have no earth to a class 1 fitting? Why would an "rcd be fitted if in doubt"?

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Not 1 megohm - it's 1 ohm - effectively it's telling you it's earthed if you read less than 1 ohm between the luminaire and the installation MET.

Assuming this test fails, and IR testingis OK, essentially you need to determine if there can be simultaneous contact between these brass fittings and any exposed or extraneous conductive part - if no, they you may proceed to leave them unearthed but you would be strongly advised to put in 30mA RCD protection.

Regards

OMS

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