by BLAKEY1963 »
Thu Aug 02, 2007 7:57 pm
[quote="peterconnolly"]Hi,
As a new Part P person (still green) I am looking at replacing a consumer unit. I have checked the main bonding to the water and gas. The clamps were a little corroded and will be replaced. However I suspect there is a bigger problem that could cause a major problem. Both are 6mm cables rather than the regulation 10mm.
Replacing them would be a rather major job with liftting floor boards and even pulling out section of the kitchen.
Would any of the experienced sparks please provide and advice or guidance.
anks in advance.[/quote]
PETER CONNOLLY
WHEN DOING CONTINUITY OF MAIN EARTHING AND EQUIPOTENTIAL BONDING CONDUCTORS , THE READING OBTAINED
MUST BE NOT BE MORE THAN 0.05 OMHS.
PERSONALLY IF I AM DOING MY OWN WORK AND SELF CERTIFYING
THE INTEGRITY OF THE EARTHING CONDUCTORS ( NORMALY USED FOR
PROTECTION AGAINST INDIRECT CONTACT I E EEBADS )
I INTERPRET SIZE OF CONDUCTOR REQUIRED FROM BS7671.
U HAVE SAID 10 MM2 , AND NORMALLY UP TO 35 MM2 TAILS IT IS.
BASICALLY 10 MM2 I WOULD INSTALL , TO BS7671.
THERE R NORMALY WAYS USING MINI TRUNKING ECT DOWN EDGES OF WALLS TO ACCOMADATE CABLES RATHER THAN UPHEAVAL OF TOO MUCH KITCHEN AND FLOOR BOARDS.
IT IS A NIGHTMARE IN A OCCUPIED HOME BUT PERSONALLY I WOULD FIND A WAY TO INSTALL.
BLAKEY1963
