D
drew35
Need a little advice on this one.
I rewired a house last year, all sorted and signed off, but I was told I would be coming back as there was a new extension planned. Unfortunately the building contractor would only use their own electrician so I lost the extension work, no worries. The customer has put lots of other people my way so he's worth his weight. He asked me just to cast an eye over the electrical work, and certificate as he wasn't one hundred percent with the finished job. Its not the tidiest job but it ok, except.
The main cut out had to be moved by the supplier to a new meter cabinet on an outside wall. The csu was then reconnected via a switch fuse using three core 16mm swa cable. The 16mm line and neutral obviously go straight into the csu. The earth cable runs to a main earth terminal block, but then steps down to 10mm before entering the csu.
This was done, according to the certificate, to satisfy 542.3.1, earthing conductor sized in relation to the neutral as its PME. I've not seen this done before, is it sized properly seeing as for most of its run the earth conductor is 16mm, the same as the line and neutral, all but for the last 500mm?
Cheers.
I rewired a house last year, all sorted and signed off, but I was told I would be coming back as there was a new extension planned. Unfortunately the building contractor would only use their own electrician so I lost the extension work, no worries. The customer has put lots of other people my way so he's worth his weight. He asked me just to cast an eye over the electrical work, and certificate as he wasn't one hundred percent with the finished job. Its not the tidiest job but it ok, except.
The main cut out had to be moved by the supplier to a new meter cabinet on an outside wall. The csu was then reconnected via a switch fuse using three core 16mm swa cable. The 16mm line and neutral obviously go straight into the csu. The earth cable runs to a main earth terminal block, but then steps down to 10mm before entering the csu.
This was done, according to the certificate, to satisfy 542.3.1, earthing conductor sized in relation to the neutral as its PME. I've not seen this done before, is it sized properly seeing as for most of its run the earth conductor is 16mm, the same as the line and neutral, all but for the last 500mm?
Cheers.