OP
Octopus
Currently doing house renovations and have taken all the plaster/render back to blockwork and removed ceiling in kitchen revealing all the existing electrics, i have a couple of issues with the electrics i need clearing up before/if i have to call an electrician in before i can carry on work.
1. Firstly we have a PME TN-C-S System 60/80 415v supply and from what i have read (wiring regs and other literature) Reg 544.1.1 Table 54.8 says if the supply neutral conductor is less than 35mm2 or less the minimum main protective bonding conductor should be a minimum of 10mm2, the problem is i cannot see any markings of the earths size on any of the wire and don't know if there is any way of telling from measuring the thickness of the sheath but from what it looks like (pic below) the small section of earth from the supply to main earth terminal looks like 16mm2 and from the main earth terminal to consumer earth terminal and from there to gas and water it looks like 6mm2, if it is 6mm2 which i'm sure it is as i have compared it to a bit of marked 6mm2 wire i have then is this ok to leave as it is or should i have it upgraded to 10mm2 ?.
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2. Secondly there is a single switched socket under the worktop kitchen sink (drainer side) obviously for a washing machine/ dishwasher, its where we are going to have our washing machine. I've noticed this socket in not a spur and is a ring main socket straight from another ring main double socket, my question is if we are going to use this for a washing machine should there be a isolating switch or FCU wired before the socket above the worktop?.
Let me ask you a question - are you in England or Wales? and if so how are you proposing to deal with LABC?