Likely bigger, 6mm or 10mm more likelyI don't know about the legality but you may find it difficult to feed the 2.5mm cable in
Likely bigger, 6mm or 10mm more likely
Ah my apologies, I assumed the Op was ditching the shower and planning on just using the supply cable to feed a socket.Sorry, yes I meant difficult to feed in the 2.5mm required for the new spur.
In essence there is nothing to stop you adding a socket to that circuit. Adding a 2.5mm² solid into a terminal with 6 or 10mm² stranded it not usually a problem as long as there's space for it. You could always pull the current T&E out of the switch and temporarily fit a 60A or bigger junction box.Sorry, yes I meant difficult to feed in the 2.5mm required for the new spur.
I assumed not so never thought to ask that questionIs the consumer unit in the same cupboard? Simply spur off the existing socket RCBO there. 2.5mm² cable.
Simples!
PS Why are the lights not on an RCBO, like the rest of the circuits?
I'd assume they were wired under the 16th edition when RCD protection for domestic lighting circuits was not required and often considered undesirable.PS Why are the lights not on an RCBO, like the rest of the circuits?
Your supposition is presumably particularly true if its going to a socket [with, inevitably, no greater than a 13A fuse into any plug(s) inserted into the socket] - and, for that reason, also compliant with regs.Seems to go against the grain having a 2.5mm2 cable on a 40amp circuit, but I suppose it would take some doing to overload it.
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