apprentice87

floor area for a cct was ony ever a meaningless recommendation, your ctt limitation is, and will always will be Zs for the cct

There is absolutely no Regulation in BS7671 which states a ring final must not exceed a floor area above 100m sq, that is a fact. As for...

So no factory has a floor area at any part of its site not exceeding this 100m sq. I have installed multiple ring final circuits in...

You cannot use 13A sockets on a ring final circuit in a factory, they must be radials using BS4343 sockets. Where is this pearl of...