tails to 100 Amp double pole switch are 25mm and 16 mm earth. Just the outgoing to consumer unit is 16 mm twin and earth to main consumer unit with extra earthing to compensate
Is it ok to have a 100 Amp double pole switch to consumer unit with the cable in between both items being 16mm twin and earth? Does have extra earthing to consumer unit to compensate for the smaller earth in the twin and earth. Does it matter over a distance ? Be it 2 metres or 5 metres?