I'm curious to know what the requirement in Ontario and Canada is on the use of a reduced sized neutral conductor on Residental Services. My interpretation of Rule 4-022 (1)+(2) is that it is permitted and it also could be uninsulated as well. Realistically very little current goes through the neutral as most large loads in a house are already balanced (240V) and the 120V loads are somewhat small in comparision. Is this method acutally permitted and is it used?
