I wired a db for a friend, we used 4mm2 twin and earth for 70m distance protected by a 35amp cb. I allready know the cable is to small for the voltage drop over the distance.But with no load i measure 212volts and 11 volts on the neutral. The elevated voltage on the neutral is what is bothering me. and also as soon as i put the plugs or aircon breaker on the voltage drops to less than a 100volt but there is no load so there should not be a vd????
Any help would be appreciated.