ECN Forum Forums Photo Discussion Forums Photos for General Discussion Why the Black Conductor?

I think Paul was referring to his Night-rate supply.
Heaters are switched on overnight via a contactor and are allowed to heat up (these are storage heaters with blocks of stone(?)in them to hold the heat) and are switched off again in the morning (usually about 7 or 8am), by the PoCo.
Power is cheaper on Night rate supply.