Top to bottom, 70mm² 25mm² 16mm² 10mm² (3 phase) 6mm² sheathed, 2.5mm² sheathed, 4mm² Solar DC, 3 x 2.5mm² flexible plus a dangerously cracked and brittle 16mm² main service from a 1960s house.
Some weeks ago, I explained why the voltage in a long cable will drop over its length, and how this affects solar installations that are a long way from the switchboard. [Read more…]
Currently Raging Debates: