Only circuits that are fed by the new consumer unit will have to be tested, but depending on when the property was last inspected and tested it may be worth having that done at the same time.
Hope that helps
[quote="robber61"]Installed hanging ceiling light (with 30 x 10w bulbs) with a 300w transformer on top built into ceiling connection. I put this on a dimmer switch which blew transformer & could not get another trans the same. Got external transformer with same specs & changed ligh...
Hiya there. It sounds to me like your house is wired in a method known as loop in loop out. If you have acces to a multi meter then it is quite simple. Check there is no power to the circuit and connect the multi meter between red and black of each cable. Leave the switch open and test resistance (o...
