G
Gavthesparky
I am quoteing to change an old consumer unit to 17th edition on a TT installation. I have checked the regs and it looks like the preffered option is to give added protection by changing the 100A main switch to a 100A 100mA RCD together with the 30mA RCD protection already in the board. Firstly is this correct or havr I miss read it? and secondly I believe (though I will have to double check) that the supplier or previous sparky has fitted an RCD as an isolation device before the board. I have no idea of its age so should I rely on it. I geuss testing it both manually and electronically will give me that answer?
Many thanks in advance
Many thanks in advance