I am fitting a Triton 9.5 KW shower. I am replacing the old circuit of 30A cartridge fuse and 6mm twin & earth direct to old 8.5 KW shower.
I will be replacing the 30 A cartridge fuse with a 45A MCB Wylex plug in type. Then taking 10mm twin & earth from 45A MCB in CU to a Wylex Fully Insulated...