Hi. I wonder if someone can advise.
I want to take a 4mm SWA from my house, outside some 6m, to the brick built garage. Here, I want to put a 40A/30mA RCD MK weatherproof consumer unit. I want to replace the 16A and 6A MCBs (that come with CU) to a 16A and 20A MCB. Is this ok? Will the...