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Yes, an RCBO combines the functions of an MCB and an RCD. If you go down this route, you will need to fit an RCBO in each position that you would otherwise have fitted an MCB. It's the "best" solution for various reasons, but more expensive than RCDs and MCBs.Can someone tell me if i go down the route of using RCBO does that mean that it "replaces" the need for RCD's on the CU?
You can do either, but think about the situation if an MCB feeding a circuit in the flat trips and the occupier wants to reset it when the part of the building containing the CU is unoccupied. Also, if you ever want to meter the consumption of the flat separately, you'll need to have two CUs.i was thinking of using 2 CU's one for my side of the house and the other for the flat to be letted out. Is this necessary or can i just get a say 20 way RCBO board for the whole lot?
You can have two supply meters if you have a second supply to the building (at a cost). Or you can fit a private meter to the supply to the flat and use it as the basis for charging for the electricity used (there are rules about how much you can charge).handysparks.... i didn't know you could have 2 meters fitted as i'm sure a few years back i made an enquiery to the electricity board and i'm sure they said that we couldn't as it was the same dwelling! also what about all the other elements i have listed? i.e.... 2 emmersions,2 ovens, out building, etc. pls advise, many thanks in advance