Hi, I have a job coming up to replace a CU. It has failed a few tests so has to be replaced. It is a large house and the board is a two tier one so will replace with similar. Whilst surveying the old board I noticed two 63 amp mcb's one supplying an extension to the house this has a ring and lighting in it so could be down graded to a 40 amp. The other one is feeding the garage via a 16mm swa, on inspection I found that the garage has a CU in it which feeds a ring, lighting and heating and filtration for the swimming pool. The SWA surfaces at the house close to the meter cupboard. My question is can I terminate the swa in the meter cupboard using an adaptable box and a small 80 amp switch. The wylex etc are all to big to fit in a meter cupboard.