Hello all,
I want to add power to an outside garage i.e. not joined to the house. I have purchased a “garage kit” that contains a 2 way CU (63A 30mA RCCB, 6A & 32A MCB’s) and SWA (6mm 4 core) to take it to the garage. The garage is about 10m from the main CU; I want to power some lights, freezer, automatic door opener and a few power tools. The main CU has free space for additional circuits but does not have an RCD. I have electrical knowledge (but am not an electrician) and am always up for DIY. The council have been told about it, so is all legal. My main problem is one of choice; I have two options each with their own queries.
1) Connect the garage kit CU in the house, wire the SWA up and take it to the garage. If I did this could I use 2 cores for the 6A and 2 for the 32A circuits (using the armour for earth)? Also what would I use to terminate in the garage; could I just have a metal clad box that the SWA feeds into and 2 outputs for the lights and power or would I need an isolator (or something else)?
2) Take the SWA straight from the main CU to the garage and then connect it to the “garage kit” CU. The sockets in the garage will be RCD protected but will I also need an RCD in the house before the SWA.
Also what MCB should I place in the main CU to feed this, I was thinking about 40A (because 6A & 32A = 38A, 40A being the closest match) but the RCCB in the “garage kit” CU is rated at 63A
Any help much appreciated
I want to add power to an outside garage i.e. not joined to the house. I have purchased a “garage kit” that contains a 2 way CU (63A 30mA RCCB, 6A & 32A MCB’s) and SWA (6mm 4 core) to take it to the garage. The garage is about 10m from the main CU; I want to power some lights, freezer, automatic door opener and a few power tools. The main CU has free space for additional circuits but does not have an RCD. I have electrical knowledge (but am not an electrician) and am always up for DIY. The council have been told about it, so is all legal. My main problem is one of choice; I have two options each with their own queries.
1) Connect the garage kit CU in the house, wire the SWA up and take it to the garage. If I did this could I use 2 cores for the 6A and 2 for the 32A circuits (using the armour for earth)? Also what would I use to terminate in the garage; could I just have a metal clad box that the SWA feeds into and 2 outputs for the lights and power or would I need an isolator (or something else)?
2) Take the SWA straight from the main CU to the garage and then connect it to the “garage kit” CU. The sockets in the garage will be RCD protected but will I also need an RCD in the house before the SWA.
Also what MCB should I place in the main CU to feed this, I was thinking about 40A (because 6A & 32A = 38A, 40A being the closest match) but the RCCB in the “garage kit” CU is rated at 63A
Any help much appreciated