Morning all, apologies if this one has been done but I can't find it and I can't get hold of my electrician at the moment.
Situation- digger man coming a week early to dig out the driveway. While he's here I want him to dig me a trench for SWA to the garage. Question- how much current capacity should I provide for the garage (6m x 9m)
I'll need lighting- either fluorescent or similar with a PIR flood outside (that'll be LED or something low energy)
I'll need power- 32A ring was the plan, heaviest power consumption at the moment is the MIG, there will be other stuff but no really high draw items.
Doncaster Cables volt drop calculator thing tells me 10mm 2 core SWA will go up to 32 amps (garage is 56 metres from meter in house), more than that I'll need 16mm. Supply arrangement to house is TN-S as far as I can tell.
Is 32A adequate for a 4 way CU with 1 x 5A (lighting) and 1 x 32A (ring main) backed by (presumably) 32A MCB a the CU in the house or do I need to go the next step- 45A MCB in the house and 16mm SWA to the CU in the garage.
Cheers
PS Before anyone asks, I'm not planning on wiring the thing myself- all I need to know right now is what size supply cable to bury under the driveway (at about 400 in sand with marker tape and a lot of old bricks above the 150mm clean fill above the cable). And is 2 core SWA still acceptable (using the armour for ground) or do I have to use 3 core? )
Situation- digger man coming a week early to dig out the driveway. While he's here I want him to dig me a trench for SWA to the garage. Question- how much current capacity should I provide for the garage (6m x 9m)
I'll need lighting- either fluorescent or similar with a PIR flood outside (that'll be LED or something low energy)
I'll need power- 32A ring was the plan, heaviest power consumption at the moment is the MIG, there will be other stuff but no really high draw items.
Doncaster Cables volt drop calculator thing tells me 10mm 2 core SWA will go up to 32 amps (garage is 56 metres from meter in house), more than that I'll need 16mm. Supply arrangement to house is TN-S as far as I can tell.
Is 32A adequate for a 4 way CU with 1 x 5A (lighting) and 1 x 32A (ring main) backed by (presumably) 32A MCB a the CU in the house or do I need to go the next step- 45A MCB in the house and 16mm SWA to the CU in the garage.
Cheers
PS Before anyone asks, I'm not planning on wiring the thing myself- all I need to know right now is what size supply cable to bury under the driveway (at about 400 in sand with marker tape and a lot of old bricks above the 150mm clean fill above the cable). And is 2 core SWA still acceptable (using the armour for ground) or do I have to use 3 core? )