In the process of quoting and pricing a job for an outbuilding which is to be used to cut hair on a part time hobby. This outbuilding will have a 7.5kw shower, Lighting circuit consisiting of 2 lights, and a ring circuit with a couple of sockets. The supply will be from a 63 amp swich fuse in 3 core armoured run along the outside of the building and then cantinary wire from building to shed. Total run approx 25meters. It is a tns supply 100 amp fuse. Just a few questions that some wise people may be able to help me with.
1. Been doing some cable calcs deciding 10mm/16mm 3 core swa, What reference method would you use as this would effect ccc.
2. I was thinking of exporting the earth as it is a tns system, but would it be better to make the shed a TT.
3. The shower is the issue here as the i do not think the customer understands why cable has to be so big(expensive) just to use a shower. Can anyone suggest an alternative Ie lower kw shower, or something like a little storage tank that can provide instant water. I have seen the ones for washing hands and i understand this is not a plumbers forum but just after a bit of advice.
1. Been doing some cable calcs deciding 10mm/16mm 3 core swa, What reference method would you use as this would effect ccc.
2. I was thinking of exporting the earth as it is a tns system, but would it be better to make the shed a TT.
3. The shower is the issue here as the i do not think the customer understands why cable has to be so big(expensive) just to use a shower. Can anyone suggest an alternative Ie lower kw shower, or something like a little storage tank that can provide instant water. I have seen the ones for washing hands and i understand this is not a plumbers forum but just after a bit of advice.
