I am planning to rewire my small detached workshop, 6 metres by 3.3 , former garage, as the wiring is some 60 years old and has recently been shorting out the house. Project all discussed with electrician and I will do the first fix work and he will do all the wiring and certifying .
Installation consists of 5 overhead LED tube lamps; surface mounted 20mm plastic conduit with ten metal clad double sockets at low, middle and high levels; two external lights - two way switched from the house; all run from a new 6 way Hager consumer unit. Five active circuits and one spare, which I might use for two low level heaters in winter.. Possible future addition might be a dust extraction unit- SIP or similar.
I'm strictly an amateur woodworker with very limited power tools but do have a SIP ten inch table saw with induction motor.
Two or three questions please:
How do I work out what size of breakers to fit in the consumer unit, and should they be RCD or MCB units ?
It seems sensible to plan a low level 16amp socket for the table saw, and possible future bandsaw. Should this be on its own separate circuit ?
Power will reach the garage via a sub main cable run from the main house consumer unit to this workshop CU. House supply is 100 amp three phase. Most of the submain cable will run below a concrete balcony slab and doesn't need to be buried. Can I use a suitable cable in conduit or does it need to be a SWA. ? The cable run is about 25 metres
Installation consists of 5 overhead LED tube lamps; surface mounted 20mm plastic conduit with ten metal clad double sockets at low, middle and high levels; two external lights - two way switched from the house; all run from a new 6 way Hager consumer unit. Five active circuits and one spare, which I might use for two low level heaters in winter.. Possible future addition might be a dust extraction unit- SIP or similar.
I'm strictly an amateur woodworker with very limited power tools but do have a SIP ten inch table saw with induction motor.
Two or three questions please:
How do I work out what size of breakers to fit in the consumer unit, and should they be RCD or MCB units ?
It seems sensible to plan a low level 16amp socket for the table saw, and possible future bandsaw. Should this be on its own separate circuit ?
Power will reach the garage via a sub main cable run from the main house consumer unit to this workshop CU. House supply is 100 amp three phase. Most of the submain cable will run below a concrete balcony slab and doesn't need to be buried. Can I use a suitable cable in conduit or does it need to be a SWA. ? The cable run is about 25 metres