(Original post by InterCity125)
A long shot I know but,
We are planning to install a 'home office' in the garden shed. In terms of wiring how should I do this to run:
A few storage heaters
The Run from the house will be about 150m - so there will be some voltage drop.
What cable size from house to shed ??10mm??
What Amp rating RCBO/MCB is needed in the fuse box?
Are additional RCDs needed in the shed?
If anyone knows please let me know.
Seriously if you don't know you should really get an electricion to it. Electrics are dodgy. For starters the cable going to the shed has to be in special weather proof trunking. I am not sure what amp the fuse as to be in the house, but you can probably work it out. Additional RCDs in the shed would be a safety feature and I have a feeling it may be required by law.
The wiring regulations are constantly updating, the book I have is 1987 so its to out of date to be any use.
When wiring the shed make sure you use earth insultion on the bare earth ternimal in the cable when connecting lights, sockets and plug sockets etc. The lighting and ring main must also be on seperate circuits although you may be able to get away with running the lighting on the ring main providing they have their own fuses.
I would have a fuse box/circuit breaker in the shed and from this run a low amp lighting circuit and a higher ampage ring main form it.
You really need to speak to an electrition though even if you do wiring yourself make sure you get it inspected by a qualified spark.
Messing about with this stuff is dangerous, the most i have done is extended the ring main, I would never wire a new circuit into the fuse box etc. I have wired our alarm but I ran that of the lighting circuit and had a seperate fuse to it (this is legal).
[B]PS I would speak to an electrion before I even attempt this myself, there is probably a lot more to it than what I have said.