Rules and Guidelines
Want to participate in the discussions? Please read our Community Rules and Guidelines. Need some help? Visit Support and Answers.

  • State Not Answered
  • Locked Locked
  • Replies 15 replies
  • Subscribers 33 subscribers
  • Views 4295 views
  • Users 0 members are here
Options
You may also be interested in
This discussion is locked.
You cannot post a reply to this discussion. If you have a question start a new discussion

Shed Supply From Ring Main

PG
A small (7ftx5ft) shed is to be located at the rear of a house. There will be a 2ft gap between the shed and the rear of the house.
The shed is to be used as a utility room, initially, with a tumble drier and freezer It will also have a frost protection heater and lighting.  If we allow a bit of power for future or garden tool use then there could be a max demand of about 18A. There are no other services planned (no water, gas or drainage). The 230V supply is TN-C-S
The house has a lightly loaded RFC on the inside wall by the shed and the proposal is to break into the RFC and loop the RFC through the shed. The RFC is supplied from a Consumer Unit that is located near the front of the house..
Not exactly a standard arrangement, probably wouldn’t even consider it if the shed was a few more yards down the garden but I haven’t managed to locate a statement in the Wiring Regs that precludes this approach. I wouldn’t have thought twice about extending an RFC through a conservatory.
 I wondered if the Forum thought that 465.1 (Emergency Switching) could come into force, say for isolating the shed in the case of a fire but I suppose that the shed isn’t too different from another room?

Parents
  • 0

    Hello all,

    I have tried to research my question but find confusing and predominantly old replies to similar problems.  To be sure on all counts I thought I would ask again.

    I am a joiner asked to construct a shed base, and assemble bought shed.  The main house has an interior double 13amp socket close to an outside wall. The idea is to take a spur off that socket with 1.5mm armoured cable, run it through the outside wall and onwards under decking and through a slit trench to a garden shed.  Distance to shed between 10-15 metres. Ideally then to provide a light in the shed and a couple of 13amp sockets. More ideally an all weather external socket outside the shed too.

    Note the existing consumer unit is on the wrong side of the house.

    So questions:

    Can such a spur be safely taken off that double socket ?

    If yes, can the double socket be left working or does the spur replace it (blanked off)?

    Is 1.5mm cable enough or 2.5mm better?

    Does (can?) that spur need any form of extra inline fusing (RCD?) or will the house one suffice?

    Can a spur happily deal with a light and 2/3 plugs. If so is it best run off a fused junction box as it enters the shed end? 

    Any advice much appreciated.

    Cheers

    John

Reply
  • 0

    Hello all,

    I have tried to research my question but find confusing and predominantly old replies to similar problems.  To be sure on all counts I thought I would ask again.

    I am a joiner asked to construct a shed base, and assemble bought shed.  The main house has an interior double 13amp socket close to an outside wall. The idea is to take a spur off that socket with 1.5mm armoured cable, run it through the outside wall and onwards under decking and through a slit trench to a garden shed.  Distance to shed between 10-15 metres. Ideally then to provide a light in the shed and a couple of 13amp sockets. More ideally an all weather external socket outside the shed too.

    Note the existing consumer unit is on the wrong side of the house.

    So questions:

    Can such a spur be safely taken off that double socket ?

    If yes, can the double socket be left working or does the spur replace it (blanked off)?

    Is 1.5mm cable enough or 2.5mm better?

    Does (can?) that spur need any form of extra inline fusing (RCD?) or will the house one suffice?

    Can a spur happily deal with a light and 2/3 plugs. If so is it best run off a fused junction box as it enters the shed end? 

    Any advice much appreciated.

    Cheers

    John

Children
No Data

Join us to get the best from IET EngX.

Joining EngX lets you personalise your experience so you stay up to date on the topics that interest you, plus you’ll be able to make connections who are looking to collaborate, exchange ideas and more.

Join us Not now

Community Rules & Guidelines