IET logo
Decrease font size
Increase font size
Topic Title: Isolation
Topic Summary: Power to shed
Created On: 20 March 2017 08:34 PM
Status: Read Only
Linear : Threading : Single : Branch
Search Topic Search Topic
Topic Tools Topic Tools
View similar topics View similar topics
View topic in raw text format. Print this topic.
 20 March 2017 08:34 PM
User is offline View Users Profile Print this message


Posts: 63
Joined: 29 June 2015

Just checking
Spurring of a utility room socket with a 4mm T&E then a 2.5 SWA (31amps) via a wiska box to a shed 1 meter other side of the outside wall, feeding 1 x double socket and a 3amp fuse for lights.

Question: Do I have to have an isolation switch in the utility room?

PS (no extraneous parts in the shed)

Thanks for any thoughts!
 20 March 2017 08:47 PM
User is offline View Users Profile Print this message


Posts: 7042
Joined: 27 December 2005

It would be common sense to have double pole isolation. You can easily get water into things in the shed / garden, which can lead to tripping of the house supply. An isolation switch makes it easy for the homeowner to disconnect everything liable to be damp, so they can then reset the RCD affecting things in the house.


 20 March 2017 10:02 PM
User is offline View Users Profile Print this message


Posts: 10062
Joined: 22 July 2004

regs dont require it, but a fused spur with a DP switch may be a jolly good idea, just in case the shed blows away one dark and stormy night...

not exactly expensive if you are putting a spur in anyway.

for example

not sure if you really need 4mm, one double socket would normally be a 2.5mm spur.

regards Mike

New here?

See Also:

FuseTalk Standard Edition v3.2 - © 1999-2018 FuseTalk Inc. All rights reserved.