Power to shed. Thoughts?

davesparks · Jun 23, 2017

DavidSpark said:
To be honest I am not 100% sure on the rules behind exporting the PME, I was under the impression it wasn't allowed? .

What has given you this impression?
Do you do all of your installation design based on impressions and myths?

Octopus · Jun 23, 2017

Just work to the 18th Ed - export the earth AND install a rod...............

telectrix · Jun 23, 2017

now, now, murdoch. you don't export it, you just extend it.

[ElectriciansForums.net] Power to shed. Thoughts?

Leyland30 · Jun 23, 2017

As Tomspark mentions - if the 'bar' will only be a small load and it is a pain to route the SWA, then run from a FCU in the house spurred off skt ring. There is a IET Wiring Matters regards this very arrangement - see attached.

Otherwise, unless there specific bonding requirements in the shed i.e. copper water pipe, Jacuzzi; then run a 3C SWA (suggest > 2.5mm^2) - no need for a dedicated rod. (Subject to how far away 'bar' is from house ideally less than 10mtr)

DavidSpark · Jun 23, 2017

Leyland30 said:
As Tomspark mentions - if the 'bar' will only be a small load and it is a pain to route the SWA, then run from a FCU in the house spurred off skt ring. There is a IET Wiring Matters regards this very arrangement - see attached.

Otherwise, unless there specific bonding requirements in the shed i.e. copper water pipe, Jacuzzi; then run a 3C SWA (suggest > 2.5mm^2) - no need for a dedicated rod. (Subject to how far away 'bar' is from house ideally less than 10mtr)

Excellent reading! Thank you for providing it, and your advice.

buzzlightyear · Jun 23, 2017

this site is like Tesco's, every little helps.

buzzlightyear · Jun 23, 2017

where is my points post 31

Simon1979 · Jun 24, 2017

Henley block in the meter box and add a 2 way garage cu. SWA from there.

davesparks · Jun 24, 2017

Simon1979 said:
Henley block in the meter box and add a 2 way garage cu. SWA from there.

That's hardly a sensible installation design is it.

Simon1979 · Jun 24, 2017

IMO better than spurring from downstairs ring (where applicable). Most home owners want more than just one socket outside eventually so why just give them one when you can have a dedicated radial on its own RCBO. Easier than punching holes in walls through utility rooms too.

davesparks · Jun 24, 2017

Simon1979 said:
IMO better than spurring from downstairs ring (where applicable). Most home owners want more than just one socket outside eventually so why just give them one when you can have a dedicated radial on its own RCBO. Easier than punching holes in walls through utility rooms too.

At least if you spur from the ring you don't leave the installation without a single main switch!
But in all seriousness I don't particularly condone installing a shed supply from a ring either.

Your solution doesn't show any consideration for discrimination. And this thread isn't about installing a single outdoor socket, it's about a submain to a shed.

Just because something is easier it doesn't mean it is the best installation design.