Summer house power supply 50 metres away

[Guest55]

I would think that it is likely that the SWA would need RCD protection in this case.

why is that ?

 

[Richard]

Presuming you were suggesting protecting the submain with a B32 BS60898, then the maximum allowable Zs for that circuit would be 1.15ohm. I would be suprised if you could achieve a stable Ra to get that.

The Op's original idea of protecting that submain with a 100ma s type followed by 30ma in the summerhouse would be better IMO.

 

[Guest55]

Presuming you were suggesting protecting the submain with a B32 BS60898, then the maximum allowable Zs for that circuit would be 1.15ohm. I would be suprised if you could achieve a stable Ra to get that.

The Op's original idea of protecting that submain with a 100ma s type followed by 30ma in the summerhouse would be better IMO.

Youre right , i read it wrong.
oops lol.

 

[Richard]

Well, hopefully the OP will spot the problem when he comes to test it. Hmmm, we'll see...