Wiring up socket at bottom of garden

[Shaun matthews]

Hi
I want to put a socket about 40 metres down my garden , to run a lazy spa hot tub , I have bought 4mm armoured cable would this be sufficient and what mcb would be best a 20 or 32 amp

 

[davesparks]

How about the volt drop though wouldn't that affect the earth aswell with the distance from the house

Please explain what you mean by this?

 

[marcuswareham]

In the past when I installed a supply for a hot tub I would just install earth rods as advised in the note in the regulations concerning outdoor pools.

I've seen many of them come through with tours in the local theatre which are broken, or damaged by mishandling.
The other problem is that once they are well used they wear in such a way that they can be connected incorrectly and short L-E etc. I believe this is the hidden reason behind Neutrik discontinuing the true 1 connector.
Which is another good reason not to fit them, they are discontinued!

Fair enough about the discontinued, I had not realized that I just get given them by hire companies. , I have not found them to brake anymore than any other connector really. That is a fair point on the risk of connecting worn ones incorrectly thats true they can go that way, the method I mentioned could be any connector, true1 was just what popped into my head

 

[Shaun matthews]

Please explain what you mean by this?

Well with the cable being 40 metres long , there would be a volt drop in the supply , wouldn't there be a chance that the earth could become live ,

 

[davesparks]

Well with the cable being 40 metres long , there would be a volt drop in the supply , wouldn't there be a chance that the earth could become live ,

I still don't understand, how will voltage drop cause the CPC to become live?
Voltage drop will cause the voltage between L and N at the far end of the circuit to be reduced, it won't disconnect the CPC and reconnect it to the line!