Power for Pond pump and multiple external lights.

[paulw]

Evening all, just wanted to run a customers ideas by you and if my thoughts are correct with regards to wiring.
Customer is having his garden landscaped and is looking to install 3/4 standalone lights, as well as a pond pump with its own mini lighting system for the water feature.
My thoughts were:-
2.5mm swa to external double socket for the pump and water feature lighting (protected by 6amp plug), taken from RCD house ring main via a fused spur for switching.
1.5mm swa for new radial to standalone garden lights around garden edging, taken from rcd protected lighting circuit in the house.
Any thoughts or suggestions would be good.

 

[LankyWill]

This would work but I try to avoid outside and inside circuits as much as possible. Can you reach the cu? Saves all the hassle of fiddling about in the dark on a wet December.

 

[paulw]

My thoughts too, although CU is dead centre of a relative new build and customer is wanting to avoid that additional work if possible (house designed to his spec). It has a few spares for two new circuits too which would have been ideal. My thoughts were with the external pump and feature lights being via a fused spur, the worst case is the standalone lights knocking out the downstairs lighting?

 

[paulw]

or alternatively, could i also use a spur as a means of isolation for the external lighting to also protect the internal circuit from any potential external fault?

 

[Taylortwocities]

or alternatively, could i also use a spur as a means of isolation for the external lighting to also protect the internal circuit from any potential external fault?

If its a relatively new build, then the circuit you spur from will be RCD protected, so a fault on the outside circuit(s) will trip the internal RCD and disconnect anything on that RCD. Use a double pole FCU, and then you can isolate the outside if needs be.

Consider a garden switch box, maybe a remote controlled one (Blagdon/Wisebox). That makes the switchery easier.

 

[paulw]

excellent, think my thoughts on this in general were correct. thanks.