How deep?

[rocker]

Hi, does anyone know how deep I should dig down to install some bollard lights in a garden? All I can find in the BRB is 'a reasonable distance', but what's reasonable!? Probably going to go down the rigid PVC conduit rather than armoured cable route.

Any help appreciated.

 

[telectrix]

i suggest about 1ft, with warning tape " buried cable." i assume supply to this is RCD protected

 

[Amp David]

Deep enough so that a garden fork or spade won't hit it. Cable at 450mm with warning tape at 300mm