to duct or not to duct -underground cables?

[turningtim]

Im thinking of re-building our drive and adding lights to the gates, my inclination is to bury duct now and do lights gates etc later to spread the costs abit. If I use 50mm polypipe (nice 5m lengths) would I still need to use armoured (SWA) cable or -as its protected would ordinary (cheaper easier to use) T&E be ok? One end would be in the garage attached to the house the other terminated in the light fittings

many thanks

 

[ColJack]

with polly pipe you need to use SWA cable or one with a metalic sheath for protection ( AliTube etc.. ).

if it was a metal conduit then you could use normal cable, but it's easier to just use SWA..