Over here, I've just done few rural jobs with customers having already run sub-mains to out-buildings, before I get there.
And they generally just want then hooked up at each end, so to speak.
But, this is sort of got me worried, because 9 times out of 10, the underground cable(normally 2.5 or 4.0mm 2C+E)is run through a length of black alkathene water pipe(it's used for irrigation systems on farms)and buried and the trench back-filled.
What worries me is that, some where I heard that alkathene is known to react with the chemical composition of PVC.
In some cases I have even asked that the cable be dug up and run in PVC conduit and this does not normally go down too well!. [Linked Image]
Have any of you guys ever heard of this chemical problem?.