SWA supply to outbuilding

Accurately measure the outer diameter and compare with the likely sizes on the TLC web site

If you follow the link for each cable type the o/d is quoted

Andrew

Snip a little bit off one of the cores and compare the size of the conductors with a known bit of cable in one of the sheds/DIY shops (B&Q etc)

Andrew/Harry

Many thanks for the excellent ideas.

Alternatively, they are all in one table here:

Full details of what you need to do are covered here:

However, if you have 6kW of load, that's about 26A total. At 12mV/A/m voltage drop (if it is 4mm^2) that puts you at about 6.9V at 25m, which is just about ok. Current carrying capacity is ample for that load.

ISTR various earlier threads about exporting earths, suitability of cable armouring for that purpose and local earth rods.

Yup that's in that article above as well.

Very useful information. Thanks for that.

The SWA route to the outbuilding is across some pretty difficult ground, so burying the cable in places is liable to be quite a problem, any views on an alternative?

ANFO ? :)

It does not have to be buried. It can fixed to any suitable structure (i.e. preferable not something "temporary" like fence panels). All you are really attempting to do it keep it out of harms way.

You could find someone local with compressed air moleing tackle.

Alternatively, if it is only concrete paths or other small obstacles, you could trench either side and then whack a length of steel water pipe through with a sledge hammer. Doesn't work too well in Herts. with our flints!

you aren't the only ones to have flints