In article , Tim Lamb
wrote:
In message , John
Rumm writes
On 02/01/2018 07:25, Handy Andy wrote:
On 01-Jan-18 6:34 PM, John Rumm wrote:
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.



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?

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

--
from KT24 in Surrey, England