"David Blewitt" nospam wrote in message
...
The earthling conductor is connected to the earth bar in the CU
as it
should be. Should the outer steel armour be earthed?

The armour should be earthed at the house end.

There is no need for it to be connected at the garage end,
provided some
other form of earth is used, such as an earth exported as a
conductor
within
the SWA (which appears to be the case here) or an earth rod.

It's unusual to see SWA with an earth wire, are you sure it's not
concentric. Consentric carries the earth and the neutral in the
armouring,
with the strands that carry the neutral coated in a PVC sheath.
Typicaly
concentric will have no brass glands on each end of the cable.

Regards, Blew



Blew,

I've seen quite a few single phase runs using three phase swa and
using one of the cores as the earth and the other two as live &
neutral.

AWEM