Posted to uk.d-i-y
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Terminating SWA at remote metal enclosure with TT earthing
On 01/07/2020 08:33, wrote:
On Tuesday, 30 June 2020 22:27:52 UTC+1, wrote:
I have a sub-main to a remote socket with a TT earth and, currently, the
SWA braid is terminated on a plastic enclosure. I need to change the
enclosure to metal so have to find a way to terminate the SWA braid
without connecting it to the metal enclosure.
Lateral thinking is use a
https://www.tlc-direct.co.uk/Products/WKSH506W.html
to join two lengths of SWA, but *not* use the armour continuity straps. You therefore earth each section of SWA separately, from the appropriate end.
There remains a risk of the separate earth potentials being exposed during maintenance, so it should be appropriately labelled.
Owain
That's an interesting idea (I love lateral thinking) but I may have
come-up with a simpler one: find a regular nylon gland that will clamp
on the SWA outer (which may not be simple, I haven't looked yet) and
heatshrink the end of the SWA inside the enclosure to insulate the
braid. Perhaps adding a clamp on the outer, inside the enclosure, as
belt'n'braces.
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