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Conductor size for earthing SWA shield to TT system?
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ARW
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Conductor size for earthing SWA shield to TT system?
On 28/06/2018 22:02,
wrote:
I've replaced an overhead supply to a shed with a buried SWA cable. The
shed has an earth spike so grounding the SWA at the (PME) head end is
only to protect the cable - where can I find a spec for the size of the
grounding wire that connects the SWA shield to the main earth?
Same size as the cores of the cable and you cannot usually go wrong.
I assume that the only protection you are considering is a spade through
the SWA and that it should trip the head end MCB.
--
Adam
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