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Hot tub

goldenboy1818
Hi guys if you have a TNS system or TNCs is it mandatory to TT a outdoor hot tub ? Say TNS up to the rotary switch then earth rod from that point ? Thanks guys
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    Nothing in BS7671, the issue will be if there is any bonding required, as there are minimum sizes for a bonding conductor especially for TNCS. If your cpc is going to double up as a bonding conductor then the cpc will need meet the requirements for bonding conductor.


    However there is the issue with an open neutral on the suppliers side, if you search the old forum you will find a few posts on exporting PME/TNCS
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    Nothing in BS7671, the issue will be if there is any bonding required, as there are minimum sizes for a bonding conductor especially for TNCS. If your cpc is going to double up as a bonding conductor then the cpc will need meet the requirements for bonding conductor.


    However there is the issue with an open neutral on the suppliers side, if you search the old forum you will find a few posts on exporting PME/TNCS
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