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<blockquote data-quote="kme" data-source="post: 75651" data-attributes="member: 113"><p>It would still be ADS, as long as supply is TN, and earthing (incl CPC) is correct. Fault current would be sufficient to take out 3036 (presumably, as long as max Zs was confirmed at time of installation)</p><p></p><p>Automatic Disconnection of Supply (in the event of a fault) would occur, as the large current circulated by the earth would be enough to blow the protective device.</p><p></p><p>Consider, for example, a commercial premises; say a hotel. Their rooms are individually fed from a busbar, on a rewirable 800A fuse (no rcd). That circuit, technically a sub-main, is still subject to 7671 in entirety, including ADS</p><p></p><p>That help, Nat??</p><p></p><p>KME</p></blockquote><p></p>
[QUOTE="kme, post: 75651, member: 113"] It would still be ADS, as long as supply is TN, and earthing (incl CPC) is correct. Fault current would be sufficient to take out 3036 (presumably, as long as max Zs was confirmed at time of installation) Automatic Disconnection of Supply (in the event of a fault) would occur, as the large current circulated by the earth would be enough to blow the protective device. Consider, for example, a commercial premises; say a hotel. Their rooms are individually fed from a busbar, on a rewirable 800A fuse (no rcd). That circuit, technically a sub-main, is still subject to 7671 in entirety, including ADS That help, Nat?? KME [/QUOTE]
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