H
Hawkmoon
TN-C-S supply with submain to outhouse:
Scenario 1 -
10mm 2 core SWA to insulated board in outhouse - SWA not banjo linked to local ET and earth rod installed (TT) - nothing extraneous in building.
Scenario 2 -
10mm 3 core SWA to metalclad board - SWA banjo linked to local ET and 10mm bond taken to extraneous incoming pipework (eg plumbing for sink)
Considering that bonding extraneous pipework is little different than installing an earth rod...
WHY do we have to keep the supply earth separate in scenario 1?
In scenario 2 aren’t you effectively TTing by main bonding?
Tin hat on
Scenario 1 -
10mm 2 core SWA to insulated board in outhouse - SWA not banjo linked to local ET and earth rod installed (TT) - nothing extraneous in building.
Scenario 2 -
10mm 3 core SWA to metalclad board - SWA banjo linked to local ET and 10mm bond taken to extraneous incoming pipework (eg plumbing for sink)
Considering that bonding extraneous pipework is little different than installing an earth rod...
WHY do we have to keep the supply earth separate in scenario 1?
In scenario 2 aren’t you effectively TTing by main bonding?
Tin hat on