earth cable c.s.a
- Thread starter whiz
- Start date
the main earth cables are not meant to cary normal operating current
however it may still be too small
16mm is the required size for domestic sized TN-S and TN-C-S
for a TT you can have it much smaller as the rod can't cary much current anyway (thats why you need the main rcd)
however it may still be too small
16mm is the required size for domestic sized TN-S and TN-C-S
for a TT you can have it much smaller as the rod can't cary much current anyway (thats why you need the main rcd)
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