- Reaction score
- 392
We have had 2 metal steps installed to cover main supply cables (out to flats) from a Ryefield .
when measured IR from MET to steps i got 0.091 MegOhms.
The usual calculations are for when a 30 ma RCD is protecting (which is not the case here)
91 Kohm is above the usual value of 23 Kohm I usually use (10ma).
Should these be bonded to earth?
when measured IR from MET to steps i got 0.091 MegOhms.
The usual calculations are for when a 30 ma RCD is protecting (which is not the case here)
91 Kohm is above the usual value of 23 Kohm I usually use (10ma).
Should these be bonded to earth?