- Reaction score
- 51
Got a question (this job is done), Mains is TNS, now there is an SWA from mains that feeds a panel, now I’ve tested this site a few times and readings vary for some reason, now to be safe feeding a new panel which will be outside then to some outdoor sockets, the panel (with upfront RCD) is fine Ze of 0.45 which is good, but at the boxes was in the 3.35 ohm range, now I’d already glanded the SWA in and used the earth so all I did was added a earth rod for additional protection, any one could explain why my readings was higher?