Hi,
could anyone please explain the differences between the differnet types of supply earth and the importants of designing your electric wiring instalation around this issue, ie, consumer unit choice etc.
Also is it dangerous (or how dangerous) to work on a circuit that is only disconnected via a single pole switch, leaving the negative connected, or another example is if the DNO main fuse on a supply was out would the negative side be safe to touch as it would still be connected!
Many thanks
could anyone please explain the differences between the differnet types of supply earth and the importants of designing your electric wiring instalation around this issue, ie, consumer unit choice etc.
Also is it dangerous (or how dangerous) to work on a circuit that is only disconnected via a single pole switch, leaving the negative connected, or another example is if the DNO main fuse on a supply was out would the negative side be safe to touch as it would still be connected!
Many thanks