Whats the worst that can happen/the danger potential with this type of fault. ? Obviously on an RCD this would trip, but not on a non- rcd circuit - as I'm sure there are plenty of unkown faults of this type supplin gsockets and the like quite "happily"...
Neutral - Earth faults TN-S
- Thread starter dunny123
- Start date
H
holmslaw
..
With the main switch ON, on any TN-S installation, all the neutral conductors are connected to earth. So why would this lead to death or fire ?
With a N to E fault on a TN-S, depending on the impedance of this fault, and how close to the origin, a percentage of the total current will flow down the N to E fault.
If this current is substantial and the earth path is not up to much, there is a huge risk of fire.
I have seen a site with over 200 amps flowing in the earth, through galv trunking, 50mm earths etc. Some fool had mixed up the N and E bar in a TP distribution board.
If this current is substantial and the earth path is not up to much, there is a huge risk of fire.
I have seen a site with over 200 amps flowing in the earth, through galv trunking, 50mm earths etc. Some fool had mixed up the N and E bar in a TP distribution board.
DIYnot Local
Staff member
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local