G
gdog
Problem with neutral.
The other day we had a problem with a circuit not working correctly.
The circuit is a radial,wired in 4mm singles,in metal trunking powering 4 switched fused Spurs.
The circuit had previously been dead tested,with no apparent problems.
However when the circuit was energised, only 2 of the spur units worked.After investigation we found that there was 240volts at the 1st and second spur,and 160volts at the 3rd and 4th spur,between live and neutral,and 240volts between live and Earth.We have proven that the neutral between 2nd and 3rd Spurs is the same one,and has an end to end resistance of about 0.11ohms.
Any ideas please,we have had little time to pursue the fault at the moment,but need to resolve next week.
Cheers G.
The other day we had a problem with a circuit not working correctly.
The circuit is a radial,wired in 4mm singles,in metal trunking powering 4 switched fused Spurs.
The circuit had previously been dead tested,with no apparent problems.
However when the circuit was energised, only 2 of the spur units worked.After investigation we found that there was 240volts at the 1st and second spur,and 160volts at the 3rd and 4th spur,between live and neutral,and 240volts between live and Earth.We have proven that the neutral between 2nd and 3rd Spurs is the same one,and has an end to end resistance of about 0.11ohms.
Any ideas please,we have had little time to pursue the fault at the moment,but need to resolve next week.
Cheers G.