Voltage drop on domestic lighting circuit

[dan35]

Hi all , at work today I was doing some live testing on an existing installation all readings were fine until I came to the lighting circuit . At the last light I was taking a ZS reading and the voltage reading was coming up as 140-146 volts I then checked all lights on the circuit and got the same reading , this in turn meant that my tester was not providing me with a ZS reading.
Does anyone have any ideas as to why there would be such a voltage drop on one particular circuit?
(by the way this is a downstairs flat with six lights so i dont think length of circuit is an issue)
any help much appreciated
Dan

 

[trev]

Check your terminations mate. I've seen this when something hasn't been nipped up properly.

 

[telectrix]

yep. start at CU and work along circuit.

 

[dan35]

thanks for the advice , will be back there tomorrow checking terminations and hopefully problem solved
Thanks again
Dan

 

[BLBelfast]

Loose neutral