faulty downlight

[Innominata]

Hi,
I have been asked to look at a faulty 12v downlight in a hotel.I have been informed that the following measurements have been noted at the transformer input: L - E 240v,N - E 240v,and N - L 0v any ideas please.

 

[ajelec10]

Sounds just like a broken nutural sone before the transformer
Regards
AJ

 

[sixfingers]

Sounds just like a broken nutural sone before the transformer
Regards
AJ

N - E = 240V

 

[ajelec10]

yes you would be testing a live nutural through the transformer think about it or draw it,

 

[Mac]

Hi,
I have been asked to look at a faulty 12v downlight in a hotel.I have been informed that the following measurements have been noted at the transformer input: L - E 240v,N - E 240v,and N - L 0v any ideas please.

Who noted the measurementsHave you tested it yourself.Could be a faulty transformer.What about the lamp itself.

 

[ajelec10]

Trust me this is a broken nutural no dout about it, you are getting a potential differance accross live to earth as live is at 230v and earth is at 0v, a potential differace accros n and earth because the transformer is still connectde and the live goes in the transformer through its winding and out thus making nutural live. you get no pd accross the live and nutural because the nutural has no return path,

regards

Aj

 

[Innominata]

Thanks for your replies I will let you know the outcome next week