- Reaction score
- 13,478
230v N-L 230v N - E and 230v E to N
That's not what you typed in post 18 and I think it's not what you mean. Or you're making it up as you go along...
Discuss 230v neutral to earth ? row of lights gone out mcb not tripped in the Electrical Forum area at ElectriciansForums.net
230v N-L 230v N - E and 230v E to N
That's not what you typed in post 18 and I think it's not what you mean. Or you're making it up as you go along...
My bad, I meant the bit of your post 17 that I quoted in post 18.Post 18 was your post
230v N-L 230v N - E and 230v E to N
230v L - N 230v N-L and 230v N-E
My bad, I meant the bit of your post 17 that I quoted in post 18.
See the difference? If you meant:
230V L-N, 230V L-E and 230V N-E that's different, and also impossible unless L and 'N' happen to be two lines from a 3-phase corner grounded delta supply which I somehow doubt. Test and report accurately or any help you might get will be meaningless.
I was getting 230v N- L at fitting as well .. so how can it be broken ?
230v L - N 230v N-L and 230v N-E row of lights out mcb not tripped .
If they were the readings either all the lamps have failed, all the ballasts have failed or a combination of the 2.
If you truly have; "At the end fitting i was getting 230v between N-E and i haven't come across this before would appreciate any help"
You potentially have a dangerous situation, particularly to yourself when fault finding.
The only way you can get your readings is if E or N are a different phase to L.
Don't be distracted by the comment, they were previously working OK and no-one else has touched them,
ASSUME NOTHING.[/QUOTEt
thanks , but what do you mean when u say "The only way you can get your readings is if E or N are a different phase to L. "
do u mean if a N or a E is touching a Live somewhere ?
but what do you mean when u say "The only way you can get your readings is if E or N are a different phase to L. "
do u mean if a N or a E is touching a Live somewhere ?
More likely been deliberately connected to another phase and not serving the purpose of N or E.
Hence caution, assuming your readings are correct as the body of the fittings may be Live and not earth.
Hello all,
I have recently attended a job where a row of lights have gone out and was advised and seen for myself when i got there that no breakers have tripped.
First i took the cover off of the panel with the mcb's that feed all lighting circuits in open office area , and checked i have 230v on load side on mcb , which i did have on all mcbs to rule out a faulty breaker. I next went to the nearest light fitting to the riser where dbs where and found 230v at fittings with lights not working (all on sensors ) and ballast units also had 230v.
I then was advised (by site engineer) that sometime in the past these lights had lost power and had been rewired by someone ?? not sure if they were qualified or not ... i then went to a room at the end of the office area where he advised me they repowered this lighting circuit which has now gone out but power still there couldn't see any polarity faults but didn't get a chance to check all fittings as was in working hours of a office.
At the end fitting i was getting 230v between N-E and i haven't come across this before would appreciate any help
How did you draw that conclusion? There is 240 N - E and 240 L - E with the L - N voltage unknown.
The logical conclusion is that the N has risen to the same potential as the L with respect to E
L-N voltage was 230v as well and thanks guys . Will have more info after the morning getting there for half 5am . :0 .
How did you draw that conclusion? There is 240 N - E and 240 L - E with the L - N voltage unknown.
The logical conclusion is that the N has risen to the same potential as the L with respect to E
Reply to 230v neutral to earth ? row of lights gone out mcb not tripped in the Electrical Forum area at ElectriciansForums.net
We get it, advertisements are annoying!
Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.