Lighting fault plz help!!!

[paul_sut]

Hi there just wondering if any one has had anything similar to this. Got a lighting fault it trips every so often there 3 down lights, 1 oside light, 1 flouresent on circuit ive replaced out side light taken all transformers of down light and put temp pendend in there and flo looks fine everything on circuit looks fine but mcb keeps tripping wen it feels like it could it be faulty mcb. No recent diy work, it even tripped wen no lights were turned on. Please any help very grateful.

 

[Knobhead]

Phone js electrical services they may be able to help. I think you know the number.

 

[ipf]

intermittent fault on cable/s or fitting . faulty MCB?

Intermittent english, more like !!!

 

[Octopus]

Last time I saw something like this, the culprit had 4 legs, and a taste for cable insulation!

 

[paul_sut]

Wow never seen so many clever dicks!!! But Many thanks to the ones mature enough to reply to me properly i will take on all your advice i was just asking for simple advice from some of you more experienced electricians.

 

[Dan the spark]

I'm with Murdoch, reckon u have some unwanted guests

 

[paul_sut]

Thank u im back there sat so will split the circuit and do full tests. It trips at different times day and night some times last for hours, days, or minutes. Thank you again for your help.

 

[Dan the spark]

Also as darkwood says, don't rule out the flourescent either and also when you test ensure you carry out an insulation resistance test as a continuity test will not show up the fault

 

[paul_sut]

Yea will do thank u would the flouresent trip it even if its switched off though?

 

[Strima]

Last time I saw something like this, the culprit had 4 legs, and a taste for cable insulation!

In my house. that'll be the spiders after the kids have got hold of them...

 

[Dan the spark]

Shouldn't really

 

[paul_sut]

What i thought. it tripped
Earlier when no one
Touched anything and none
Of the
Lights
On
That
Circuit were switched
On yet
It still tripped. Not good.

 

[Dan the spark]

I'd say rodent, break the circuit down and test. Let us know your outcome. Make sure you disconnect anything that might be damaged by ir testing eg smokes. Good luck

 

[paul_sut]

Will do thanks again

 

[cph6467]

Firstly identify main lighting supply cable, and if possible check for any joints ie junction boxes, check all connections are correct, tight and free of any damp.

Then disconnect cable at both ends and check continuity if all clear reconnect and change mcb, hopefully that's the problem.

Good luck

 

[Hawk81]

Ok am I missing something but it seems to be a common theme now that people do not bring their test gear with them!! Why?? I carry my test gear to every single job. The op says he changed the outside light and other lights. surely the time that took would have been better spent going to fetch the test gear! My advice always carry your test gear!