10 second trip

[rapparee]

Did you break the circuit up into sections to eliminate the faulty light fitting or just do a continuity test from light switch. How many light fittings are on circuit what is the overall load. Is it a new circuit

 

[Pete999]

give up pete. it's like pulling teeth. maybe next week we'll get all the info. to give an educated guess.

You're right, 1st day back at work and I'm sick to death of answering daft questions, is it nice to be back Pete? wtf do you think?

 

[james king]

RCD trips when light switch is turned on. Disconnected light switch and all loads and tested between l and n.

 

[james king]

2 light fitting. Split by adaptable box. Swa cable. The box seems to be damp.

 

[telectrix]

you need to IR test between L ans E and N and E. also there'a a possibility of a shared N if L and N are taken from different circuits.

 

[Silly Sausage]

Me today over my toolbox head butted the customers foot and got a nice carpet burn on my face

Have you ever had that feeling that I really need to be sectioned in the general publics interest?

 

[Richard Burns]

The RCD is tripping because of a fault to earth, that fact that it is delayed is either that the fault is near the limit of the tripping current or that the lights warm up a bit and let the water reach the expanded section.
The lights and all junctions need to be dry to prevent this sort of fault.

 

[james king]

It's not a shared n. Been working for the past year they said. IR test 0mohms between L and N.

Could damp cause it to trip after 10 secs? Why dies it happen after that long. Surly with a short it would trip straight away?

 

[rapparee]

The box seems to be damp.

That was my first hunch. Try and dry it out and see how you get on with ir tests

 

[dingledong]

Have you ever had that feeling that I really need to be sectioned in the general publics interest?

Every day archy ! ! Oh you meant me !
I didnt do it on bloody purpose . It fookin hurt .I'm gonna take me Zimmer frame to work now

 

[Marvo]

It's not a shared n. Been working for the past year they said. IR test 0mohms between L and N.

Could damp cause it to trip after 10 secs? Why dies it happen after that long. Surly with a short it would trip straight away?

A low IR test with a megger tester doesn't indicate a 'short' it indicates an insulation or earth leakage fault. Just incidentally if it's an RCD tripping fault why are you testing between the L+N instead of linking the L+N together and testing to earth?

 

[tazz]

If we can get down to the nitty gritty of what tests you have conducted and how....it may shed some light (good pun) on whats causing the fault

 

[james king]

0m ohm is a dead short.

 

[Marvo]

IR test 0mohms between L and N.

0m ohm is a dead short.

Is it 0 ohms or 0mohms (milli ohms) is it 0Mohms (Mega ohms) whilst testing with a megger tester? You're confusing the kak out of me.

 

[trev]

Jiga, for hell's sake there's a procedure for fault finding. It's fairly basic stuff.
Put together a list of what tests you have carried out and how you have broken the circuit down and then maybe we can help you out.

 

[Silly Sausage]

Every day archy ! ! Oh you meant me !
I didnt do it on bloody purpose . It fookin hurt .I'm gonna take me Zimmer frame to work now

You could always get a nice blond wig and go on of those womens chat shows.

 

[Richard Burns]

0m ohm is a dead short.

If you mean 0.0 MΩ then this could be any value of resistance up to 99,999Ω, or 49,999Ω if the meter rounds up.
Hardly a dead short.

Admittedly 0.0 milliohms (0 mΩ) is a dead short

 

[dingledong]

Don't need a blonde wig I'm an essex geeze mate

 

[Silly Sausage]

0m ohm is a dead short.

If you can't understand the readings your instrument are giving, have you ever considered you're in the wrong game?
This is schoolboy stuff!!!

 

[Guest55]

anyone done any bad LSD jokes yet ?