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    House electrics problem

    Have fuse that keeps tripping, well twice since Thursday. Was going to call an expert in but when I tried to reset it Friday morning it worked. Now it's gone again and the only way to get the one board (it's twin board) on is to leave the downstairs lights fuse off. Advice other then call a man who knows ?

    Bulb went a few days before, board is 18 months old.

    29 Comments

    it might be that the bulb that you mentioned needs replacing try that first otherwise might be the board in which you will have to get a professional to do the job

    sounds like you have a problem with your downstairs lighting circuit then. check all screws are tight and all wires are connected in the switches and ceiling roses. other than that call an electrician

    When the bulb went did it trip the circuit?

    Change bulb and swap the trip circuits around for the same amps. That way you can make sure its not the trip on the fuse

    Original Poster

    I've just been able to reset it. I'll replace the bulb in the morning and see how it going. We can't workout between us if the clothes dryer was on both times, it was on last time but that's on the other board.

    Original Poster

    badgerrules

    When the bulb went did it trip the circuit?



    Yes, we also have another bulb in a cluster of 3 that takes it's time to come on.

    Is there an outside light on the circuit that might be getting a bit of damp in it. We had this happen.

    PulisOut

    Yes, we also have another bulb in a cluster of 3 that takes it's time to … Yes, we also have another bulb in a cluster of 3 that takes it's time to come on.



    Does the other bulbs on the offending light fitting still work?

    Banned

    Call an electrician

    Could be a faulty mcb, a loose wire or anything from a rat chewing a wire to a cobweb or damp fitting & anything & all inbetween .

    Edited by: "YouDontWantToKnow" 27th Feb

    Original Poster

    badgerrules

    Does the other bulbs on the offending light fitting still work?



    Yes

    Original Poster

    cheal

    Is there an outside light on the circuit that might be getting a bit of … Is there an outside light on the circuit that might be getting a bit of damp in it. We had this happen.



    That's another thing to look at yes, although the bulb went in the a few months go.

    what do u mean the board is 18 months old do u mean 18 years, if it is why only 18 months old why have u got a wire fuse in it I'm sure they stopped doing them about 20 years ago.

    Original Poster

    MynameisM

    what do u mean the board is 18 months old do u mean 18 years, if it is … what do u mean the board is 18 months old do u mean 18 years, if it is why only 18 months old why have u got a wire fuse in it I'm sure they stopped doing them about 20 years ago.



    It's modern board, I didn't mention wire fuses at all. We have a new kitchen fitted and need two dedicated supplies so the board was replaced.

    PulisOut

    It's modern board, I didn't mention wire fuses at all. We have a new … It's modern board, I didn't mention wire fuses at all. We have a new kitchen fitted and need two dedicated supplies so the board was replaced.



    ​ok I must be going mad I just re-read it definitely nothing about a wire but why did I see it there in first place. when mine trips I usually find it keeps tripping unless I switch off all the lights before switching it on otherwise it keeps tripping no idea why it does that. so just make sure all lights are switched off before turning the trip switch on sometimes u have to push up each one 1 at a time instead of just the big Button aswell.

    First try knocking the wall near the light switches whilst the lights are on, if it trips then it may well be a loose connection in the switch. If that doesn't work try removing ALL the light bulbs on that circuit, then reset the fuse. If it trips out again you know it's not a bulb. If not then try putting bulbs in one at a time until it trips. replace any that cause it to trip.
    You say the board is 18 months old? There are two things to remember. First, the new pcb's are much more sensitive and responsive now than 10 years ago, and second and most important - the PCB/circuit board is there to protect your equipment, not you. If it's anything more than a bulb I would seriously recommend getting an electrician in - whilst the risk of fire sounds unlikely ( from your description the board is functioning correctly) there is still a risk.

    Original Poster

    MynameisM

    ​ok I must be going mad I just re-read it definitely nothing about a wire … ​ok I must be going mad I just re-read it definitely nothing about a wire but why did I see it there in first place. when mine trips I usually find it keeps tripping unless I switch off all the lights before switching it on otherwise it keeps tripping no idea why it does that. so just make sure all lights are switched off before turning the trip switch on sometimes u have to push up each one 1 at a time instead of just the big Button aswell.



    I could hazzard a guess as to why you have to turn the lights off. They work by measuring the flow and if there is a change it will trip. When you turn the lights off I suspect they discharge at the switch (the reason why someone once told me it's better to leaves light on rather then keep turning them on and off as you go out a room). Cus all that is prob rubbish :-)

    Original Poster

    mrty

    First try knocking the wall near the light switches whilst the lights are … First try knocking the wall near the light switches whilst the lights are on, if it trips then it may well be a loose connection in the switch. If that doesn't work try removing ALL the light bulbs on that circuit, then reset the fuse. If it trips out again you know it's not a bulb. If not then try putting bulbs in one at a time until it trips. replace any that cause it to trip. You say the board is 18 months old? There are two things to remember. First, the new pcb's are much more sensitive and responsive now than 10 years ago, and second and most important - the PCB/circuit board is there to protect your equipment, not you. If it's anything more than a bulb I would seriously recommend getting an electrician in - whilst the risk of fire sounds unlikely ( from your description the board is functioning correctly) there is still a risk.



    Oh for sure I'll get a man in, I need to anyway later in the year. But if it's a bulb that would be great as it's an hassle getting anyone.

    You say its a twin board is it a single board with 2 rcd isolators ...... does it trip as soon as light is switched on or appliance switched on ......if twin rcd sometimes the neutral of a circuit could be connected to the opposite rcd its supplied from and would trip as the circuit is energised

    Original Poster

    jizzer

    You say its a twin board is it a single board with 2 rcd isolators ...... … You say its a twin board is it a single board with 2 rcd isolators ...... does it trip as soon as light is switched on or appliance switched on ......if twin rcd sometimes the neutral of a circuit could be connected to the opposite rcd its supplied from and would trip as the circuit is energised



    Don't really understand that but no it doesn't trip on turning anything on or off.





    PulisOut

    Have fuse that keeps tripping, well twice since Thursday. Was going … Have fuse that keeps tripping, well twice since Thursday. Was going to call an expert in but when I tried to reset it Friday morning it worked. Now it's gone again and the only way to get the one board (it's twin board) on is to leave the downstairs lights fuse off. Advice other then call a man who knows ?Bulb went a few days before, board is 18 months old.

    PulisOut

    I've just been able to reset it. I'll replace the bulb in the morning and … I've just been able to reset it. I'll replace the bulb in the morning and see how it going. We can't workout between us if the clothes dryer was on both times, it was on last time but that's on the other board.

    badgerrules

    When the bulb went did it trip the circuit?



    What type of light fitting is it, or what type of lamps does it take?
    Have the lamps always took time to come on or has this just started recently?
    I'm thinking along the lines of a low voltage fitting and you have a faulty transformer that trips the circuit breaker/rcd after it heats up..?

    Re 'clothes dryer', are you referring to a tumble dryer? If so, this shouldn't be connected with a lighting circuit fault as the tumbler dryer should be on a ring main.
    Edited by: "andynicol" 27th Feb

    is it the individual mcb tripping or if rcd protected is it the rcd isolator(usually has a button with T on it )

    Original Poster

    PulisOut

    Have fuse that keeps tripping, well twice since Thursday. Was going … Have fuse that keeps tripping, well twice since Thursday. Was going to call an expert in but when I tried to reset it Friday morning it worked. Now it's gone again and the only way to get the one board (it's twin board) on is to leave the downstairs lights fuse off. Advice other then call a man who knows ?Bulb went a few days before, board is 18 months old.

    PulisOut

    I've just been able to reset it. I'll replace the bulb in the morning … I've just been able to reset it. I'll replace the bulb in the morning and see how it going. We can't workout between us if the clothes dryer was on both times, it was on last time but that's on the other board.

    badgerrules

    When the bulb went did it trip the circuit?



    Good thinking it's normal 3 lamp centre light with fan, suspect it has always flickered on. I assumed the same about the dryer. I'll sort out all the bulbs in the morning and just wait to see if it continues.

    Bulbs grow
    Lamps glow

    Not trying to be negative OP, but if you don't know where to start looking, then your experience is limited, as stated above, may be a bad connection/cable/mcb...

    If it's a quick fix a electrician won't charge loads, and it's better to be safe than sorry

    PulisOut

    Good thinking it's normal 3 lamp centre light with fan, suspect it has … Good thinking it's normal 3 lamp centre light with fan, suspect it has always flickered on. I assumed the same about the dryer. I'll sort out all the bulbs in the morning and just wait to see if it continues.



    When you say 'sort out all the lamps' are you saying all 3 aren't working....?

    What type of lamps are they......?

    Do you notice anything unusual with the fan, i.e. does the circuit breaker/mcb trip when the fan is switched on...?


    It does help if you give folks all the information first and foremost, no point drip feeding it and then only when asked.

    Original Poster

    Andyr330

    Not trying to be negative OP, but if you don't know where to start … Not trying to be negative OP, but if you don't know where to start looking, then your experience is limited, as stated above, may be a bad connection/cable/mcb...If it's a quick fix a electrician won't charge loads, and it's better to be safe than sorry



    I'm not so much concerned about payment as getting some here and waiting doing nothing. If I tell you I phoned 17 plasters and still had to do that job myself and the last electrician came from 15 miles away, he was about the 10th call. Still waiting for the TV airial bloke and he's been coming for 27 years :-)

    Original Poster

    Thanks everyone for the help. I'll report back when solved.

    The delay in switching on one of the lamps may be a transformer problem. A wide range electronic transformer takes time to 'warm up' from cold and the delay to achieve a constant current can cause nuisance tripping.

    Could be Mice chewing cables. Loose wire on back of switch. Bathroom light getting wet from condensation.
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