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Thread: Earth leakage trips at night??

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    Earth leakage trips at night??

    The problem I have is that my earth leakage only trips at night.
    This problem started about 2 weeks ago. So room by room I unplugged all appliances from the wall mounted sockets till I ended up unplugging everything in the house, still I had trips.
    All my appliances are on during the day and I have no trips during the day. We’re heading into winter now, so I don’t know if the cold at night has any effect on this.
    There’s not a specific time for these trips as it happens randomly during the night.
    What are the signs of a faulty earth leakage unit?

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    Diamond Member adrianh's Avatar
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    Or you may have moisture building up that causes a short.
    How easily someone is offended is directly proportional to how stupid they are.
    ~GS Elevator

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    Or an evening visitor chewing on your wires.
    Victor - Knowledge is a blessing or a curse, your current circumstances make you decide!
    Solar and LED lighting solutions - www.microsolve.co.za

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    Diamond Member AndyD's Avatar
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    Hi Jongseun, welcome to the forum.

    If you scroll down toward the bottom of this page you should see 'similar threads' are listed (maybe not if you're using a mobile device). You can read this one particularly for some fresh ideas.
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    Hello Everyone

    I am new to the forum. I work for an electrical services business in Cape Town. The problem causing nuisance tripping is ingress of moisture in the fixed electrical installation. Get a competent electrician to work on it while fault is still active.

    Maxwel

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    Where would one find moisture in the electricals? I don't have any sockets outside, just lights. It seems to be that the later I go to bed (not using allot of electricity) the later the E/L will trip...Could a faulty E/L unit also be the culprit here? I've read on here that CBI E/L units manufactured in 2006 where faulty. My place was build in 2006...
    What are the symtoms of a faulty E/L unit?

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    Diamond Member AndyD's Avatar
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    The likelyhood of the actual earth leakage breaker being faulty is pretty slim. You'll need to get an electrician with the right equipment around to ramp test it otherwise there's a good chance you replace it and the problem still persists. Similarly if you've visually checked everything and ruled out all the appliances in the house by unplugging them then you will also need an electrician with suitable equipment and experience to locate and repair the problem.
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    Diamond Member adrianh's Avatar
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    What would be the suitable experience and equipment?
    How easily someone is offended is directly proportional to how stupid they are.
    ~GS Elevator

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    Diamond Member AndyD's Avatar
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    A good understanding of general electrical safe practices, IR faults understanding and experience, knowing effective isolation of circuits, how to identify crossed and borrowed neutrals etc.

    Equipment would be a good multi-range and multi voltage Mega tester, a high res low current clamp meter, an RCD ramp tester with test wave reversal and trip timer, earth impedence tester, a general multimeter and a triplicate carbonised invoice book.
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    Diamond Member adrianh's Avatar
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    Ah....:-)
    How easily someone is offended is directly proportional to how stupid they are.
    ~GS Elevator

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