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Thread: Can an Earth leakage be used as a main switch ?

  1. #21
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    We have seen a whole development having earth leakage as main.We pass it although stoves and nuisance tripping can cause issues down the line .So would not recommend earth leakage as main switch.

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    I could not see the model number of the E/L but the C/B spec sheets also has E/L on it and that brand does look like it has overload protection as well and is rated at 6kA. However, another point is, is it SABS approved?

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    Out of personnel experience I would say a DB must have a mains smaller then the supply mains. I recently had a call out about a light not working. After testing I decided to investigate the I ceiling for loose wires. I switched the earth leakage off, since there was no mains and looked for the fault in the ceiling. When I touched a metal conduit I received a severe shock
    Back on the ground I found out that the lights were not on earth leakage but was fed from the TOP of the earth leakage. So having a mains, prefabil a two pole is best.

    Just for interest sake: 30A and 40A mains and even smaller is pretty common in my valley. That however is a story for another day

  4. #24
    Silver Member Derlyn's Avatar
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    Hi All

    From the photo, would you say that this earth leakage offers both overload and earth leakage protection ?

    Cannot find anything online.

    Thanks

    Derek


    Click image for larger version. 

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  5. #25
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    Quote Originally Posted by Derlyn View Post
    Hi All

    From the photo, would you say that this earth leakage offers both overload and earth leakage protection ?

    Cannot find anything online.

    Thanks

    Derek


    Click image for larger version. 

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    I would say yes due to the symbol. The little Astrix thing. Pg 341 of SANS Ed. 3. Will attach screen shot of table, the symbol for a circuit breaker

    Sent from my SM-N960F using Tapatalk

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    Derlyn (15-Oct-21)

  7. #26
    Diamond Member Justloadit's Avatar
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    According to this web site it is a 40A circuit breaker as well.

    The symbol is an electromagnetic device used for the tripping mechanism, not sure the origin though.
    Victor - Knowledge is a blessing or a curse, your current circumstances make you decide!
    Solar pumping, Solar Geyser & Solar Security lighting solutions - www.microsolve.co.za

  8. Thanks given for this post:

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