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Thread: Earth leakage tripping with no load ?

  1. #21
    Platinum Member Derlyn's Avatar
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    Earth and neutral bridged in the prepaid meter which is usually in close proximity to the DB. Whole of East London. We have an ideal situation.

    Peace out ... Derek.

  2. #22
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    Quote Originally Posted by Derlyn View Post
    Earth and neutral bridged in the prepaid meter which is usually in close proximity to the DB. Whole of East London. We have an ideal situation.

    Peace out ... Derek.
    So you use a TN-C-S system earthing ?

    We use a TN-C system earthing.
    Comments are based on opinion...not always facts....that's why people use an alias.

  3. #23
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    " Only some of the suburbs, especially the older one's, where the service cables are overhead, no earth is supplied. Only 2 wires. Live and neutral.

    My house, for instance, is in one of these older areas but being a newish house compared to the rest, has an underground service cable where a seperate earth is supplied.

    My test video will be uploaded this coming weekend.

    Peace out ... Derek"

    I need to read all the posts
    Comments are based on opinion...not always facts....that's why people use an alias.

  4. #24
    Platinum Member Derlyn's Avatar
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    Even where a seperate earth is supplied, it is still bridged with the neutral in the prepaid meter. Mine included.

    Supply Authority will NOT install the prepaid meter if that special copper link that is supplied with the meter bases is not in place between the earth and neutral on the meter base.

    Peace out ... Derek.

    Click image for larger version. 

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    You will notice that even although there is an incoming earth, if you look closely you will see a bare copper bridge between the earth and neutral.

    That's how it's done here.
    Last edited by Derlyn; 21-Oct-20 at 09:07 AM.

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    Your loop impedance test results must be low?

    I have been thinking ... this might not be a bad idea considering the rate at which earth wires are being removed from the overhead lines around here ... creating a huge problem with loop impedance tests.
    Comments are based on opinion...not always facts....that's why people use an alias.

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    Quote Originally Posted by Derlyn View Post
    Even where a seperate earth is supplied, it is still bridged with the neutral in the prepaid meter. Mine included.

    Supply Authority will NOT install the prepaid meter if that special copper link that is supplied with the meter bases is not in place between the earth and neutral on the meter base.

    Peace out ... Derek.

    Click image for larger version. 

Name:	Photo-0035.jpg 
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ID:	7998

    You will notice that even although there is an incoming earth, if you look closely you will see a bare copper bridge between the earth and neutral.

    That's how it's done here.
    You should fit a main switch and a few cicuit breakers in your DB
    Comments are based on opinion...not always facts....that's why people use an alias.

  7. #27
    Platinum Member Derlyn's Avatar
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    Quote Originally Posted by ians View Post
    Your loop impedance test results must be low?
    Ian, my brother. Anything above 0,5 Ohms and we know there's something not right. I mean we only checking the earth loop impedance up to the meter.

    Fortunately we have a good relationship with the guys at Revenue in the Municipality.
    Take a photo of the sealed meter, make a call and request permission to break seals and pull the meter in order to carry out inspection on base.
    Inspection done, one call and a technician from Revenue is there within the hour to re seal.

    My brother, that is one department that's on the ball here in our valley.

    Peace out .. Derek.

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