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Generator earthing

Baldyhugh
Hi


I have a tractor driven Backup generator to install on a farm shortly and have a query regarding the earth spike. Does it need to go directly back to the MET or can I connect it directly into the generator earth terminal, the latter being Quite a lot simpler   In my case? 


thanks

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  • 0
    In response to John, an Earth spike is not necessary if there is another adequate Earth connection. A defect in BS7430 which makes assumptions which are not necessaraly correct, it is assuming a very small generator which is free standing. I'd like to see the Earth "spike" at a 2.4 GW power station! Hugh, You latest post is correct. What size is the tractor generator, might be up to 100 kVA if a big tractor? It is still not 200A though. See above. Bigger tractor generators are usually 3 phase, and a local TX supply is too, are you sure it is real TN-S?
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  • 0
    In response to John, an Earth spike is not necessary if there is another adequate Earth connection. A defect in BS7430 which makes assumptions which are not necessaraly correct, it is assuming a very small generator which is free standing. I'd like to see the Earth "spike" at a 2.4 GW power station! Hugh, You latest post is correct. What size is the tractor generator, might be up to 100 kVA if a big tractor? It is still not 200A though. See above. Bigger tractor generators are usually 3 phase, and a local TX supply is too, are you sure it is real TN-S?
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