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Connection to Neighbour

PG

A house has a 230V, 5kW standby generator which is connected to the electrical installation via a manual, double pole (L&N), break before make changeover switch. In accordance with DNO requirements, it has the neutral earthed by an electrode (in addition to the MET connection with earth).

The next-door neighbours do not have a standby generator and the question was raised that, in the event of a mains power loss, would it be OK to run an extension lead from the Standby Generator fed installation to supply, say, the neighbours fridge?

I sketched out the arrangement for both TN-S & TN-C-S and can’t see any problems. 

I note that where the neighbour’s equipment is connected to his/her dwelling equipotential bonding system (say a heating boiler supply) the two dwelling equipotential bonding systems would be interconnected by the extension lead earth core. This would be in addition to any parallel paths present (water, gas services etc.). 

Does anyone foresee any problems with the proposed arrangement of supplying the neighbour via an extension lead?

Many thanks.

PG

A picture is worth a thousand words ?

Generator next door.pdf

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  • 0

    It depends rather how it is done. If it was literally a lead to the fridge - a plug at the genset end and a socket for the fridge to eb unplugged from the wall and plugged into the lead,  it should  be fine - or at least the sort of thing that may be trouble would be trouble for house with the genset too. 

    Do be clear how if the external mains supply and earth connection are missing, the genset still gets an earth to terra-firma and an NE bond.

    But apparently easy things, like a lead with a plug at each end to feed power into the neighbour's ring for example,  and yes, some folk really are that daft, can end very badly.

    More detail on how it will be done is needed.

    Mike.

     

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  • 0

    It depends rather how it is done. If it was literally a lead to the fridge - a plug at the genset end and a socket for the fridge to eb unplugged from the wall and plugged into the lead,  it should  be fine - or at least the sort of thing that may be trouble would be trouble for house with the genset too. 

    Do be clear how if the external mains supply and earth connection are missing, the genset still gets an earth to terra-firma and an NE bond.

    But apparently easy things, like a lead with a plug at each end to feed power into the neighbour's ring for example,  and yes, some folk really are that daft, can end very badly.

    More detail on how it will be done is needed.

    Mike.

     

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