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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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    Mike.

    When the mains supply comes back on the house with the generator will still be running on the generator until the change over switch is operated, but the  mains supply will be immediately reconnected in the house without the generator, so the fridge will still be running off the generator despite the power being on in the house.

    Text book example of breaching of the zones, so careful consideration is required.

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  • 0

    Mike.

    When the mains supply comes back on the house with the generator will still be running on the generator until the change over switch is operated, but the  mains supply will be immediately reconnected in the house without the generator, so the fridge will still be running off the generator despite the power being on in the house.

    Text book example of breaching of the zones, so careful consideration is required.

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