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Oil Tank.

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Situation.

Double domestic garage. Inside at the rear is a large steel heating oil tank on blocks off a concrete floor at high level. A copper oil pipe runs down and underground across a passageway to the oil boiler in the house. Garage sockets and light TT earthed via a garage unit with a 30mA R.C.D. The garage earth electrode is about 1.5m from the buried copper oil pipe in the passage outside.

The house earthing system is TN-C-S. The copper oil pipe is main bonded at the house.

Are there any potential safety issues here?

Z.

 

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  • 0

    unless you spike a hole the oil line with an electrode, all seems well. 

    The question I suspect you mean relates to the oil pipe being bonded to the PME earth in the house, and exposed in the garage. Even if it was not ‘bonded’ the earth would still be exported as I bet the boiled is class 1 and has a 13a plug.

    Unavoidable, but less of a hazard in a dry floored garage than in a puddle outside, and less likely to be touched by a passer by than a PME earthed street light. What is there is probably the the best you could do. I'd suggest not losing any sleep over it.

    Mike.

     

Reply
  • 0

    unless you spike a hole the oil line with an electrode, all seems well. 

    The question I suspect you mean relates to the oil pipe being bonded to the PME earth in the house, and exposed in the garage. Even if it was not ‘bonded’ the earth would still be exported as I bet the boiled is class 1 and has a 13a plug.

    Unavoidable, but less of a hazard in a dry floored garage than in a puddle outside, and less likely to be touched by a passer by than a PME earthed street light. What is there is probably the the best you could do. I'd suggest not losing any sleep over it.

    Mike.

     

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