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Oil Tank.

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?

Parents

0 David Stone over 2 years ago

This is a good case for an insulated joiner in the oil pipe by the boiler. Easily done, then bond tank to TT system. It is also obvious that the Garage does not have to be TT, so bond the MET instead to the Earth electrode and oil pipe. Come on Z this is all very basic, or are you trying to teach us something? I assume that there is no water supply or it is plastic?
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0 David Stone over 2 years ago

This is a good case for an insulated joiner in the oil pipe by the boiler. Easily done, then bond tank to TT system. It is also obvious that the Garage does not have to be TT, so bond the MET instead to the Earth electrode and oil pipe. Come on Z this is all very basic, or are you trying to teach us something? I assume that there is no water supply or it is plastic?
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Oil Tank.

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