A garden oil tank is made of plastic. It is supported on blocks off the ground. Its plastic covered metal oil pipe runs above ground along a wall into a bungalow to the oil boiler. From a visual inspection I believe that the metal pipe is NOT an extraneous-conductive-part, but have not electrically tested it yet.
But…………..there is an earth electrode at the tank position with a length of badly connected green and yellow wire that earths the metal pipe. Why do tank installers do that? So now do I:
a, Remove the earth electrode
or
b, Main bond the metal oil pipe?
Z.
