I hope to god that there's an earth conductor in the circuit cable, and that what you're talking about is a supplementary bonding conductor.
I don't say this in order to offend, or appear superior, but looking at this topic as a whole I would strongly advise you to put any plans to do electrical work on hold until you know more about it all.
I don't say this in order to offend, or appear superior, but looking at this topic as a whole I would strongly advise you to put any plans to do electrical work on hold until you know more about it all.