I've got an old house with no earth rail in the db. The earth spike is connected to the main water copper pipe and the copper pipe is connected via a strap to the metal conduits in the roof. That's how the house is earthed
I am in the process of installing new plugs. I have yet to wire anything but I've installed metal boxes with pvc conduit.
Question 1: does the metal box need to be earthed?
Question 2: can I install an earth rail in the empty space in my db and use the metal casing of the db as the 'main' earth point since the casing is connected to the earth spike or do I need to run a separate earth cable from the spike to the new earth rail in the db?
Question 3: only the new plugs will be earthed via new earth cables, the rest of the house will remain earthed by the conduits, can I connect the earth wire from the twin earth cable to an existing conduit with a strap?
Did you like this article? Share it with your favourite social network.