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This is an interesting discussion.
There's a whole estate near me with 60 amp PME cutout in cabinet outside, 'tails' are 10mm T+E through cavity to CU high up on other side of wall in garage. Main earth is not adequate for PME requirements and my first job at any of these houses is always running an extra independent earth.
But replacing the tails has proved to be very hard due to the amount of rubbish in the wall. It's almost as if all the trades used that cavity as skip!
Apart from the cost, and if I could get them through, is two lengths of Kopex, one per tail a possible solution?
I've never seen it done which makes me suspect there's a flaw....!
There's a whole estate near me with 60 amp PME cutout in cabinet outside, 'tails' are 10mm T+E through cavity to CU high up on other side of wall in garage. Main earth is not adequate for PME requirements and my first job at any of these houses is always running an extra independent earth.
But replacing the tails has proved to be very hard due to the amount of rubbish in the wall. It's almost as if all the trades used that cavity as skip!
Apart from the cost, and if I could get them through, is two lengths of Kopex, one per tail a possible solution?
I've never seen it done which makes me suspect there's a flaw....!