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You talking about the 6mm2 cable in from the street?
I believe the spec is 150MM for standard 2.5.
39.4 Segregation of Services.
Either side of the stud is the preferred method of achieving this separation.
or The recommended spacing is at least 300mm wherever it is practicable to do so.
When doing a lead in trench, your power is normally at 60cm deep, you half fill it in, then telephone duct at 30cm deep.
But if you can go deeper then thats good. Eg. Power at 1m deep and telephone duct at 50cm.
Ray Taylor
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