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I am putting up a modern consumer unit (to replace one of four 'fuse boxes') and have the elec board coming to disconnect while I move tails across. Also connected to the meter are other existing 'fuse boxes' which supply quite separate circuits in the house. The earth cable is around 4mm in all of the existing wiring around the meter. So my question is; will I need to upgrade all visible earthing before they do this work (regulations wise, I know it needs to be done) ?
And should this be 16mm or 10mm ?
Many thanks
And should this be 16mm or 10mm ?
Many thanks