OP
Mac
So what you're saying is,if you had a shed in your back garden with an existing supply already feeding a socket,you would still spike the shed.Macca . the outbuilding is remote from the existing main building.....be it 1m. or 100m. therfore if it is to utilize the existing fault protection of EEBAD [ADS],then the equipotential zone extends to the outbuilding which means 10mm2 bonds to any extraneous conductive parts whithin it. Alternatively the outbuilding can form its own equipotential zone by creating aTT system.............if no extraneous conductive parts then no problem !
spark1