Doing some home work re the above. The proposed site is approx 80 metres from nearest mains supply.Looking at a 3.2 metre wide pair of gates.Not sure how heavy they will be. I will probably run electric cables from house to site.I also want some sort of intercom device on the gate.So will I need shielded and armoured cable to reduce interference? As an alternative power supply,do the so called "solar panel" 12v systems actually work? Is it really necessary to have a ground induction loop to open gates for vehicles leaving the house? Anyone got them or any thoughts or tips? Ta.