OP
Guest111
Put simply Dan the idea of bonding is that if every metal surface that could become live is connected together(bonded) then if the worst happens everything becomes live and therefore is at same voltage,and thus as there is nothing at zero volts to touch you cannot get a shock, unless you happen to be touching something from outside the area,anyone remember the case years ago when the window cleaner was killed as he cleaned an aluminium window? metal windows used to be bonded and there was a fault and everyone in the house was ok due to the bonding but as he was outside he was electrocuted. put simply its like a faraday cage as long as your in it you don,t get a shock touch it from outside and you can.