grounded27,
Could you please publish the EWIS electrical standards for all to see as you have my curiosity. Also, if all is ok in the electrical world, then why is it that it is MANDATORY for the refuel truck to be grounded to an earthing point AND the aircraft..... static discharge perhaps?
Manicured garden,
I think common sense would prevail here and not give Murphy's (law) any source of ignition whilst refuelling. You may recall that as fuel is getting pumped in, fuel fumes are escaping out of the fuel tank vents.