Unknown 63 volts

Sorry Kb but for the benefit of the Average Clod (me), you should define "recital box," "pallet racking"

receptacle box miss spell sorry.... (outlets)
pallet racking is heavy duty metal shelving use with a forklift truck.

Then Kb do I understand the racking measures 63 v ac to a reliable earth ground and you are standing on the floor holding nothing but the voltmeter, which I presume is battery-operated, and its probes

Buy chance are the racks somehow bolted down to the floor

More to the story here...

http://www.mytractorforum.com/showthread.php?t=638993&highlight=

Apparently Kb you're already in good hands and hardly require any further help

First I would try turning the power off not just to the barn but to the entire property. If the voltage goes away you will at least know it originates from your service and not a neighbor or from a HV induction nearby (I have seen both). Not knowing that layout of the property I'll suggest a couple of other things that may or may not apply. I had a situation where the power to a building of turned off and there was a faulted underground circuit from another location that as in contact with the underground water line to a hose at the building. The current was using the building ground as a return path and causing a shock hazard even though the building power was off. I would suspect your system is being used as a return and not a supply. I also had a job (150ft metal tower) where there was a HV overhead line nearby that through induction was causing problems with the motor control circuit that ran up the tower. If there are any HV lines nearby the racks could pick up some induction. If you have neighbors that are connected to the same utility transformer and they have a leaking underground circuit it will be looking for a return path anywhere it can.

Thanks to all for your ideas and help...

Wild guess, Kb. You hadn't indicated whether the racks were bolted down. If so maybe there's a metallic subfloor somehow having acquired a potential. For instance the effect of capacitance

Connect a light bulb between one of the racks and neutral (first being sure of course that neutral is well grounded). If the 63 volts disappears when the bulb is connected then suspect capacitive coupling. If instead it lights up, even dimly, then you have a potentially dangerous situation on your hands

So Kb have you performed any further tests….

After much testing we found that the racking is getting bleed off from the 13,000 volt lines on the pole behind the barn. Only through the air. Working like an antenna.

Aha kb, capacitive (inductive?) coupling