In sci.engr.lighting Jeff wrote:
I'm betting they dont have a standard wall plug though, so thats another
project in itself Any suggestions on that?

Buy a 3-wire round extension cord that is the length you require. Make
sure the fixture has a standard 1/2" knockout on it, then buy a 1/2"
gland nut fitting suitable for the outer diameter of the cord. The
gland nut has metal threads and a locknut on one side to go into the
fixture, and a domed metal nut and rubber bushing on the other side
to grip the cord. Also buy some yellow wire nuts.

Remove the knockout and install the gland nut fitting. Cut off the
female end of the extension cord and insert the extension cord through
the fitting. Strip the outer jacket of the cord for 6", then strip the
individual wires 1/2". Join the cord and ballast wires with wire nuts:
black-black, white-white. The green wire from the cord must go to the
green wire or grounding screw in the fixture.

Plug it in and try it. When you're happy, unplug it and tighten the
locknut and domed nut on the gland nut to secure the cord.

Matt Roberds