So- if'n yer gonna run off both sides of the box, why not just wire the whole thing @ 240- which is what yer doing anyway, effectively- and use the same standards that are required for 240v (120vX2)?

Easy enough to tap the ballasts for 240- If you bought a decent ballast w/in the last two-three years, it's just a matter of changing the power cord.

I dunno- why re-invent the wheel? Esp when we're dealing with something that the original poster stated was dangerous? Why not just do it the right way? Only gonna cost a buck or two more... and if you're ever selling the building, you won't have to deal with oddball wiring...

I just don't understand the advantage to doing it this way...Why not do it right?