MarkyMarkNC
Senior Member
- Location
- Raleigh NC
I'm adding a bunch of 2 x 4 fixtures to a warehouse space that has a Delta 240/120V system. The 120V spaces in the panel are all being used, or at least have existing circuits that are run off of them. There are plenty of high leg spaces left, as all of the 2 or 3 pole equipment is coming out of a different panel (also full.)
I got to wondering if, since the ballasts work on both 120V and 277V, would they work on 208V hot to neutral? How do universal voltage ballasts work? How do they "sense" what voltage they have? Would this even be legal? Anyone done this before?
It would sure save a lot of my time trying to track down a couple of unused circuits if I could just wire the lights this way. If this is possible, and/or legal, I'm thinking I would be sure to CLEARLY label every box and fixture with the voltage, for future use. I would hate to be the guy ten years down the road who burns up some piece of equipment trying to tap 120V off my circuit. I know, because I've been that guy before (wow! that fan sure is moving mighty fast!!!)
Thoughts?
I got to wondering if, since the ballasts work on both 120V and 277V, would they work on 208V hot to neutral? How do universal voltage ballasts work? How do they "sense" what voltage they have? Would this even be legal? Anyone done this before?
It would sure save a lot of my time trying to track down a couple of unused circuits if I could just wire the lights this way. If this is possible, and/or legal, I'm thinking I would be sure to CLEARLY label every box and fixture with the voltage, for future use. I would hate to be the guy ten years down the road who burns up some piece of equipment trying to tap 120V off my circuit. I know, because I've been that guy before (wow! that fan sure is moving mighty fast!!!)
Thoughts?