dng
Member
- Location
- Las Vegas, NV
Hi --
We're having an LED high-bay fixture installed that will operate on voltages from 110 to 277. The lighting in this particular area is wired for 120 volts, and is normally switched off at the end of the day.
The stand-by emergency power available to us is supplied at 277 volts (which is what most of the fluorescent fixtures in our facility use).
We'd like to have this fixture wired into the stand-by system. Is it legal to use a definite-purpose contactor to switch between the two different voltages, i.e., when the coil on the contactor is energized, the fixture receives 120, but with power-loss to the coil, to fixture receives 277?
Any help is appreciated -- Cheers
[h=1][/h]
We're having an LED high-bay fixture installed that will operate on voltages from 110 to 277. The lighting in this particular area is wired for 120 volts, and is normally switched off at the end of the day.
The stand-by emergency power available to us is supplied at 277 volts (which is what most of the fluorescent fixtures in our facility use).
We'd like to have this fixture wired into the stand-by system. Is it legal to use a definite-purpose contactor to switch between the two different voltages, i.e., when the coil on the contactor is energized, the fixture receives 120, but with power-loss to the coil, to fixture receives 277?
Any help is appreciated -- Cheers
[h=1][/h]