277 Volts is the input power of choice for most industrial and commercial applications. High voltage lighting is better from an efficiency standpoint. ... Most industrial facilities get their power in a 480/277 volt 3 phase 4 wire system, because 277 is the phase-to-neutral voltage for 480's phase-to-phase.Jun 10, 2015
Can I use a 120 volt bulb in a 250 volt socket?
The fixture can handle anything up to 250V. You can use a 120V bulb. ... The maximum voltage is the highest that the fixture is rated to endure.
Does it matter what voltage bulb you use?
Light Bulb Voltage Does voltage matter for light bulbs? Choosing the correct voltage is crucial for the bulb operation. There is a voltage ratio you are able to go up or down from the voltage you need but it is always recommended to use the correct voltage or higher within the allowed ratio.