Leviton 1286W 20Amp 120/277Volt Toggle DoublePole AC Quiet Switch
What Does 120-277 Volts Mean. That is how motors and other equipment is marked. 120v and 277v circuits are fed from different panels.
Leviton 1286W 20Amp 120/277Volt Toggle DoublePole AC Quiet Switch
Web 120 for power and 277 for lighting? And a little magic m mcsparkin registered joined sep 11, 2012 Web very usefull if the voltage varies a lot, uk spec ballasts only accept from 207 volts up to 253. No uk ballast will work over that range, but 120/277. Theriot registered joined aug 27, 2011 2,102 posts #3 · sep 11, 2012 xformer to step down. Web 277 volts is the input power of choice for most industrial and commercial applications. Web the 277v fixture is using one leg and neutral of a 277/480v 3 phase 4 wire system and the 208v fixture is using 2 legs of a 120/208v 3 phase 4 wire system.in commercial and industrial. Web in a grounded y (star) connection, when 3 ph 208 volts is the system voltage you get 120 volts to ground, when 3 ph 480 volts is the system voltage you get 277 volts to ground and. These energy star qualified leds are rated to still produce 70% of their original light even after their rated life of 25,000 hours of operation. That is how motors and other equipment is marked.
Web for 2 lines each carrying 120 volts, the calculation for this is 120 volts times 1.732, and the result is rounded up to 208 volts. No uk ballast will work over that range, but 120/277. If it is marked 120 / 277 it is either one or the other. Web 120 for power and 277 for lighting? These energy star qualified leds are rated to still produce 70% of their original light even after their rated life of 25,000 hours of operation. Higher voltage means less current, which means less power loss from resistance as stated in ohm’s and joule’s laws. Web for 2 lines each carrying 120 volts, the calculation for this is 120 volts times 1.732, and the result is rounded up to 208 volts. Web very usefull if the voltage varies a lot, uk spec ballasts only accept from 207 volts up to 253. Web the 277v fixture is using one leg and neutral of a 277/480v 3 phase 4 wire system and the 208v fixture is using 2 legs of a 120/208v 3 phase 4 wire system.in commercial and industrial. And a little magic m mcsparkin registered joined sep 11, 2012 There's these things called subpanels and transformers that make all this possible.
