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277-Volt Wiring | Hunker
Industrial and commercial wiring can be delivered in 120/208-volt and 277/480-volt systems. Heating and ventilation systems are run at 480 volts while industrial scale lighting runs off 277 volts. The 277/480-volt system powers the industrial and commercial equipment at 480 volts while the branches of 277 volt wiring keep the lights on.
ELECTRICIANS! Need help with 277 volt wiring | NastyZ28
May 02, 2007Those are setup for a facility that has 277/480 volt 3 phase service. That's 277 to ground and 480 phase to phase (hot to hot). You have, in your house/garage, 120/240. 120 phase to ground and 240 phase to phase. No way to get a 277 volt ballast to strike a lamp at 120 volts. Check the ballest wiring diagram if they give you any alternatives.
How many wires are in a 277 volt circuit? - Quora
Aug 16, 2018You’re probably talking about a 3-phase 277/480V wye (star) circuit, widely used in commercial and industrial establishments in North America. The voltage from each phase to neutral is 277V, and the voltage between any two phases is 277 * sqrt(3)
How do you wire a 277 to 120 volt transformer - Answers
Sep 26, 2011Wire it to 120 volt. 277 volt is the star point voltage of 3 phase 480 volts. Likewise 347 is the starpoint of 3 phase 600 volt. By wiring it to 240 volts the voltage might not be high enough to
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