answersLogoWhite

0


Best Answer

Brown - phase A Orange - phase B Yellow - phase C Gray - Neutral Green or Green/Yellow - Ground

User Avatar

Wiki User

15y ago
This answer is:
User Avatar
More answers
User Avatar

Wiki User

10y ago

Grey.

This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: What color for neutral 277v?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Continue Learning about Electrical Engineering

What is the difference in amps used by lighting wired 277v vs 208v?

Answer for USA, Canada and countries running a 60 Hz supply service.Assuming you are using the same fixture, and assuming the fixture can operate on either voltage, you will get fewer amps with 208v than with 277v. However, a fixture designed for 208v will probably burn up on 277v, and a fixture designed for 277v will probably not produce any light on 208v.The two fixtures in reality are quite different. 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 installations the 277v fixture is most common.As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.Before you do any work yourself,on electrical circuits, equipment or appliances,always use a test meter to ensure the circuit is, in fact, de-energized.IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOBSAFELY AND COMPETENTLYREFER THIS WORK TO QUALIFIED PROFESSIONALS.


Why use 277v light fixtures instead of 110v light fixtures?

277v light fixtures are more efficient to operate and less expensive to install than a 110v fixture of identical wattage. 277v light fixtures are typically installed when 480V 3 Phase primary electric service supplies a commercial or industrial facility. 277v lighting circuits are single phase circuits using one of the 480v primary phases (A,B & C) to Neutral. The higher voltage allows more fixtures per circuit using smaller conductors and longer runs typically required in warehouse lighting applications. ( Amps = Watts/Volts: 400W/277V Fixture = 1.4 Amps, 400W/110V fixture = 3.6 Amps) With 480V 3 Phase primary service, 110V Single Phase power is created using a Step-down transformer. The voltage transformation process consumes power (kWh) and the 277V fixture will consume less kWh than a 110V fixture if identical wattage, especially in fixtures with ballasts such as fluorescent or High Intensity Discharge (HID), like Sodium, Metal Halide or Mercury Vapor.


What is 277 volts?

277 volts is the Hot to Neutral voltage in a 277/480 volt 3-phase "Y" electrical system. This is a commercial and industrial application voltage. The purpose of using higher voltages in these applications is to supply higher power levels [watts or kVA] than at lower voltages for the same size of conductor. <><><> A 277 volt service is used for industrial lighting. <><><> A 480 volt 3-phase power service is common in factories in USA and other countries which use 60 Hz ac electrical services. If you use the 480 volt service lines in the 'star' or 'Y' configuration you will have a central neutral point to connect a neutral line. You can then get a 277 volt single phase service by using one of the three phase lines along with that neutral


In a three phase four wire wye system having 277V for lighting the three phase motors operate on what voltage?

480 Volt


Can a 240 volt electric fan be run on 277 volts?

No...that's too much voltage, and 277v is normally three-phase power.