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Many commercial buildings in the US are supplied with 480 V, three-phase utility power. The phase to neutral voltage of a 480 V system happens to be 277 V. 277 V lighting can be fed directly, eliminating the need for additional Transformers and related gear.
What else can I help you with?
What is the purpose of 277 volts AC?
Commercial lighting. In a facility where 3 phase 480 volts is needed for machinery, 277 is also readily available because each leg of 480 to ground is 277 volts. This way numerous supply transformers are not needed in a commercial building.
What voltage reading would you get from a 277 480 volt system?
From a three phase four wire distribution system the voltages would be as follows. From L1 to N - 277 volts. From L2 to N - 277 volts. From L3 to N - 277 volts. From L1 to L2 - 480 volts. From L2 to L3 - 480 volts. From L3 to L1 -480 volts.
Will a switching power supply work on 277 volts?
Not unless it is rated for that voltage. You can likely find a step down transformer from 277 volt sto 120 volts.
What is 277 volts?
Oh, dude, 277 volts is like the amount of electrical pressure or force in a circuit. It's like when you're trying to charge your phone, but on a much larger scale. So, if you're dealing with 277 volts, just make sure you're careful, or you might end up with a shocking experience.
Can you get 120 volts from a 480 volts 3 phase Y generator?
NO, the 480 Volts Y -- is 4 wire system, with three wires which are hot legs @ 480 volts between each three hot legs. A mid tap is a neutral leg (ground) the white wire. Which gives 277 volts between it and any of the three hot legs. so a 4wire 480 volt Y system. Gives 480 /277 volts.
What is the purpose of 277 volts AC?
Commercial lighting. In a facility where 3 phase 480 volts is needed for machinery, 277 is also readily available because each leg of 480 to ground is 277 volts. This way numerous supply transformers are not needed in a commercial building.
What potential will you have with 120 volts and 277 volts in same encloser?
The potential for someone to come along later on and get the wires mixed up causing damage to electrical appliances or lights.
What voltage reading would you get from a 277 480 volt system?
From a three phase four wire distribution system the voltages would be as follows. From L1 to N - 277 volts. From L2 to N - 277 volts. From L3 to N - 277 volts. From L1 to L2 - 480 volts. From L2 to L3 - 480 volts. From L3 to L1 -480 volts.
Is 277 volt one hot wire?
No, 277 volts is the line to neutral of a 480 volt wye three phase system. L1- N, L2 - N and L3 - N will give you 277 volts. L1 to L2. L2 to L3 and L3 to L1 will give you 480 volts.
Can you run 220 volt appliances off a 380 volt supply?
you could use a step down transformer if you had no other option. but the best thing to do is run a 220 feed directly from the fuse panel Step down transformers get very hot and do not last forever
Will a switching power supply work on 277 volts?
Not unless it is rated for that voltage. You can likely find a step down transformer from 277 volt sto 120 volts.
In WYE 480VAC each leg to neutral is equal to how many volts?
In WYE 480 VAC each leg to neutral is equal to 277 volts. 480 / 1.73 (sq root of 3) = 277.
Can you get 110 volts from 277volts?
The voltage of 277 is the wye connection of a 480 volt three phase supply. The only way to reduce 277 to 120 volts is with a step down transformer.
How do you come up with 277 volts?
The star point or wye voltage of a 480 volt three phase four wire system is 277 volts. The 480 voltage is divided by the sq root of 3 (for 3 phases). The sq root of 3 is 1.73. 480 volts/1.73 = 277 volts. The same formula is used on all three phase four wire systems. 208 volts /1.73 = 120 volts, 416 volts /1.73 = 240 volts, 600 volts / 1.73 = 347 volts.
How can 240 vOLTS power a 277 vOLT light?
Slightly dimmly
What is a 277 volt fluorescent fixture?
A 277 volt lighting fixture is one that is usually used in an industrial application. The reason for this is the voltage rating. A voltage potential of 277 volts is the voltage to neutral (ground) of a three phase four wire 480 volt distribution system. 480 volts / 1.73 = 277 volts. Rather than having to add a transformer to the system to provide 120 volts for lighting, manufactures produced a ballast for fluorescent fixtures that operates on the 227 volt potential.
How do you read 277 volts on meter?
To read 277 volts on a meter, simply ensure the meter is set to the appropriate voltage scale (typically AC). Then, connect the meter leads to the circuit or outlet you are measuring. The display should show the voltage reading, which in this case would be 277 volts. Be sure to take appropriate safety precautions when working with electricity.
