120 Vs 277 Voltage

In the long run if done properly this leads to economies of scale and.

120 vs 277 voltage.

120v is also the voltage often used in industry for controls. Some ballasts operate from 277 to 480 volts or 347 to 480 volts sent from my iphone using tapatalk. Therefore a 277 volt 20 amp circuit can be well over twice as long as a 120 volt 20 amp circuit before voltage drop requires larger conductors. The voltage from ground to each of the three phases is always the phase to phase voltage divided by the square root of 3 which is equal to 1 73.

For example 120v 277v will operate on any voltage between 120v and 240v. Another us standart is 480 277v the relationship is the same or 277 3 5 480v. Yes there can be any voltage you want. 120v is the common domestic voltage although this is usually one leg of a 240v secondary that has a centre tap neutral.

Here in the us a 480y 277 volt electrical service is very common almost any building of good size in my area will have a 480y 277 volt service and that will be used to supply as much of the loads as possible motors machinery lighting etc. 3 of 277 volts is about 8 3 volts. The relationship between the two is 3 5 or 120 3 5 208v. In europe the 3 phase voltage is between 400v and one phase 230v or 230 3 5 400v.

3 of 120 volt is of course 3 6 volts. With intellivolt technology many philips advance ballasts maintain constant light output through nominal input voltage ranges of 120 to 277 volts thereby compensating for any change in input voltage. The main advantage of 277v. In western canada 347 600v is common.

So 208 divided by 1 73 equals 120 volts and 480 divided by 1 73 equal 277 volts. Lighting circuits assuming 277v is readily available is that you have less voltage drop the means to do longer runs from panelboard to fixture and more fixtures can be attached per circuit breaker vs. In larger facilities the voltage is 277 480 volt and used to power single phase 277 volt lighting and larger hvac loads. 277v is the line to neutral voltage on a 480v 3 phase system.

120v is also the line to neutral voltage of a 208v 3 phase system. About the driver shown in the photo above. The most common commercial building electric service in north america is 120 208 volt wye which is used to power 120 volt plug loads lighting and smaller hvac systems. The driver in the photo above is from a led bollard light and is marked input 100 240vac and 277vac.