In a 277/480-volt, 3Ø, 4-W supply system, what does the coil current equal?

In a 277/480-volt, 3-phase, 4-wire supply system, the coil current refers to the line current, which is represented as IL. In a 3-phase system, the coil current is equal to the current flowing through one phase of the winding or coil. This makes line current an essential characteristic for understanding how much current each phase of the system carries.

In this context, the relationship between phase and line voltages and currents is crucial. The line current (IL) in a balanced 3-phase system can be used to calculate the total power, voltage drops, and to ensure that the system operates within its rated parameters.

The other choices present calculations or values that are not directly representative of the coil current in this circuit. For example, dividing the line voltage by 1.732 is a method used to find phase voltage from line voltage, but it does not address the coil current directly. Similarly, specifying certain amperage or kilovolt-amperes does not give a general value for the coil current without additional context. Therefore, recognizing that IL directly refers to the coil current in a 3-phase system helps clarify the relationship and makes it the correct choice.