Does a 3Ø, 3-W supply system delivering 480 volts have a neutral?

In a three-phase, three-wire (3Ø, 3-W) supply system, there is no neutral conductor present. This type of system consists of three phases, where each phase carries an alternating current that is offset by one-third of a cycle from the others, allowing for load balancing and efficient power distribution. Since there is no provision for a neutral wire in this configuration, the system can efficiently deliver 480 volts without a return path provided by a neutral.

The absence of a neutral means that the system is typically used for three-phase loads, such as motors and industrial equipment, that do not require a neutral for operation. In contrast, a three-phase, four-wire (3Ø, 4-W) system would include a neutral conductor, which is essential for providing single-phase power or for balancing unbalanced loads.

In this context, the other choices would misrepresent the configuration of a three-phase, three-wire system, as they imply the presence of a neutral where it does not exist. Thus, stating that a three-phase, three-wire supply system delivering 480 volts has no neutral is accurate.