If a 3Ø generator outputs 240 volts line-to-line with a neutral connection, what type of system is it?

A three-phase generator that outputs 240 volts line-to-line with a neutral connection is classified as a three-phase, four-wire (3Ø, 4-W) system. This configuration includes three phase conductors and one neutral conductor, allowing for the provision of both three-phase loads and single-phase loads.

The presence of the neutral allows for effective grounding and provides a return path for unbalanced loads, which may occur when single-phase loads are connected to any of the phases. This enhances the versatility of the system, as it can effectively power both types of loads while ensuring safety and reliability in operation.

Three-phase systems are commonly employed in commercial and industrial applications because they deliver power more efficiently than single-phase systems. In contrast, options like three-phase, three-wire systems do not include a neutral conductor, making them unsuitable for configurations requiring a neutral. Single-phase and dual-phase systems also lack the distinct three-phase structure that characterizes the given generator.