What type of system is formed when a 3Ø generator has a neutral connection?

When a three-phase generator has a neutral connection, the system is referred to as a three-phase, four-wire system. This configuration includes three phase conductors and one neutral conductor, allowing for the distribution of balanced loads as well as the capability to supply single-phase loads from the neutral point.

The neutral wire plays a crucial role in maintaining the stability of the system and provides a return path for currents in unbalanced load situations, which is common in many practical applications. Therefore, the presence of the neutral conductor is what distinguishes this configuration from other three-phase systems that may not incorporate a neutral, such as a three-phase, three-wire system, which does not have a neutral connection.

This type of system is commonly used in residential and commercial settings because it allows for flexibility in supplying both three-phase and single-phase loads while enhancing safety and system performance.