A "floating neutral" in a three-phase system occurs when the neutral point of the system is not properly grounded or connected to a low-impedance ground. In a balanced three-phase system, the neutral point should be at or near ground potential. However, if the neutral connection is lost or becomes high impedance, the neutral voltage can shift away from ground, leading to voltage imbalances across the phases. The consequences of a floating neutral can be severe. Unequal phase voltages occur because the voltage to ground on each phase depends on the load connected to that phase. Lightly loaded phases will experience higher than normal voltages, while heavily loaded phases will experience lower voltages. This can cause equipment connected to the lightly loaded phases to be overstres....
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