Ground-fault protection and the multi-wire branch circuit (MWBC) are both common topics in the electrical industry. This article discusses their union — the use of a 2-pole GFCI/GFPE breaker to ...

Fig. 1. Basic single-phase circuit and load. As the load draws current, a voltage drop develops across the supply and return conductors. N-G voltage measurements at the load will reflect the voltage ...

In the former (AN954), the transformerless power supply’s circuit ground has high voltages with reference to neutral, and connecting it to earth would cause a dangerous situation.