Is a main bonding jumper located at a separately derived system?

The main bonding jumper is indeed located at a separately derived system, making this statement true. In electrical systems, a separately derived system is one that is not connected to the main electrical supply but is transformed from it, such as in the case of generators or transformers.

The main bonding jumper connects the grounded conductor (neutral) to the grounding electrode system at the point of the separation. This connection is crucial because it ensures that the neutral and grounding systems are tied together, establishing a reference point for the electrical system's voltage and enhancing safety by reducing the risk of shock hazard.

Grounding at a separately derived system is vital for the safe operation of electrical equipment and to provide a clear path for ground fault currents. In residential and commercial settings alike, this practice is imperative to maintain a safe and reliable electrical system. Thus, the main bonding jumper is a critical component in the grounding and bonding of any separately derived system.