What is the grounded conductor usually referred to in grounding panelboards on the load side of the service disconnecting means?

The grounded conductor refers to the conductor that is intentionally connected to the ground and serves to carry current under normal conditions. In the context of grounding panelboards on the load side of the service disconnecting means, the grounded conductor is typically the neutral conductor. This conductor is designed to provide a return path for electric current and establish a reference point for the electrical system's voltage.

In residential and commercial electrical systems, the neutral conductor is bonded to the ground at the service entrance, which helps stabilize the voltage and provides a path for fault currents in the event of an electrical fault. This connection between the grounded conductor and the ground enhances safety by reducing the risk of electric shock and fire hazards, as it ensures that any fault current has a clear path to ground.

Understanding this concept is vital for ensuring compliance with electrical codes and safe installation practices.