When a grounding electrode conductor is installed in a metal raceway, is it required to be bonded to both ends?

In the context of grounding electrode conductors installed in metal raceways, bonding the conductor to both ends is not a requirement. The primary purpose of a grounding electrode conductor is to provide a low-impedance path to ground for fault currents, which is effectively achieved by the path provided through the metal raceway itself, as long as the raceway is properly bonded.

When a grounding electrode conductor is installed in a metal raceway, the raceway is typically considered a grounding path, thereby negating the necessity to bond the grounding electrode conductor at both ends. However, it is important that the raceway itself is adequately bonded to ensure the entire system is effective for grounding purposes. The decision not to require bonding at both ends simplifies installations and adheres to the practical aspects of electrical systems where raceways are inherently designed to serve as grounded components.

To summarize, bonding at both ends of a grounding electrode conductor within a metal raceway is not generally required because the raceway’s bonding suffices to establish an effective grounding connection.