Are quick-connect terminals allowed on the AC grounding conductors?

Quick-connect terminals are not allowed on AC grounding conductors due to safety and reliability considerations. Grounding conductors play a critical role in electrical systems by ensuring that any fault current is safely routed to the ground, preventing potential electric shock hazards and equipment damage.

Using quick-connect terminals can introduce risks, as these terminals may not provide a solid and permanent connection. Over time, connections can become loose due to vibration, corrosion, or thermal cycling, which could compromise the grounding system's integrity. This is particularly crucial in marine and other environments where the reliability and performance of grounding systems are vital to safety.

While there may be discussions around alternative connection methods for different applications or circumstances, for standard AC grounding conductors, solid connections are mandated to maintain their effectiveness in protecting both equipment and personnel. For this reason, relying on quick-connect terminals in this application is not compliant with best practices and relevant electrical standards.