Are listed splice connectors allowed to be used when extending a grounding electrode conductor?

Listed splice connectors are indeed permitted for use when extending a grounding electrode conductor. The use of these connectors meets safety standards and ensures that the electrical connection is reliable and secure. Grounding electrode conductors are critical for providing a low-resistance path to ground, which helps in protecting people and equipment from electrical faults.

The National Electrical Code (NEC) allows the use of listed connectors because they have been tested and approved for specific applications, ensuring they can handle the electrical and mechanical stresses they will encounter. By using these connectors, electricians can be confident that the splice will maintain the integrity of the grounding system over time, which is essential for the continued safety and performance of the electrical installation.

Bear in mind that while listed splice connectors are acceptable, they must be installed according to the manufacturer's recommendations and in compliance with local codes to ensure full safety and effectiveness.