What is a permitted method of connection of grounding and bonding equipment?

Connections that are part of a listed assembly are a permitted method of bonding and grounding equipment. This is because listed assemblies are tested and verified to meet specific standards for safety and performance, ensuring that the connections are capable of withstanding the electrical loads and environmental conditions they will encounter. Utilizing these pre-approved assemblies enhances reliability and helps to maintain the effectiveness of the grounding and bonding system, which is critical for the protection of life and property by reducing the risk of electrical shock or fire hazards.

In contrast, while wire nuts, pipe clamps, and gel-filled bonding fasteners may be used in various applications, they do not necessarily provide the same level of assurance as connections that are part of a listed assembly. Each of these methods has specific uses, but they might not align with the stringent requirements or testing protocols that listed assemblies undergo, potentially compromising the efficacy of the grounding and bonding systems. Therefore, using connections that are designed and listed for the specific application is paramount for safety in fire alarm systems and other electrical installations.