What is required when using an intersystem bonding termination (IBT) for connecting bonding conductors?

The requirement for using an intersystem bonding termination (IBT) is that it must be listed as grounding and bonding equipment. This listing ensures that the IBT has been tested and meets specific standards for safety and performance. Grounding and bonding equipment are crucial components of electrical systems, as they provide a common grounding point that minimizes potential differences among various systems, which can prevent electrical surges and protect both equipment and individuals.

The necessity for equipment to be listed means it has undergone stringent assessments by recognized testing laboratories. These ensure that the materials and designs used will operate safely under specified conditions. It's essential to use a product that has been verified to comply with the standards set forth by relevant codes and regulations.

The other options highlight stipulations that do not align with the requirements or standards for IBTs. For example, it's not a requirement for the IBT to be hidden from view, used solely indoors, or restricted to copper materials. Instead, the emphasis lies fundamentally on the appropriate listing for safety and effectiveness in grounding and bonding applications.