Electrician's Licensing Practice Exam

Are shoulder fittings with locknuts acceptable as bonding devices?

1. Yes, they are acceptable

2. No, they are not acceptable

3. Only in specific installations

4. Yes, but only if certified

The correct answer is: Yes, they are acceptable

Shoulder fittings with locknuts are indeed deemed acceptable as bonding devices in electrical installations. The main purpose of bonding is to ensure that all metallic parts are at the same electrical potential, reducing the risk of electric shock and ensuring the safe operation of electrical systems. Shoulder fittings, when used with locknuts, provide a secure connection that promotes effective electrical continuity. The design of these fittings allows for a solid mechanical connection, which is essential for effective bonding. The locknut ensures that the fitting remains tight over time, preventing any potential loosening that could compromise the bond. This adherence to a secure connection aligns with industry standards, which stipulate that bonding connections must be reliable to maintain safety in electrical systems. In addition, bonding devices should meet specific code requirements, which often includes providing secure metallic connections. Shoulder fittings satisfy these requirements, making them a practical choice for electricians ensuring compliance with safety standards and regulations.