Which of the following is an approved means to achieve the indicated torque values?

Achieving the indicated torque values is critical for ensuring the safety and reliability of electrical installations as defined by the National Electrical Code (NEC). Using approved methods to apply the correct torque is essential to avoid issues such as equipment failure or electrical hazards.

Torque tools are specifically designed to apply a precise amount of torque to connections, ensuring that joints are neither under-tightened nor over-tightened. This precision is vital for maintaining electrical contact and mechanical stability in wiring and connections.

Breakaway-style devices function by providing a consistent torque setting through a designed failure point that disengages once the proper torque is achieved. This ensures that the connections are made to the required specifications without risking overtightening, which can damage the components.

Shear bolts work by shearing off at a predetermined torque level, ensuring that the assembly achieves the correct tightness. This method is particularly useful in applications where maintenance and adjustments are less frequent, as it guarantees that the initial connection is set correctly without the need for continuous monitoring.

By incorporating a range of approved methods, including torque tools, breakaway-style devices, and shear bolts, the installation can be performed safely and effectively, thereby allowing for the successful attainment of the required torque values. Thus, the option indicating that all of these methods