Electrical Inspection, Testing and Certification Practice Exam 2025 – Comprehensive All-in-One Guide for Exam Success!

Torque testing is essential for verifying that electrical connections are secure. It involves applying a specific amount of rotational force to the connection to ensure that it is tightened to the manufacturer’s specifications. Proper torque ensures that connections maintain adequate contact and do not come loose during operation, which is critical for preventing failures that can cause overheating or electrical arcing.

When connections are not properly torqued, the contact resistance can increase, potentially leading to unreliable connections. Torque testing is commonly used on high-stakes equipment where any loss of electrical integrity can have serious consequences. By ensuring connections are within the correct torque specifications, technicians help promote electrical safety and performance.

In contrast, voltage testing is used to check the presence and level of electrical voltage in a circuit, resistance testing gauges the resistance of electrical components, and insulation testing assesses the integrity of insulation on conductors, but none of these directly verify the mechanical tightness of electrical connections as effectively as torque testing does.