Technical Standards and Safety Authority (TSSA) G3 Practice Exam

Which tool is essential for safely disconnecting electrical devices?

1. Insulated channel lock pliers

2. A wire stripper

3. Non-insulated pliers

4. A plug puller

The correct answer is: Insulated channel lock pliers

Insulated channel lock pliers are essential for safely disconnecting electrical devices because they are specifically designed to handle electrical work while minimizing the risk of electric shock. The insulation on the handles provides an extra layer of protection against electrical current, allowing the user to grip and manipulate wires or components without the danger of accidental contact with live circuits. This tool's design also allows for a secure grip, which is important when working with connectors or terminals that may be under tension or have limited space. The functionality of insulated channel locks makes them versatile for various tasks, including loosening or tightening nuts and bolts in electrical applications. Other tools listed may have their uses in electrical work, but they do not offer the same level of safety. For example, wire strippers are primarily meant for removing insulation from wires, and non-insulated pliers do not provide any electrical protection. A plug puller is designed for safely removing plugs from outlets but may not be as versatile or widely applicable in different scenarios involving electrical disconnections as insulated channel lock pliers.