Test Equipment
Electrical Test Equipment for Troubleshooting and Verification
Test equipment confirms what a circuit is doing before you touch it and helps you find faults fast. This collection is led by Milwaukee and Klein Tools. Milwaukee offers voltage detectors (2200-20, 2202-20, 2203-20 dual range), the 2216-20 and 2217-20 digital multimeters, a 2222-20 circuit breaker finder, a 2224-20 digital GFCI receptacle tester, a 2210-20 fluorescent lighting tester, clamp meters, and replacement test leads and alligator clips. Klein adds the MM400 auto-ranging multimeter, the ET310 breaker finder, the ET450 circuit tracer kit, and NCVT tester kits. Wiha supplies a Category IV non-contact voltage tester with flashlight.
What to Look For
- Job type. Non-contact testers check for live voltage. Multimeters measure it. Breaker finders and circuit tracers locate which breaker or wire feeds a load.
- Voltage range. Dual range detectors pick up both low-voltage and line-voltage circuits, which helps on mixed control and power work.
- Safety rating. Match the meter's CAT rating to the highest-energy circuit you work on, such as service panels.
- Kits vs singles. Kits pair a voltage tester with a receptacle tester, which is a practical first purchase.
The Tool Nut is a specialty tool store and authorized dealer in business since 1994. We offer free shipping on most orders, and every order earns rewards points.
Test Equipment FAQ
Do I need a multimeter or a non-contact voltage tester?
Most electricians carry both. A non-contact tester is a quick check that a wire or outlet is live before work starts. A multimeter gives actual readings for voltage, continuity, and resistance when you need to diagnose a fault.
What does a circuit breaker finder do?
A transmitter plugs into an outlet and the receiver scans the panel to identify the breaker that feeds it. It saves shutting off breakers one at a time. Some models, like the Klein ET310, also test GFCI outlets.