Before using electrical testing tools you need know(1)

Many people use electrical testing tools in daily life, here are some things you must know as followings：

1. Use common sense. Before you begin, take a closer look at your equipment and accessories. Do they look busted and broken down? If you wouldn’t loan the tool to someone else to use, you shouldn’t use it yourself.

2. Inspect leads. Before using test leads, perform an inspection to ensure the leads can safely and accurately conduct electricity for the job at hand. Be sure your leads have:

Shrouded connectors.

Finger guards.

CAT ratings that equal or exceed those of the meter.

Double insulation.

Minimum exposed metal on the probe tips.

3. Continuity testing. Use the meter’s own continuity testing function to check for internal breaks. Check test lead resistance by:

Inserting leads in V/Ω and COM inputs.

Selecting Ω, touching probe tips and being sure the leads are 0.1 – 0.3Ω.

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