While using a digital multimeter to diagnose electrical problems on customers’ equipment, I frequently hear the comment, “I’ve got one of those multimeter things, but I never learned how to use it.” ...

An older couple taking a look at their circuit breaker box - Coldsnowstorm/Getty Images Circuit breakers can be frustrating. You're happily bopping through your day, perhaps craving an English Muffin, ...

When your car doesn’t start, often a low or dead battery is the culprit. Unfortunately, most vehicle owners do not check their battery until it fails. As preventative maintenance, the suggested best ...

Table 100.19 from ANSI/NETA MTS-2011 provides recommended test voltages for proof testing and field testing medium-voltage power circuit breakers and switchgear. These three tests should be in your ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? A digital multimeter is an indispensable tool for testing, diagnosing, and ...

Test equipment doesn’t tell you everything. In fact, to get usable information from it, you have to know what you’re looking for, how to measure it correctly, and how to interpret what you’re ...