Why DC testing is important, what tests are most common, and how preventive maintenance can make all the difference in preventing circuit breaker failure ...

A multimeter is a powerful tool for measuring electrical values such as voltage, resistance, and current, commonly used in automotive and household applications. This beginner’s guide will walk you ...

It's a must-have for any toolbox—but there's a learning curve involved. Learn how to use a multimeter for all of your electrical testing needs.

Organizing your electrical panel doesn't have to be intimidating. Find and label unknown circuits safely with these best ...

These three tests should be in your preventive maintenance program for medium-voltage circuit breakers: 1. Contact resistance test. Use a digital low-resistance ohmmeter (DLRO), not a digital ...

For all of you who have a multimeter thrown in a drawer or toolbox but don’t know how to use it, these instructions will help in your search for missing voltage.

Most circuit breakers have similar internal structures, which makes the technique broadly applicable. There are two types in the US, according to the Lab: bimetallic thermal and solenoid magnetic. The ...

In this article, I’ll show you how to use a multimeter to troubleshoot some basic electronic components, such as resistors.