A 240-volt service powers heavy-duty appliances like ovens, air conditioners, water heaters and electric dryers. If something goes wrong in that panel, it may cause those systems to fail, damage the ...

In the upcoming NFPA 70E 2024 Edition, the inclusion of the phrase “at each point of work” and the relationship to absence of voltage testing has prompted questions regarding the use of Permanent ...

Testing a circuit breaker is about judging reliability under fault conditions, not just checking continuity or voltage. A ...

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.” ...

Detection of uncontrolled electricity along city streets and sidewalks is a concern for many municipalities and utilities. The preferred method of identifying these locations is to seek out these ...

In Episode 39 of “EC&M Asks,” a video series featuring subject matter experts (SMEs) answering reader-submitted questions regarding popular electrical topics, Ron Widup, vice chairman, board of ...

Surge protection for an electrical panel controls how transient voltages enter and spread through branch circuits inside the ...