Question 1

A Closer Look at Humming: Is It Normal or a Warning Sign?

Accepted Answer

Of all the sounds your electrical system can make, a low, steady humming is one of the most common. In some cases, it’s perfectly normal. For instance, the large transformers used by utility companies like Duquesne Light and West Penn Power produce a constant hum as they step down high-voltage e

Question 2

Clicking Breakers: Overload or a Sign of a Deeper Problem?

Accepted Answer

A distinct “click” from your electrical panel followed by a loss of power to part of your home means a circuit breaker has done its job and tripped. This is a safety feature designed to prevent circuit overload. If you plug too many high-power devices into a single circuit—say, a space heater and a

Common Electrical Noises and What They Mean