Squirt spray lubricant where the shaft comes out of the fan motor. Spin the motor shaft by hand to see if it sounds better. Add more spray lubricant if the squealing sound persists. Reinstall the fan ...

To find the right circuit in the electrical panel, you first plug the socket tester into a socket. Then you go to the panel ...

Everything starts with the design. Engineers review every PCB file carefully, checking trace widths, spacings, and hole sizes ...

Compared to a traditional miniature circuit breaker (MCB), an electronic circuit breaker (ECB) with integrated eFuses offers ...

High voltage circuit breakers are often designed using multiple interrupting chambers connected in series for each pole/phase. These breakers need to undergo type tests and development tests.

Is there a circuit breaker in your home that keeps tripping? It may need to be replaced. Fortunately, testing and replacing a breaker is something you can do.

Circuit breakers were triggered on four separate trading days: March 9, 12, 16 and 18. The Dow Jones Industrial Average DJIA was last down over 1,600 points, trading 4% lower at last check Friday.

Test buttons: Use the test buttons whenever you want to test a GFCI or AFCI breaker. Simply press the button to disrupt the electrical current, then check to see if the breaker tripped as intended.