Remember, circuit breakers usually trip for a reason. Taking a methodical approach to determine the cause is the best way to provide a solution.

Diagnose electrical problems by chasing voltage drops, instead of the old-fashioned way -- checking continuity. Including Mike Allen's Physics 101 introduction to Ohm's law.

When clients call you because operating problems on pieces of their 120V equipment cause them to suspect their facility's power supply, you have to decide where to start your investigation. Don't ...

Don't take the expensive route and simply throw parts at the problem. Instead, take the time to properly diagnose the troubled circuit.