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Flickering across a tenancy is rarely the lamps alone. How to tell a failing driver or ballast from a circuit, a dimmer or a supply problem.

Most commercial lighting needs a documented inspection and cleaning twice a year, with a driver or lamp service cycle set by the fixture type.

A clear-sky outage almost always has one of two causes. The fastest way to tell them apart is to look outside.

A three phase panel is a breaker panel fed by three energized conductors instead of one or two.

A home standby generator needs professional service once a year, and most manufacturers, including Generac.

When one room loses power and the rest of the house is fine, the utility is not the problem. The circuit feeding that room has opened.

A standby generator that will not start or will not stay running usually comes down to one of five things. The battery is the first thing to suspect.

A red light on a Generac home standby generator means the unit has shut down or will not start, and it has stopped protecting your house.

A Powerwall shows “offline” when the Tesla app cannot reach it, which is usually a communication problem rather than a dead battery.

A transfer switch that will not move power from the utility to your generator is usually failing for one of five reasons.