Can I electrically isolate appliances by putting them on separate legs of a split phase supply?

by matmat   Last Updated May 16, 2019 04:21 AM

In my office, I have a server (powered through a UPS) and a laser printer on the same circuit. When the laser printer turns on, the lights dim and the UPS will briefly switch to battery. This prematurely wears out the battery, and, if there were no UPS, would cause extra wear and tear on the server's power supply.

Can I electrically isolate these two from each other by putting them on separate legs of my house's split-phase power supply? In other words, do loads on one leg of a split-phase power supply affect loads on the other leg?

Possibly related answer here.

Tags : electrical load


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