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Subject: Ground Fault Breakers tripping on computer loads

Date: 11/09/99
Posted by: Perk
E-mail: Perk1(at)rbnet(dot)com(no spam)
URL: http://


I was recently asked to swap out the breakers in a computer/telephone room for a phone center of a major electrical component firm. The equipment in the room consisted of PC's, phone switches, and file server related equipment. The GFI's would trip immediately after the equipment was turned back on. (resistive loads worked just fine) What causes this and what could be done to correct it. I know that GFCI breakers are for safety, not equipment protection, but the mains in this facility are ground fault protected and they wanted to avoid the possibility of tripping them for a local fault.

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