Arc Flash & Electrical Safety News

Blog Author Steve Hudgik

Monday, September 15, 2008

Understanding Ground Fault Protection

There is a good article by Ken Cybart of Littelfuse in today's Plant Engineering Live. It provides an overview describing ground fault monitors. The article begins by discussing the causes of ground faults:

"Simply put, a ground fault occurs when electrical current finds a bridge to ground via worn insulations, conductive dusts, water or other “soft grounds,” instead of the normal path back to its source. More than 80% of short circuits in equipment are ground faults, and 90% of these events are due to insulation deterioration on wires and cables."

The article then discusses Ground Fault Circuit Interrupters (GFCIs) and Ground Fault Relays (GFRs). You can read the complete article at:

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