Arc Flash & Electrical Safety News

Blog Author Steve Hudgik

Tuesday, February 06, 2007

Exceeding the Short Circuit Rating of Equipment

A series of photographs on the Ferraz Shawmut, Inc. web site show how magnetic forces in bus bars can result in an arc flash. The test and the resulting photographs are described on the web site as:

"The images illustrate how current flowing in opposite directions through parallel bus bars can create a repulsive force between them, causing them to distort or even break away. When the bus bars contact other conductors or grounded components, an explosive arc fault is initiated."


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