Comments on: High Fault Contribution may not be a bad thing http://www.sparkyresource.com/2009/high-fault-contribution-may-not-be-a-bad-thing/ What you want to know about Arc Flash, NFPA 70E, and more Wed, 28 Oct 2009 01:29:46 +0000 http://wordpress.org/?v=2.9.2 hourly 1 By: Jeff http://www.sparkyresource.com/2009/high-fault-contribution-may-not-be-a-bad-thing/comment-page-1/#comment-733 Jeff Wed, 28 Oct 2009 01:29:46 +0000 http://www.sparkyresource.com/?p=20#comment-733 I suppose that's right. Typically however when you are doing coordination for a 3 phase fault this is assumed. Most internal faults within equipment will approach a bolted fault when there is enough arcing between the busses (one "s" or two, I never know) from ionized air and vaporized copper if the fault is large enough. I suppose that’s right. Typically however when you are doing coordination for a 3 phase fault this is assumed.

Most internal faults within equipment will approach a bolted fault when there is enough arcing between the busses (one “s” or two, I never know) from ionized air and vaporized copper if the fault is large enough.

]]> By: The Velvet Cyclone http://www.sparkyresource.com/2009/high-fault-contribution-may-not-be-a-bad-thing/comment-page-1/#comment-732 The Velvet Cyclone Wed, 28 Oct 2009 00:32:35 +0000 http://www.sparkyresource.com/?p=20#comment-732 Better coordination, of course, assumes a bolted fault. Better coordination, of course, assumes a bolted fault.

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