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Have you or anyone you know ever had a SERIOUS arc flash at 208 V 3 ph.< 125 kVA Xfmr
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ekstra   ara
 Post subject: 125 kVA - 208V / 240V Exception
PostPosted: Wed Jan 27, 2010 2:17 pm 
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Joined: Mon Sep 17, 2007 5:00 pm
Posts: 1702
Location: Scottsdale, Arizona
This is an extension of a previous thread about the exception for 208 and / or 240 volt (depends on the standard) circuits downstream from transformers less than 125 kVA.

I guess it is my turn to stir things up....

......again! :cool:

I have simple question:

How many people that visit this forum have actually had:

a significant arc flash (lab experiments don't count) from a 208 or 240 volt circuit downstream from a smaller transformer like 112.5 kVA or less


know someone who has seen this event?

I am curious to hear everyone's experiences with the low voltage arc flash so please vote in the survey.

Jim Phillips, P.E.

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