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 Post subject: inadequate interrupting rating
PostPosted: Sat Jun 18, 2011 7:57 am 

Joined: Fri Jan 30, 2009 10:04 am
Posts: 10
Location: Toronto
Arc flash category of a 600V lighting panel calculated based on upstream protective device clearing time is Cat 0. But the breakers of the lighting panel are inadequate in terms of interrupting rating. How should I label this panel?


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PostPosted: Sat Jun 18, 2011 2:14 pm 

Joined: Sat Jul 26, 2008 5:00 pm
Posts: 29
I believe this was covered recently at the following thread.

[url="http://arcflashforum.com/showthread.php?t=1739"]Overdutied Breaker Thread[/url]


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PostPosted: Mon Jun 20, 2011 8:01 am 

Joined: Fri Jan 30, 2009 10:04 am
Posts: 10
Location: Toronto
Thanks for the information


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