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 Post subject: Equipment perforations
PostPosted: Fri Aug 27, 2010 2:17 pm 

Joined: Fri May 08, 2009 10:54 am
Posts: 3
Many of our Switchboards have multiple perforations in the doors. Would this be considered the same as having the doors open


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PostPosted: Fri Aug 27, 2010 6:48 pm 
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Joined: Mon Jun 02, 2008 11:58 am
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Location: Charlotte, NC
crog333 wrote:
Many of our Switchboards have multiple perforations in the doors. Would this be considered the same as having the doors open


From an arc flash view, yes. From a shock hazard view, no.


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PostPosted: Sun Aug 29, 2010 11:54 pm 

Joined: Mon May 03, 2010 1:41 am
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Manufactured perforations in doors

We just had arc flash training on Saturday. Our instructor said that as long as the holes were installed by the manufacturer that we could use the tables for "Doors Closed". I disagree. As Zog stated. You can't touch something and get shocked but you are at an increased Arc flash hazard due to the perforations. I am going through the manufacturers literature to see if there is anything specific about the issue but it is doubtfull.


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PostPosted: Mon Aug 30, 2010 7:01 am 
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Joined: Mon Jun 02, 2008 11:58 am
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Data Center Electrician wrote:
We just had arc flash training on Saturday. Our instructor said that as long as the holes were installed by the manufacturer that we could use the tables for "Doors Closed". I disagree. As Zog stated. You can't touch something and get shocked but you are at an increased Arc flash hazard due to the perforations. I am going through the manufacturers literature to see if there is anything specific about the issue but it is doubtfull.


What is the difference between a hole made by the OEM and a hole made by someone else? Just would like to know the instructors thinking behind that one.


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