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ekstra   ara
 Post subject: Arc Flash and DC current
PostPosted: Thu Apr 10, 2008 11:38 am 
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Joined: Thu Apr 10, 2008 10:52 am
Posts: 1
If an employee is opening a panel containing 4160v switch gear to open the 250v DC control and then shut the door to hook up a remote rack in device to rack out the breaker or to close the 250v DC control when the breaker is racke in. Is this operator required to wear an Arc Flash suit?


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PostPosted: Thu Apr 10, 2008 4:02 pm 
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Joined: Thu Jan 10, 2008 8:49 pm
Posts: 480
Location: New England
I would think once you open the door, there is an exposure issue.


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PostPosted: Thu Apr 10, 2008 5:40 pm 
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Joined: Sun Dec 23, 2007 1:44 pm
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Location: Charlotte, NC
I would say that if there is no exposed 4160 when opening the door, and you are killing or heating up the DC, since it is over 50 volts, you might need to consider the exposure from that source, but not the 4160.

Alan


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PostPosted: Mon Jun 02, 2008 1:05 pm 
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Joined: Mon Jun 02, 2008 11:58 am
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Location: Charlotte, NC
acobb wrote:
I would say that if there is no exposed 4160 when opening the door, and you are killing or heating up the DC, since it is over 50 volts, you might need to consider the exposure from that source, but not the 4160.

Alan



Agreed, as long as there are barriers.


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