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Arc Flash Understanding?? #150478 04/29/05 10:56 AM
Joined: Mar 2003
Posts: 849
Y
Yoopersup Offline OP
Member
Can anyone give me a common sense way of understanding the Arc Flash calulations.

In Layman terms.

Arc Flash PPE Clothing, LOTO & Insulated Tools
Re: Arc Flash Understanding?? #150479 04/29/05 02:02 PM
Joined: Mar 2002
Posts: 582
R
Ron Offline
Member
Unfortunately there is no layman's version of arc flash calcs.
If you understand what an arc flash is (essentially a fault that uses the air as a conduction path resulting in heat, molten metal, light, sound, shrapnel, etc), then the calc tell us how much energy is may occur during one of them. With that incident energy, we can pick proper protective equipment.
Are you looking for actual formula? Have you reviewed NFPA 70E?


Ron
Re: Arc Flash Understanding?? #150480 05/01/05 10:12 PM
Joined: Mar 2003
Posts: 849
Y
Yoopersup Offline OP
Member
Yep gone thur 70e Thats why I asked , seems likes in somewhat simple terms its rms with trip rating mixed in. But theres gotta be a better way to explain it to the average electrican in the field.

Re: Arc Flash Understanding?? #150481 05/05/05 02:14 PM
Joined: Jul 2002
Posts: 8,346
Trumpy Offline
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Yoopersup,
I've moved this thread into the Occupational Safety area where it might get more response.

Mike.
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