ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals

Topic Options
Rate This Topic
#148471 - 04/29/05 08:56 AM Arc Flash Understanding??
Yoopersup Offline
Member
Registered: 03/04/03
Posts: 822
Loc: Michigan
Can anyone give me a common sense way of understanding the Arc Flash calulations.

In Layman terms.
Top
Arc Flash PPE Clothing, LOTO & Insulated Tools
#148472 - 04/29/05 12:02 PM Re: Arc Flash Understanding??
Ron Offline
Member
Registered: 03/13/02
Posts: 582
Loc: White Plains, NY
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
Top
#148473 - 05/01/05 08:12 PM Re: Arc Flash Understanding??
Yoopersup Offline
Member
Registered: 03/04/03
Posts: 822
Loc: Michigan
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.
Top
#148474 - 05/05/05 12:14 PM Re: Arc Flash Understanding??
Trumpy Offline


Member
Registered: 07/05/02
Posts: 8211
Loc: SI,New Zealand
Yoopersup,
I've moved this thread into the Occupational Safety area where it might get more response.

Mike.
_________________________
Let's face it, these days if you're not young, you're old - Red Green grin
Top

Member Spotlight
Member Since: 07/05/02
Posts: 8211
New in the Gallery:
SE cable question
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box


Who's Online
0 registered (), 51 Guests and 9 Spiders online.
Key: Admin, Global Mod, Mod
 
New in the Gallery:
SE cable question
 
Top Posters (30 Days)
Admin 79
HotLine1 51
Ruben Rocha 29
gfretwell 25
Trumpy 20
 
Newest Members
clee512, Jdscott2005, FAIZAN, Regitest2, sureshazhagai

ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals