ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
Elk’s Lodge 11th hour ritual chime clock
by lemahj - 09/26/23 10:24 AM
Strange breaker tip problem
by gfretwell - 09/25/23 08:13 PM
An impossible Support Violation
by gfretwell - 09/12/23 04:29 PM
How are you Jersey folks about the windmills?
by gfretwell - 09/08/23 02:21 PM
Having trouble logging in?
by Admin - 09/01/23 10:26 AM
New in the Gallery:
This is a new one
This is a new one
by timmp, September 24
Few pics I found
Few pics I found
by timmp, August 15
Who's Online Now
1 members (Scott35), 14 guests, and 13 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
#150478 04/29/05 11:56 AM
Joined: Mar 2003
Posts: 849
Y
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
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
Joined: Mar 2003
Posts: 849
Y
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.

Joined: Jul 2002
Posts: 8,443
Likes: 3
Member
Yoopersup,
I've moved this thread into the Occupational Safety area where it might get more response.

Mike.
[Linked Image]


Link Copied to Clipboard
Featured:

Tools for Electricians
Tools for Electricians
 

* * * * * * *
2023 National Electrical Code (NEC)
2023 NEC + Exam Prep Study Guides Now Available!
 
* * * * * * *

2020 Master Electrician Exam Preparation Combos
2020 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
JoeKP
JoeKP
Berkley, MA
Posts: 144
Joined: March 2008
Top Posters(30 Days)
Popular Topics(Views)
311,123 Are you busy
237,512 Re: Forum
221,283 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5