ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
Canada for the win
by gfretwell - 12/06/22 08:28 PM
Tiny Homes and the NEC
by gfretwell - 12/06/22 01:43 AM
EMC Glands on Motors
by Trumpy - 12/01/22 06:12 AM
Ground Rods: Installation and Hook-Up
by Trumpy - 12/01/22 05:54 AM
Happy Thanksgiving all!
by gfretwell - 11/30/22 05:55 PM
New in the Gallery:
240/208 to a house
240/208 to a house
by wa2ise, October 9
Now you know.
Now you know.
by Tom_Horne, September 7
Who's Online Now
0 members (), 36 guests, and 10 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
#150478 04/29/05 10:56 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: 8,432
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 Now Available!
 
* * * * * * *

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

 

Member Spotlight
electure
electure
Fullerton, CA USA
Posts: 4,289
Joined: December 2000
Top Posters(30 Days)
Trumpy 6
NORCAL 3
Popular Topics(Views)
300,614 Are you busy
230,296 Re: Forum
215,079 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5