ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
twh 3
Recent Posts
Nec circuit protection
by gfretwell. 11/21/17 11:01 PM
FPE in Germany
by Texas_Ranger. 11/19/17 07:30 AM
Ceiling fan distance from outdoor hot tub
by gfretwell. 11/16/17 02:18 AM
diazed fuses
by Texas_Ranger. 11/13/17 03:02 PM
Theft deterrent alarm
by gfretwell. 11/12/17 01:39 PM
New in the Gallery:
Gallery Test
Popular Topics(Views)
242,613 Are you busy
178,808 Re: Forum
170,047 Need opinion
Who's Online Now
0 registered members (), 13 guests, and 8 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#171436 - 11/28/07 07:40 AM Panel as a raceway  
sudsy4  Offline
Member
Joined: Apr 2002
Posts: 32
Elizabeth,PA USA
I am increasing the service at a commercial retail store from 1200amp to 3000amp. We are installing the new service equipment directly outside from the existing, some of the circuits from the existing will be fed from the new. Can I use the existing panel as a wireway to the new panel if the space in the panel permits? The two panels will be joined by 4inch nipples through the backs.

Thanks for any help

Bill


Bill

2017 / 2014 NEC & Related Books and Study Guides

#171459 - 11/28/07 03:17 PM Re: Panel as a raceway [Re: sudsy4]  
earlydean  Offline
Member
Joined: Dec 2003
Posts: 751
Griswold, CT, USA
Among a great number of other things, Section 408.2 requires panelboards to also comply with Article 312.
Section 312.8 requires enclosures for OC devices to provide adequate space for conductors feeding through or tapping off by filling the wiring space at any cross section to no more than 40% fill for conductors, and the conductors, splices and taps no more than 75% of the cross sectional area of that space.

If you have the room, then the existing panel can be used to splice extensions into the new panel.


Earl

#171494 - 11/29/07 11:15 AM Re: Panel as a raceway [Re: earlydean]  
JValdes  Offline
Member
Joined: Jun 2007
Posts: 301
South Carolina
Yes, again. Take out all the guts.


#171499 - 11/29/07 02:57 PM Re: Panel as a raceway [Re: JValdes]  
sudsy4  Offline
Member
Joined: Apr 2002
Posts: 32
Elizabeth,PA USA
Thanks for the help, I was pretty sure it was OK but was unsure of the code section; 312.8 was what I needed to convince the owner.

Thanks again


Bill


Member Spotlight
Theelectrikid
Theelectrikid
Levittown, PA
Posts: 810
Joined: April 2004
Show All Member Profiles 
Featured:

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.011s Queries: 15 (0.003s) Memory: 0.7592 MB (Peak: 0.8913 MB) Zlib enabled. Server Time: 2017-11-22 09:08:53 UTC