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

Topic Options
Rate This Topic
#83423 - 01/30/03 01:06 PM Cable Tray
mountainman Offline
Member
Registered: 01/29/02
Posts: 54
Loc: Richmond Va. U.S.A.
I am refering to the 1996 NEC Handbook, on page 255 article 318-11 the book has a diagram 318-3 shows a one cable distance between each cable. I cannot find a code reference that says you shall maintain one cable width between each cable. What I have is MC cable with 4 5ookcmil conductors. Is there a mandatory spacing requirement, and if so what is the code reference. Thanks Joe
Top
2017 / 2014 NEC & Related Books and Study Guides
#83424 - 01/30/03 01:55 PM Re: Cable Tray
txsparky Offline
Member
Registered: 05/25/01
Posts: 552
Loc: Magnolia,.Texas U.S.A.
I dont have my 96 with me but in the 99NEC 318-11 the spacing is allowed for ampacity reasons(derating)

[This message has been edited by txsparky (edited 01-30-2003).]
_________________________
Donnie
Top
#83425 - 01/30/03 02:05 PM Re: Cable Tray
Redsy Offline
Member
Registered: 03/28/01
Posts: 2056
Loc: Bucks County PA
The spacing configuration you refer to permits ampacities in accordance with Table B.103.3 in Annex B of the '02 code.
Otherwise, 392.9 refers to tray fill based on cable sizes.

[This message has been edited by Redsy (edited 01-30-2003).]
Top
#83426 - 01/31/03 06:27 AM Re: Cable Tray
JBD Offline
Member
Registered: 07/12/01
Posts: 599
Loc: WI, USA
FYI - There is a website with application answers, sponsored by cabletray manufacturers - http://www.cabletrays.com/
Top

Member Spotlight
Member Since: 11/17/00
Posts: 2232
New in the Gallery:
SE cable question
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box


Who's Online
1 registered (cableguy619), 64 Guests and 7 Spiders online.
Key: Admin, Global Mod, Mod
 
New in the Gallery:
SE cable question
 
Top Posters (30 Days)
Admin 51
HotLine1 43
gfretwell 17
Trumpy 16
Ruben Rocha 13
 
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