The Electrical Contractor Network

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

Books, Tools and Test Equipment for Electrical and Construction Trades

Register Now!

Register Now!

We want your input!


2017 NEC and Related
2017 NEC
Now Available!

Recent Posts
Parking lot pole light swap....
by ghost307
Today at 06:25 AM
International Wire Colour Codes
by Tjia1981
Yesterday at 12:08 PM
Son of Sparky
by HotLine1
10/20/16 07:43 PM
Speaking of Plugmold ...
by gfretwell
10/17/16 02:37 PM
Broken battery charger? Check for cobwebs!
by gfretwell
10/17/16 02:30 PM
New in the Gallery:
12.5A through 0.75mm˛ flex (just out of curiosity)
Shout Box

Top Posters (30 Days)
gfretwell 13
HotLine1 7
ghost307 7
renosteinke 6
Potseal 4
Who's Online
0 registered (), 262 Guests and 4 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#91700 - 01/31/05 09:11 AM line and load, and derate
ronaldsax Offline
Junior Member

Registered: 06/26/04
Posts: 6
Loc: west palm beach,fl
I just have 2 quick questions
can I have line and load in the same raceway?
and what is derating?

thank you

2014 / 2011 NEC & Related Books and Study Guides
#91701 - 01/31/05 12:53 PM Re: line and load, and derate
Yoopersup Offline

Registered: 03/04/03
Posts: 826
Loc: Michigan
I;d say yes and derateing by 310.15(B)2

#91702 - 01/31/05 12:56 PM Re: line and load, and derate
earlydean Offline

Registered: 12/22/03
Posts: 749
Loc: Griswold, CT, USA
Line and load is OK in the same raceway, but service and feeder, or service and branch circuit conductors cannot be in the same raceway.
De-rating is contained in the bottom section of Table 310.16 for ambient temperature, and in Table 310.15(B)(2)(a) for more than 3 current carrying conductors in a raceway or cable, or bundling of cables


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