ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
twh 10
jraef 4
Recent Posts
Dryer, Range grounding from "Main" panel
by sparkync. 05/25/17 05:49 PM
210.70 / Wall Switch / When adopted?
by gfretwell. 05/24/17 09:18 PM
Any UL 508 experts out there?
by sparkyinak. 05/23/17 11:04 PM
Heat pump conundrum
by sparkyinak. 05/21/17 08:49 PM
Interesting week
by HotLine1. 05/20/17 11:57 AM
New in the Gallery:
SE cable question
Popular Topics(Views)
236,775 Are you busy
171,793 Re: Forum
164,722 Need opinion
Who's Online Now
0 registered members (), 60 guests, and 9 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#188580 - 08/19/09 02:00 AM box fill  
twh  Offline
Member
Joined: Mar 2004
Posts: 915
Regina, Sask.
A box contains:
a) wires of different sizes (for example #12 which requires 28.7 ml and #8, which requires 45.1 ml), and
b) a couple pairs of wire connectors, and
c) a flush mounted device of less than 2.54 cm,.

The #12 wires are connected to the #8 wires and the device is connected to a circuit with tails of #14 wire, which require 24.6 ml each, but aren't counted because they don't leave the box.

When I deduct the number of wire allowed in the box for wire connectors, can I reduce the number of #12 wires allowed? If the code doesn't specify, it must be my choice.

Can I deduct the #14 wire from the allowable fill, because the device is connected by that size of wire?


Tools for Electricians:

#188661 - 08/23/09 10:35 AM Re: box fill [Re: twh]  
Eddy Current  Offline
Member
Joined: Sep 2006
Posts: 111
Ontario,Canada
Only makes sense that the biggest wire be deducted. You have to use a bigger wire nut on bigger wire which takes up more space in the box.



#188669 - 08/23/09 10:47 PM Re: box fill [Re: Eddy Current]  
twh  Offline
Member
Joined: Mar 2004
Posts: 915
Regina, Sask.



Member Spotlight
Attic Rat
Attic Rat
Bergen Co.,N.J. USA
Posts: 524
Joined: December 2003
Show All Member Profiles 
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.009s Queries: 15 (0.002s) Memory: 0.7514 MB (Peak: 0.8770 MB) Zlib enabled. Server Time: 2017-05-25 23:49:14 UTC