Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Electrical

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 02-28-2011, 09:30 AM   #1
walt1122
 
Join Date: Aug 2007
Posts: 201
Share |
Default

Elec box capacity/3-way switch questions


Hi All, Two questions in one. I have as part of 3 way switch configuration a round 4" box on the wall for my lights, regular sconces, I'm scratching my head cause:
1. the box says it should have only a max of 8 # 12 wires and this one has three 12/2 connected in the box feeding two bulbs in the light fixture. So isn't this to many for this size box?

2. think I figured this one out. didn't have my second cup of coffee! So just the box capacity question needs answering. Do i count the grounds??


thanks

Walt


Last edited by walt1122; 02-28-2011 at 09:46 AM.
walt1122 is offline   Reply With Quote
Old 02-28-2011, 09:54 AM   #2
Member
 
Join Date: Nov 2007
Location: Nashua, NH, USA
Posts: 6,934
Default

Elec box capacity/3-way switch questions


(U.S. rules)
All the ground wires together count as one point.
All the cable clamps or fingers, if any protrude into the box, count as one point.
The switch itself counts two points.
Pigtails (short wires wholly within the box) and wire nuts count zero points
One point is 2-1/4 cubic inches for 12 gauge wires.
A capacity of eight #12 wires means at least 18 c.i.

__________________
Stop wasting time re-adjusting the pattern. Have several lawn sprinklers, one for each pattern.

Last edited by AllanJ; 02-28-2011 at 09:59 AM.
AllanJ is offline   Reply With Quote
Old 02-28-2011, 11:06 AM   #3
walt1122
 
Join Date: Aug 2007
Posts: 201
Default

Elec box capacity/3-way switch questions


Thanks AllanJ

Walt
walt1122 is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
fan/light switch buzzing mjlocat Electrical 4 05-23-2010 02:44 PM
1 pole + 3 way switch momof2labs Electrical 1 05-22-2010 10:37 AM
Just for fun Andy in ATL Electrical 56 10-20-2009 09:33 AM
Bedrooms have no ceiling light, light switch controls one electrical outlet? notenoughtime Electrical 16 05-25-2009 12:09 AM
old wire, backfed switch question Jack A. Trades Electrical 6 07-03-2008 11:05 AM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.