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 02-06-2009, 06:48 PM   #1
Member
 
Join Date: May 2008
Posts: 78
Share |
Default

Basic cable running question


I am running the cables through my unfinished basement wall and I have two simple questions...

1. The book I have says that the cable must be stapled within 8 inches of the box. Is it ok if I do it closer than that, say 4 inches? Or should I shoot for 8?

2. The book also says to run the cables 20 inches above the floor. Is this a code or just general practice? Is there a range, for example 20 inches +/- 6 inches?

Thanks

epeterson777 is offline   Reply With Quote
Old 02-06-2009, 06:57 PM   #2
Electrical Contractor
 
wirenut1110's Avatar
 
Join Date: Apr 2008
Location: Chester, VA.
Posts: 1,046
Send a message via AIM to wirenut1110
Default

Basic cable running question


Actually it's within 12" of the box, etc. So as long as you got that ,you're good.
Don't know about the other, unless it's a moisture thing. I'm usually higher than that so I don't have to bend to run the wire.

wirenut1110 is offline   Reply With Quote
Old 02-06-2009, 06:59 PM   #3
Licensed Pro
 
Join Date: Mar 2007
Location: SC
Posts: 1,535
Default

Basic cable running question


It's 8 inches for single gang plastic boxes.
__________________
"Life is hard. Life is harder when you're stupid." John Wayne
HouseHelper is offline   Reply With Quote
Old 02-06-2009, 07:08 PM   #4
Electrical Contractor
 
wirenut1110's Avatar
 
Join Date: Apr 2008
Location: Chester, VA.
Posts: 1,046
Send a message via AIM to wirenut1110
Default

Basic cable running question


Is that new? 2008?
wirenut1110 is offline   Reply With Quote
Old 02-06-2009, 08:42 PM   #5
Member
 
Join Date: Jan 2009
Location: South of Boston, MA
Posts: 17,248
Default

Basic cable running question


Quote:
Originally Posted by epeterson777 View Post
I am running the cables through my unfinished basement wall and I have two simple questions...

2. The book also says to run the cables 20 inches above the floor. Is this a code or just general practice? Is there a range, for example 20 inches +/- 6 inches?

Thanks
"The Book" ? What book ?

I use my hammer, put it in the stud bay, put outlet box on top, nail in place. For old construction I match what's in the room. In the basement mine will be approx 4' off the floor in case of a flood
Basement will be unfinished, so I'd rather have them up off the floor
Scuba_Dave is offline   Reply With Quote
Old 02-06-2009, 09:00 PM   #6
remodeling pro
 
Join Date: Sep 2006
Posts: 1,399
Default

Basic cable running question


Quote:
Originally Posted by wirenut1110 View Post
Actually it's within 12" of the box, etc. So as long as you got that ,you're good.
Don't know about the other, unless it's a moisture thing. I'm usually higher than that so I don't have to bend to run the wire.
I'm not a licensed electrician, but 8" has always been my understanding.

As for the 20" horizontal run, it has nothing to do with any code to my knowledge, but rather an efficient use of wire. Since most base outlets are set around 16" above the floor, it makes for short, economical drops into the boxes. The hammer handle as a gauge method mentioned is common in the trade, and puts the boxes in this range, provided you don't have an electrician who uses a 28oz Eastwing .
troubleseeker is offline   Reply With Quote
Old 02-06-2009, 09:29 PM   #7
Member
 
Join Date: Jan 2009
Location: South of Boston, MA
Posts: 17,248
Default

Basic cable running question


334.30 Within 12" of box
Scuba_Dave is offline   Reply With Quote
Old 02-06-2009, 09:41 PM   #8
Member
 
Join Date: May 2008
Posts: 78
Default

Basic cable running question


The book I have been using is the Black and Decker: The Complete Guide to Home Wiring.
epeterson777 is offline   Reply With Quote
Old 02-06-2009, 09:55 PM   #9
Member
 
Join Date: Jan 2009
Location: South of Boston, MA
Posts: 17,248
Default

Basic cable running question


Quote:
Originally Posted by epeterson777 View Post
The book I have been using is the Black and Decker: The Complete Guide to Home Wiring.
Many of these types of books have incorrect information in them
Some have been recalled
Always verify information 1st before proceeding
Scuba_Dave is offline   Reply With Quote
Old 02-06-2009, 09:56 PM   #10
Member
 
Join Date: Oct 2007
Posts: 2,294
Default

Basic cable running question


1. If you are measuring the distance from the box to staple your cables, you are overthinking it.

Boxes with clamps = 12", boxes without = 8" (I think)

Don't staple them at 4". Let the cable come smoothly, straight up from the box to the stud.

2. Running cables below 20" would be a pain in the back to drill and install but you can do it.
220/221 is offline   Reply With Quote
Old 02-06-2009, 10:04 PM   #11
Member
 
Join Date: Jan 2009
Location: South of Boston, MA
Posts: 17,248
Default

Basic cable running question


Quote:
Originally Posted by 220/221 View Post
1. If you are measuring the distance from the box to staple your cables, you are overthinking it.

Boxes with clamps = 12", boxes without = 8" (I think)

Don't staple them at 4". Let the cable come smoothly, straight up from the box to the stud.

2. Running cables below 20" would be a pain in the back to drill and install but you can do it.
Quote:
Originally Posted by Scuba_Dave View Post
334.30 Within 12" of box
And the code for the measurement you are quoting?

Maybe this differs by the cable, the section of NEC I quoted is for NM

320.30 (B) - same for AC cable type

Last edited by Scuba_Dave; 02-06-2009 at 10:08 PM.
Scuba_Dave is offline   Reply With Quote
Old 02-06-2009, 10:11 PM   #12
Electrician
 
Join Date: Aug 2007
Location: Connecticut, Litchfield
Posts: 2,015
Default

Basic cable running question


314.17 (C)Nonmetallic Boxes and Conduit Bodies
Exception: Where nonmetallic-sheathed cable or multiconductor Type UF cable is used
with single gang boxes not larger than a nominal size 57 mm 100 mm (2 1/ 4 in. 4 in.)
mounted in walls or ceilings, and where the cable is fastened within 200 mm (8 in.) of the
box measured along the sheath and where the sheath extends through a cable knockout
not less than 6 mm ( 1/ 4 in.), securing the cable to the box shall not be required. Multiple
cable entries shall be permitted in a single cable knockout opening.




Last edited by chris75; 02-06-2009 at 10:14 PM.
chris75 is offline   Reply With Quote
Old 02-06-2009, 10:18 PM   #13
Member
 
Join Date: Jan 2009
Location: South of Boston, MA
Posts: 17,248
Default

Basic cable running question


Thanks, I have heard 8", 12" & wanted to know the specifics
Scuba_Dave is offline   Reply With Quote
Old 02-06-2009, 10:24 PM   #14
Electrician
 
Join Date: Aug 2007
Location: Connecticut, Litchfield
Posts: 2,015
Default

Basic cable running question


Quote:
Originally Posted by Scuba_Dave View Post
Thanks, I have heard 8", 12" & wanted to know the specifics
Your welcome.
chris75 is offline   Reply With Quote
Old 02-07-2009, 06:33 AM   #15
Member
 
Join Date: Dec 2008
Location: South Western Ontario
Posts: 955
Default

Basic cable running question


All we need now is a multi trade code for hammer length on new construction sites and everything will finally come out level

Chemist1961 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
Running 6/3 cable-do I need conduit? Kips Electrical 6 01-16-2009 11:36 AM
Basic wood cutting question sharding Carpentry 4 08-02-2008 04:56 PM
Nuetral from feeder cable to main panel question? TW Lucas Electrical 14 05-08-2008 11:33 AM
running ethernet through attic null_pointer_us Building & Construction 3 05-15-2006 05:08 PM
very basic drywall question Knyte260 Building & Construction 3 07-18-2005 03:09 PM




Top of Page | View New Posts

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