Forums | Home Repair | Home Improvement | Painting | Interior Decorating | Remodeling | Landscaping


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 07-08-2011, 08:42 PM   #1
Newbie
 
Join Date: Jul 2011
Posts: 9
Share |
Default

Fishing Romex through walls


I am looking to replace ancient BX containing 14 gauge cloth insulated wire with some 12-2 Romex.

I am very confused about how I am supposed to secure the Romex behind a finished wall. The walls I will be fishing the Romex behind are either plaster and lath or sheetrock, depending on the room.

I have watched various videos and read many threads about getting Romex through walls and they all discuss the process and techniques of physically fishing it through the wall, but none of them mention securing it behind the wall at all. It doesn't seem right that you can install Romex by just hanging it behind a wall like this, or did I just miss the stuff that had the proper securing instructions?

The code for installing Romex seems so strict (ex: securing it with a staple 8 inches from a box, and then every 4.5 ft, use of nail plates, etc) compared to the various videos and articles I have seen.

I would be extremely appreciative if anyone could clear this up for me.
Tetranitrate is offline   Reply With Quote
Old 07-08-2011, 08:45 PM   #2
Licensed electrician
 
Join Date: Sep 2007
Location: Maryland
Posts: 7,042
Default

Fishing Romex through walls


Cables that are fished into finished areas do not require stapling like new construction would.
__________________
Answers based on the National Electrical Code. Local amendments may apply. Check with your local building officials.
Jim Port is offline   Reply With Quote
Old 07-08-2011, 08:55 PM   #3
Electrical Contractor
 
kbsparky's Avatar
 
Join Date: Sep 2008
Location: Delmarva
Posts: 3,352
Default

Fishing Romex through walls


Some areas required BX instead of romex due to the presence of vermin. Rats can't chew through armored cable like they can non-metallic sheathed cables.
__________________
-KB

Life is uncertain -- eat dessert first!!
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
kbsparky is offline   Reply With Quote
Old 07-08-2011, 09:26 PM   #4
Newbie
 
Join Date: Jul 2011
Posts: 9
Default

Fishing Romex through walls


Quote:
Cables that are fished into finished areas do not require stapling like new construction would.
Thanks Jim.

I was really hoping that would be the answer, as it makes the rewiring project seem so much easier now. Would this also apply to running the romex from the attic to the breaker box in the basement? If I find a hollow wall that is the entire height of the house would I be able to just drop it down to the basement like that? (I am in NYC and the city code allows NM for residential homes less than three stories, so I am okay there)

As someone with little hands on experience in this area - it just feels so arbitrary that for new installations they seem to have code rules for locking down romex tighter than Fort Knox, but if there is already a wall in place the code allows you to just fish some through and leave it dangling in the wall like a limp extension cord.

Also if I could bother you for one more bit of advice. How should the romex be secured on the run through the attic? The attic itself is an unfinished two ft. tall crawlspace that is only accessible with a removable ladder. The only reason someone would have for even entering the attic is to work on the electrical wiring. If I run the nm from the back of the house to the front it will be crossing perpendicularly over the 2x4 ceiling boards. Is it enough to just lay the romex on the top of the 2x4s and staple it every 3rd 2x4 or so?


Quote:
Some areas required BX instead of romex due to the presence of vermin. Rats can't chew through armored cable like they can non-metallic sheathed cables.
I am guessing that is required in more urban areas than where I am. I have seen no signs of rodents, and there are two cats that live in the house. I will look into the code though, to make sure there is nothing specific about bx for rodents in my area.
Tetranitrate is offline   Reply With Quote
Old 07-08-2011, 09:30 PM   #5
Licensed electrician
 
Join Date: Sep 2007
Location: Maryland
Posts: 7,042
Default

Fishing Romex through walls


Once you are able to reach the cable like in your attic you would be required to secure it. If your joist or trusses are 16" on center you could staple to every 3rd one, every other one if 24" on center.
__________________
Answers based on the National Electrical Code. Local amendments may apply. Check with your local building officials.
Jim Port is offline   Reply With Quote
Old 07-08-2011, 09:33 PM   #6
Newbie
 
Join Date: Jul 2011
Posts: 9
Default

Fishing Romex through walls


Awesome, thanks.

And if I find a hollow wall, I am allowed to just drop it down the 2 stories to the basement, and let it sit in the wall unsecured?
Tetranitrate is offline   Reply With Quote
Old 07-09-2011, 06:12 AM   #7
Lic Elect/Inspector/CPO
 
Join Date: Apr 2011
Location: NJ
Posts: 369
Default

Fishing Romex through walls


Yes, if you find a hollow wall space such as old balloon framing than the wires can be drooped from attic down to basement.
NJMarine is offline   Reply With Quote
Reply

Tags
code, finished, fishing, romex, wall


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
Looking for a step by step for framing basement walls/2x4's wrong direction/stairs??? xray328 Remodeling 27 06-19-2011 08:50 PM
Basement Walls - Which Paint?Drylok? HandyFrank Building & Construction 3 10-17-2010 12:07 PM
How to solve problem of moist basement walls moist Building & Construction 4 08-30-2010 05:18 PM
Before I close walls: hard wiring under cabinet lighting with Romex. jws3 Electrical 6 08-29-2009 12:24 PM
removing concrete parging from basement foundation walls. newzev Remodeling 1 07-24-2009 08:17 AM




Top of Page | View New Posts

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