ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat Box
Recent Posts
New tool
by gfretwell - 10/22/20 12:08 PM
Where is Everyone?
by Bill Addiss - 10/17/20 07:04 PM
Beyond Belief
by gfretwell - 09/27/20 12:03 AM
New in the Gallery:
Facebook follies, bad wiring
FPE in Germany pt.2
Who's Online Now
0 registered members (), 18 guests, and 18 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
300-4-d #76436 02/06/01 10:07 PM
Joined: Oct 2000
Posts: 5,389
S
sparky Offline OP
Member
300-4-d basically tells me to maintain that 1 1/4" from a framing member's edge. Well this gets fairly hard to do when interior walls are 2"x4", or really 1 1/2" x 3 1/2" , particularly in the area of wire entry into the switch box, which , volume needed is usually the deeper variety.

Any quick fixes out there?

2017 / 2014 NEC & Related Books and Study Guides
Re: 300-4-d #76437 02/07/01 12:35 AM
Joined: Oct 2000
Posts: 3,961
Bill Addiss Offline
Member
Sparky,

1 1/4 from each edge on a 2 x 4 gives you 1 inch to play with down the Middle. You are right about where it enters the box being close to the edge. Some boxes may have a center ko on top that would help maintain the clearances from edge(s) of framing members. I have never heard of this being an issue though, has anyone else?

Bill


Bill
Re: 300-4-d #76438 02/07/01 09:45 PM
Joined: Jan 2001
Posts: 29
S
sam Offline
Member
guys when in doubt i always put a plate on the board to protect from nails. better safe than sorry. a nail or screw should not be install around edge of box to penetrate the
wire. but that is a good point never thought about it can't idiot proof every thing

Re: 300-4-d #76439 02/07/01 10:07 PM
Joined: Oct 2000
Posts: 3,961
Bill Addiss Offline
Member
Sam,

I think Sparky is talking about the deep variety of boxes which would have the cable entry just about up against the back of the wall (w/2x4) and subject to penetration from the other side of the wall where the box can't be seen.

I've wondered about that too, but I guess it is not an issue. I haver never heard anyone else discuss it.

Bill


Bill
Re: 300-4-d #76440 02/08/01 08:21 AM
Joined: Oct 2000
Posts: 5,389
S
sparky Offline OP
Member
Sam, i use a lot of nail plates also, it's cheap insurance. [Linked Image]
I had recently roughed out a place, all 2X4's and started doing just that as a final touch.
I use the deeper variety of boxes for fill, so many are almost as deep as the 2x4.
So looking around, this would mean every receptacle and switch , which is a lot of nail plates.
One would think it's a non-issue, in that the device box is viewable from one wall side for those who renovate, hang pictures, etc.
Yet it is still a code i'd like to address in an economical manner.
So to the BB"s i go, and ask... [Linked Image]

Back when he was around, Bruce Lee was asked what style he was, his reply was " I am all styles and none" .
He had studied all, and took the best of what he found.

So, in that same vien, i ask... [Linked Image]

Re: 300-4-d #76441 02/08/01 10:16 PM
Joined: Jan 2001
Posts: 29
S
sam Offline
Member
the day a person stops learning is when (or should be ) he passes on from this world.I really enjoy this web site!


Featured:

2020 National Electrical Code
2020 National Electrical
Code (NEC)

* * * * * * *

2020 Master Electrician Exam Preparation Combos
2020 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
watersparkfalls
watersparkfalls
Washington...Not DC
Posts: 236
Joined: March 2005
Show All Member Profiles 
Top Posters(30 Days)
BigB 3
Popular Topics(Views)
270,742 Are you busy
204,967 Re: Forum
193,087 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.3