running new circuit

Reply

  #1  
Old 06-24-13, 01:40 PM
Member
Thread Starter
Join Date: Nov 2012
Location: usa
Posts: 364
running new circuit

Had a question on running 12/2 romex wire .if you have to run the wire from main panel inside ,bottom of panel,through already there schedule 40 outside pipe that goes back under home do you have to change the wire type since Romex is not for exterior ? There is no way to get to box diectly from below,concrete' and old 10 gauge/schedule 40/ is no longer needed and will make it easier to run new circuits as wire is pulled .
Also,what size schedule 40 (small area where concrete is)for 4 circuits?
Any info is appreciated.
 
Sponsored Links
  #2  
Old 06-24-13, 01:45 PM
chandler's Avatar
Banned. Rule And/Or Policy Violation
Join Date: Dec 2005
Location: USA
Posts: 39,968
Running romex in conduit is not advisable. It is difficult to run and if it goes underground it is not acceptable. SO, if the conduit is empty, run 12 gauge THWN . I am not certain where this conduit comes out at, so you'll have to determine that and properly junction the wires from there.
 
  #3  
Old 06-24-13, 04:27 PM
Nashkat1's Avatar
Member
Join Date: Mar 2012
Location: USA
Posts: 8,470
Also,what size schedule 40 (small area where concrete is)for 4 circuits?
To pull that many circuits in one pipe you have to derate the ampacity of the conductors and pull #10 AWG THHN/THWN. 3/4" pipe.

Schedule 40 PVC is not very sturdy and should not be used where it is subject to physical damage. Schedule 80 PVC or any of the metal conduits should be used instead.
 
  #4  
Old 06-24-13, 04:49 PM
Member
Thread Starter
Join Date: Nov 2012
Location: usa
Posts: 364
It doesn't go under ground but underdeck for a few ft t.and the large wire will be in pulling the smaller wires then it will be discarded . So it will just be the 4 circuits in it.
 
  #5  
Old 06-24-13, 04:56 PM
Nashkat1's Avatar
Member
Join Date: Mar 2012
Location: USA
Posts: 8,470
It doesn't go under ground but under deck a few ft then ends in crawlspace
If it is always protected from physical damage then Schedule 40 PVC will work fine. #10 conductors for 20A circuits, THHN/THWN in 3/4" pipe.
 
  #6  
Old 06-24-13, 05:36 PM
Member
Thread Starter
Join Date: Nov 2012
Location: usa
Posts: 364
Thanks for the info,can I run that kind u mentioned under home then junction it to romex? I have a lot of the 12/2 romex.may have to pick a seperate route inside but concrete blocks a lot of access below and beside panel .
 
  #7  
Old 06-24-13, 06:29 PM
Nashkat1's Avatar
Member
Join Date: Mar 2012
Location: USA
Posts: 8,470
Thanks for the info,can I run that kind u mentioned under home then junction it to romex?
Yes, and the #12 is fine for 20A circuits. The derating came up because you said you wanted to run four circuits in one raceway (pipe). IOW, you only need the #10 inside the conduit.

You will need a good-sized junction box for that many wires. I would use a deep 11-b (4-11/16" square) box.
 
  #8  
Old 06-25-13, 09:49 PM
Member
Thread Starter
Join Date: Nov 2012
Location: usa
Posts: 364
Thanks again for the info.I was able to run them inside instead,a few areas were behind baseboard /drywall.do I need to use protective plates or nail guars over the small area behind baseboard drywall before replacing baseboard?
Majority of run is under home.
 
  #9  
Old 06-26-13, 03:57 AM
pcboss's Avatar
Forum Topic Moderator
Join Date: Jul 2002
Location: Maryland
Posts: 14,357
If the cables are not 1 1/4" back from the face of the stud you need nail plates.
 
  #10  
Old 06-28-13, 05:47 PM
Member
Thread Starter
Join Date: Nov 2012
Location: usa
Posts: 364
Just had one more question ....
 
  #11  
Old 06-28-13, 05:51 PM
Member
Thread Starter
Join Date: Nov 2012
Location: usa
Posts: 364
As of recently does the dishwasher dedicated circuit have to be GFCI protected and washroom arc fault protected ?
Or is that a proposal on 2014 nec?
 
  #12  
Old 06-28-13, 08:35 PM
Nashkat1's Avatar
Member
Join Date: Mar 2012
Location: USA
Posts: 8,470
Not that I know of. Might be proposed for the 2014 cycle.
 
Reply

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


Thread Tools
Search this Thread
Display Modes
'