Return to the Electrical Wiring Forum | Post a Follow-Up

 o
14-2-2 versus 14-3

Posted by tryinbrian (My Page) on
Mon, Dec 4, 06 at 8:53

I was just went shopping at my local big box for some cable to run some three-way switches. When I was able to compose myself from the sticker shock I received on ALL the prices, I noticed that they had some "14-2-2" cable for just about the same price as 14-3 cable. My question is this: can this 14-2-2 be used the same as 14-3? It certainly looked the same, except for the color of the insulation, but I couldn't find a box to explain what it is used for.

My thinking was, if I'm going to get a 250' roll of something, might as well get the most versatile material for the price.


Follow-Up Postings:

 o
RE: 14-2-2 versus 14-3

Southwire has some information on the two conductor cable.

You don't need it for a 3-way switch circuit.

Mike

Here is a link that might be useful: Southwire 14-2-2


 o
RE: 14-2-2 versus 14-3

14-2-2 is useful for several things. It is primarily marketed to take the place of 14-3 used in multiwire circuits that feed bedrooms. Since these require AFCIs the extra neutral wire allows using single pole AFCIs rather than the double pole type.

The cable is used for 3 way circuits where running a neutral and pass through power with the travelers is necessary, 2 speed swamp coolers and for light-heat-fan units in bathrooms.

The NEC doesn't allow running 2 separate cables any more to devices requiring multiple wires so the -2-2 cables in both sizes are used where a couple of -2 cables might have been used before. (above)

Using -2-2 cable in place of -3 is OK as long as you watch the box fill. Many single gang boxes are full with 2 14-3 cables and a device.

You're going to have to be the judge of whether you can justify the cost difference for something you will see limited use for. I do a lot of residential work and wind up using less than 2 rolls a year.

UNK


 o
RE: 14-2-2 versus 14-3

Thanks for the responses. I know I don't need the 14-2-2, but since it's the same price as 14-3, I figure it's better to invest in the roll of wire that's going to be more versatile for other things. Box fill is a consideration that I hadn't thought of, so I'll make sure I have a large enough box for the extra (unused)conductor.

It's probably priced lower cause it's new and they're trying to get people to try it. Obviously, it has more $copper$ in it than the 14-3.


 o
RE: 14-2-2 versus 14-3

Check to see that it is 250 feet. One day I was in home depot and was surprised to see a pallet of 12/2 for $62.00, then the sales clerk pointed out it was only 200 feet. The dirty dogs changed the length but the package looked the same.


 o
RE: 14-2-2 versus 14-3/

However if you take pride in your work and want it to look professional, buy the right kind of wire for the job. If you only need a little, buy it by the foot.


 o
RE: 14-2-2 versus 14-3

what is the best application for a 14-2b and a 14-3


 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!


Return to the Electrical Wiring Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.


Learn more about in-text links on this page here