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Terminal Block

  1. Dec 16, 2009 #1

    MacLaddy

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    I was wondering if somebody could assist me in locating a fairly small, one inch thick or less, terminal block. I have seen some online, but I do not know which companies to trust, and which products would be the safest.

    The application is for undercabinet wiring. I have a single 110/120 volt, 12 gauge wire coming into the bottom of my kitchen cabinets. I would like to hardwire four 20 watt, 110v Xenon lights into this. I am assuming parallel wiring is the correct way, but I do not want to stick five wires together into a wire nut.

    Any advice on where I can locate a flat (so as to be discreet under the cabinet) terminal would be appreciated. Or if anyone has a better method for achieving this I would be very greatly appreciative.

    Thank you,

    Mac.
     
  2. jcsd
  3. Dec 17, 2009 #2

    berkeman

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    Whatever way you figure out, it needs to be NEC and UL approvable. I haven't seen terminal strips used for AC Mains distribution. I have seen daisy-chained wire nuts used. Have you consulted the NEC Manual about this? You might consider asking your local city building inspectors for their thoughts -- after all, they are the ones who will issue you the permit and do the inspection, right?
     
  4. Dec 17, 2009 #3

    MacLaddy

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    Well, um, this is for my condo. I don't believe I would open the door to an inspector :devil:

    Also, I don't even know what an NEC manual is... But I am starting to feel highly unqualified for simple wiring.
     
  5. Dec 17, 2009 #4

    MacLaddy

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    What do you mean by "daisy-chained wire nuts?" Does that mean that perhaps two are wired together, with a runner wire going to a second nut with the other two in it?
     
  6. Dec 17, 2009 #5

    berkeman

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    Yes, if you don't know what the NEC is, you might want to consult an electrician to help with the project. And in most cities, you need a permit for electical upgrade projects, unless they are small and pretty simple.

    You might look into insulation displacement connectors -- that might be a way to tap off of a power run to stub to your lights. Is there a Home Depot or similar large home improvement store near you? You could talk over your project with some person in the electrical department. There will also be some do-it-yourself type books there, with a good one on home wiring that will give you the important parts of the NEC.
     
  7. Dec 17, 2009 #6

    MacLaddy

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    *National Electric Code* I guess I should try to Google before I speak...

    It's actually a fairly simple wiring job. I had one light on a single switch connected to a 15 amp breaker. I just changed the single gang box to a double gang, added a dimmer switch, and then ran the new 12 gauge romex wire into the sides of the cabinets. (via alot of attic crawling and fishing wire through the wall.)

    I am wiring in 16 - 20 watt Xenon lights into this system, but since that should only pull around 3 amps, I figured I would be safe. The problem is mainly that I don't want the wire to be exposed under the cabinet, or have many wires all hooking into the same nut. I don't know if it's code or not, but I don't like the idea of it so I am trying to find an alternative.

    I found this online,

    http://www.radioshack.com/product/index.jsp?productId=2103231

    and I think that if I could hide that within a single gang junction box under the cabinet that would work...

    I do have a Home Depot nearby, and I will take your advice and go talk to them tonight. I don't typically get real great advice there, but it doesn't hurt to try.

    Thank you for your input.
     
  8. Dec 17, 2009 #7

    dlgoff

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    You should be okay if you pick up a junction box like this:
    http://images.grainger.com/B297_46/images/products/4FUA1.JPG [Broken]
    and punch out five 'knock-outs" for your power wire and four lamp wires and install five "romex connectors" like this,
    http://base1.googlehosted.com/base_media?q=http://www.capitolsupply.com/ImageServer.ashx%3Ft%3Dproduct%26h%3D200%26w%3D200%26imageid%3DCS8532077&size=20&dhm=1e9cdca8&hl=en [Broken].[/URL]
    The incoming power wires (hot, neutral, and ground) can be "wire nutted" to the four lamp wires using these:
    http://www.outdoorpros.com/images/prod/5/Dorman-85571-rw-49742-59622.jpg [Broken].[/URL]
    You will want to chose the correct wire nut size to accept your power and four lamp power wires.
     
    Last edited by a moderator: May 4, 2017
  9. Dec 17, 2009 #8
    Hello Mac,

    Some quick thoughts:

    Most house wiring is wire nuts, outlets, and power switches. Of these, the cleanest jumper would be the outlet - its also handy for just plugging your extra appliance into.

    The intent of the junction box is to prevent shocks, contain over-heated junctions, provide wire relief, and secure the electrical components. Usually, the box serves its purpose if you mount it securely, route the ground connection to it (if it's not plastic), fasten the outlet in place, and fasten the cover in place.

    Of course, you still have to get the wiring correct. There's a hot wire (black) that goes on one side of the outlet, a neutral wire (white) that goes on the other, and a ground wire (bare copper) that goes on the corner. For other outlets, you daisy chain from there. Afterwards, you can add outlets to your appliance leads and plug 'em in.

    A couple of more tidbits:

    1. NEVER solder your connections. (solder cold flows and I've seen several fires due to it)
    2. Never use crimp terminals or butt splices (most of these are not approved for the application)
    3. Try to use outlets with screw terminals rather than the self-locking type. The latter is easy to use, but screw terminals have a long, proven history of success.

    Well, with all of that, it's also good if you get a wiring book at your local hardware store. It will reads like a third grade reader or modern control theory, depending on which half of your brain rules the roost :)

    Best of luck, don't forget to turn off the breakers and have a friend handy,

    - Mike
     
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