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  1. #1
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    Sep 2008
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    Default wiring under existing floor

    In upgrading wiring in a 100 year old house, we came across a spot on the third floor where they had run wires up a second floor wall and then connected that wire with marrettes to other wiring which goes under a few more floorboards to a light switch and on up to a ceiling fixture. Would it pass Canadian code to put a junction box under the floorboard to join the wires? If not can we run wires along the same basic path as long as there are no connectors? The issue is that the rooms on the third floor do not line up with the rooms below and there is no easy way to run wiring up the walls to intersect with walls on the third floor and there is no attic above the third floor to run wiring. Jerry

  2. #2
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    Default Re: wiring under existing floor

    Yikes ... sounds a bit scarey.

    A junction box has to be accessable and have an appropriate cover fixed to the junction box. Unless you are going to leave an access in the floor it might be better to relocate it.

    The thing is while junction boxes are allowed for splicing together wires there is always a potential problem at a splice.

    If you can have the cable from the switch run directly from wherever the feed point is and make the splice there.

    The cable can run under the floor as long as you fasten it to say along the center of a floor joist .
    Last edited by canuk; 09-18-2008 at 06:54 PM.
    "" an ounce of perception -- a pound of obscure "
    - Rush

  3. #3
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    Default Re: wiring under existing floor

    Just a note:

    Those crazy canuks call wirenuts "marrettes"..........

    Why? I have no idea.

    ....... Just having some fun with our good neighbors to the Nort.

    .......... Snowing again up there?

  4. #4
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    Default Re: wiring under existing floor

    It's probably a Frenglish thing.
    Jack
    Be sure you live your life, because you are a long time dead.-Scottish Proverb

  5. #5
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    Default Re: wiring under existing floor

    In the event its needed, a listed, floor-rated junction box should be acceptable, albeit bulky, expensive, and a conspicuous plate.

  6. #6
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    Default Re: wiring under existing floor

    Yep ... also called marr connectors or wire nuts.
    I think "marrette" is a french thing meaning connector?

    Nope ... not snowing yet .... at least around here .... nice balmy 74 today.
    "" an ounce of perception -- a pound of obscure "
    - Rush

  7. #7
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    Default Re: wiring under existing floor

    "Scru-it"

    LOL!

    http://en.wikipedia.org/wiki/Wire_nut

    Yup I'm sure the CEC is no different from the NEC in that all splices need to be in an approved junction box of some type and accessible without removing building structure.

  8. #8
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    Default Re: wiring under existing floor

    Quote Originally Posted by college student View Post
    In the event its needed, a listed, floor-rated junction box should be acceptable, albeit bulky, expensive, and a conspicuous plate.
    Yep ... for those reasons and getting rid of a junction .... better to redo the cable in my opinion.
    "" an ounce of perception -- a pound of obscure "
    - Rush

  9. #9
    Join Date
    Nov 2007
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    Default Re: wiring under existing floor

    Quote Originally Posted by canuk View Post

    Nope ... not snowing yet .... at least around here .... nice balmy 74 today.

    you have to rubbed in don't ya......

    you s----cks....

    damn..it is hot and 92 degrees today....
    "Life does not go by the book, we learn as we go along".

    You only need two tools in life - WD-40 and Duct Tape.
    If it doesn't move and should, use WD-40.
    If it shouldn't move and does, use the Duct Tape.


  10. #10
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    Default Re: wiring under existing floor

    Things are similar .... common sense as well.
    J-boxes need to be accessable and not hidden.
    "" an ounce of perception -- a pound of obscure "
    - Rush

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