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Thread: Marking out panel for conduit

  1. #1
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    Marking out panel for conduit

    Witch is more accurate way to mark out conduit entering top of back box.

    I usually first take a piece of deep strut witch the conduit will be supported on

    befor entering panel .

    and make my back line with the deep strut , then I'll take a connector put it up to the back line

    and the get my halfway mark of the connector .


    is their a chart that gives you the half way mark of the diff sizes of conduit ?

    is this the method you guys use or do you use the conduit its self ?

  2. #2
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    Sharpie, strut or straight edge or ✏️

  3. #3
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    http://www.southwiretools.com/tools/m/tools/MM01

    Mean something like this?

    Sent from my SM-N900P using Tapatalk

  4. #4
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    Quote Originally Posted by KnightPower View Post
    http://www.southwiretools.com/tools/m/tools/MM01

    Mean something like this?

    Sent from my SM-N900P using Tapatalk
    I just YouTube it that tool looks like it would save a lot of time

    what you guys think .

    but until I get it is the connector halfpoint or the conduit of point better to use

  5. #5
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    If you use strut to mark the back edge of your KO's with 2" and smaller EMT the tubing will be crooked because the EMT diameter is smaller than the actual KO. You would need to adjust the line about 1/16"-1/8" of an inch if you want the vertical conduit to enter plumb. I usually measure the actual cutter from the KO set and use that dimension to layout the KO's and adjust for the smaller EMT.
    Last edited by infinity; 03-18-17 at 06:31 PM. Reason: Fixed measurement error
    Rob

    Moderator

    All responses based on the 2014 NEC unless otherwise noted

  6. #6
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    As Rob says depends on what kind of raceway you are using. EMT is smaller then the KO. RMC/IMC is approximately same size as the KO.

  7. #7
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    Quote Originally Posted by kwired View Post
    As Rob says depends on what kind of raceway you are using. EMT is smaller then the KO. RMC/IMC is approximately same size as the KO.

    So for emt using the center point on the cutter of the knock out kit is most accurate .

  8. #8
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    Quote Originally Posted by liquidtite View Post
    So for emt using the center point on the cutter of the knock out kit is most accurate .
    Yes..... that's what I do.


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  9. #9
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    Sounds good

  10. #10
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    Quote Originally Posted by liquidtite View Post
    So for emt using the center point on the cutter of the knock out kit is most accurate .
    Depends if you want to lay a piece of strut across the top of the panel and make a line for the back of all of the KO's it's not going to work correctly if you are using 2" of smaller EMT. If you make the correction to that straight line then you do not need to use the center of the KO.
    Rob

    Moderator

    All responses based on the 2014 NEC unless otherwise noted

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