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Thread: Tapping Riser

  1. #1
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    Tapping Riser

    Looking for a little help as I confused to the port quantity I would need. I’m tapping(2) sets to one. How does that work? If someone could give a little “idiotproof” walk thru of this. 2 existing phases get tapped to one? Thanks

    https://commerce.ilsco.com/e2wShoppi...183:3100012208



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  2. #2
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    Sounds tricky, but maybe not. If you are physically cutting a new tap box into an existing riser, that may be a challenge in itself. You may need to support the vertical conductors that are below the box. I would recommend a mounted connection block with a cover, not the floating insulated variety your link took me to.

    https://commerce.ilsco.com/e2wShoppi...183:3100012318

    In order to accomplish this without replacing any of the conductors, it's going to be a challenge but not necessarily impossible. You must complete the parallel wiring on the existing sets of conductors, then tap each parallel connected set.

  3. #3
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    You'll need a 3 port Polaris or some other type of connector for three conductors. The #3 EGC with the tap conductors is likely too small.
    Rob

    Moderator

    All responses based on the 2014 NEC unless otherwise noted

  4. #4
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    Quote Originally Posted by Jim1959 View Post
    Sounds tricky, but maybe not. If you are physically cutting a new tap box into an existing riser, that may be a challenge in itself. You may need to support the vertical conductors that are below the box. I would recommend a mounted connection block with a cover, not the floating insulated variety your link took me to.

    https://commerce.ilsco.com/e2wShoppi...183:3100012318

    In order to accomplish this without replacing any of the conductors, it's going to be a challenge but not necessarily impossible. You must complete the parallel wiring on the existing sets of conductors, then tap each parallel connected set.
    Agreed. So in my mind this is what happens.
    1. Install new 3-1/2" pipe and wire to point near new splice box and new panel
    2. Shutdown power to existing feeders we are tapping.
    3. Cut existing riser conduits/feeders, support feeders.
    4. Cut in new splice box.
    5. Finish new 3-1/2" conduit install and splice/terminate.

    Sound right? Thanks.

  5. #5
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    Quote Originally Posted by infinity View Post
    You'll need a 3 port Polaris or some other type of connector for three conductors. The #3 EGC with the tap conductors is likely too small.
    If the existing is a parallel run, then a 5 port connector would be needed, right?
    2 in, 2 out and the tap.

  6. #6
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    Quote Originally Posted by mstrlucky74 View Post
    Agreed. So in my mind this is what happens.
    1. Install new 3-1/2" pipe and wire to point near new splice box and new panel
    2. Shutdown power to existing feeders we are tapping.
    3. Cut existing riser conduits/feeders, support feeders.
    4. Cut in new splice box.
    5. Finish new 3-1/2" conduit install and splice/terminate.

    Sound right? Thanks.
    I think you are on the right track, I would allow for some adversity.............

  7. #7
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    Quote Originally Posted by Jim1959 View Post
    If the existing is a parallel run, then a 5 port connector would be needed, right?
    2 in, 2 out and the tap.
    Oops, yes you're correct, a 5 port is needed since the riser is continuing.
    Rob

    Moderator

    All responses based on the 2014 NEC unless otherwise noted

  8. #8
    Join Date
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    Quote Originally Posted by infinity View Post
    You'll need a 3 port Polaris or some other type of connector for three conductors. The #3 EGC with the tap conductors is likely too small.
    Quote Originally Posted by Jim1959 View Post
    If the existing is a parallel run, then a 5 port connector would be needed, right?
    2 in, 2 out and the tap.
    Quote Originally Posted by infinity View Post
    Oops, yes you're correct, a 5 port is needed since the riser is continuing.
    Need to know what's in EMDP-G5-42-MSB-2S1.

    One of these might work better: https://commerce.ilsco.com/e2wShoppi...237:3100012714
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