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Thread: OLSUN transformer Wire connection

  1. #1
    Join Date
    Nov 2017
    Location
    Saudi Arabia
    Posts
    1

    OLSUN transformer Wire connection

    I have a 5KV-480-208/120 dry type transformer manufactured by OLSUN -USA . The size of primary wires ( H1 , H2 , H3 ) and Secondary wires ( X0 , X1 , X2 , X3 ) is 14 AWG . The primary cable is 4C x 4 MM2 ( 12AWG ) and secondary cable is 4C x 35 MM2 ( 2AWG) . Both cables are XLPE/SWA/PVC . For terminations inside the transformer , Does NEC allow using wire nut or I can use terminal lugs with one hole with bolt and nuts with heat shrinkable tube , rubber tape and electrical tape . I could not find a manual on OSLUN website .
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  2. #2
    Join Date
    Feb 2003
    Location
    Fl
    Posts
    16,681
    Wire nuts are fine.

    Roger
    Moderator

  3. #3
    Join Date
    Jul 2003
    Location
    New Jersey
    Posts
    23,770
    I agree with Roger, I would use wire nuts also on those small conductors but you may have a problem if your using #2 AWG conductors..
    Rob

    Moderator

    All responses based on the 2014 NEC unless otherwise noted

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