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Thread: Grounding bushings

  1. #1

    Grounding bushings

    Are grounding bushings required on flexible conduit connectors?

  2. #2
    Join Date
    Jul 2007
    Location
    Clark County, NV
    Posts
    182
    What voltage? Amperage? Length of conduit? Which type of connector; clamp? Installed in eccentric or concentric KOs?

  3. #3
    Join Date
    Jul 2003
    Location
    New Jersey
    Posts
    23,549
    Depends on the size and type of flexible conduit and whether of not it qualifies as an EGC in 250.118. For larger FMC they're not required because the FMC is not considered an EGC.
    Rob

    Moderator

    All responses based on the 2014 NEC unless otherwise noted

  4. #4
    Quote Originally Posted by MAC702 View Post
    What voltage? Amperage? Length of conduit? Which type of connector; clamp? Installed in eccentric or concentric KOs?
    480V, 600A, 24", 3" flexible conduit

  5. #5
    Quote Originally Posted by dmulhol925 View Post
    480V, 600A, 24", 3" flexible conduit
    Straight sealflex connector and non-concentric penertration

  6. #6
    Join Date
    Jul 2003
    Location
    New Jersey
    Posts
    23,549
    Quote Originally Posted by dmulhol925 View Post
    Straight sealflex connector and non-concentric penertration
    No required, since it's 3" a wire type EGC is required.
    Rob

    Moderator

    All responses based on the 2014 NEC unless otherwise noted

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