Results 1 to 10 of 10

Thread: Whip length?

  1. #1
    Join Date
    Aug 2017
    Location
    Alabama
    Posts
    9

    Whip length?

    What is the maximum distance allowed for a whip coming from something such as an A/C disconnect, junction box or something similar? 6 feet for A/C disconnect? Can anyone point out some NEC sections for this? thanks

  2. #2
    Join Date
    Jan 2007
    Posts
    2,739
    Quote Originally Posted by Lock Nut View Post
    What is the maximum distance allowed for a whip coming from something such as an A/C disconnect, junction box or something similar? 6 feet for A/C disconnect? Can anyone point out some NEC sections for this? thanks
    Several factors may play into that answer such as , what size it is, what its made of, what's inside of it, and , on top of all that what the job specs say.

    JAP>

  3. #3
    Join Date
    Feb 2003
    Location
    Fl
    Posts
    16,594
    Just about any length you want to make it however, if your using FMC and wanting to use the FMC and connectors as an EGC you are limited to 250.118(5) and 250.118(6) for liquidtight

    Roger
    Moderator

  4. #4
    Join Date
    Jul 2003
    Location
    New Jersey
    Posts
    23,414
    3/8" FMC is limited to 6'.
    Rob

    Moderator

    All responses based on the 2014 NEC unless otherwise noted

  5. #5
    Join Date
    Dec 2007
    Location
    NE Nebraska
    Posts
    32,910
    See 3XX.30 of the particular type of raceway being used, general rule for most flexible raceways is they must be supported within 12 inches of ends of raceway with additional supports at certain intervals depending on size or type. Some do have allowances for no supports other then the end fittings in certain situations.

    I see a lot of leeway given from what NEC actually says when it comes to whips to air conditioners or motors/appliances.

  6. #6
    Join Date
    Feb 2003
    Location
    Fl
    Posts
    16,594
    Quote Originally Posted by infinity View Post
    3/8" FMC is limited to 6'.
    That too.

    Roger
    Moderator

  7. #7
    Join Date
    Feb 2016
    Location
    Illinois
    Posts
    355
    Quote Originally Posted by kwired View Post
    I see a lot of leeway given from what NEC actually says when it comes to whips to air conditioners or motors/appliances.
    Yeah, can't say I've ever seen any support on an AC condenser unit whip of any length.

  8. #8
    Join Date
    Apr 2009
    Location
    Clarkesville, Georgia
    Posts
    1,993
    Quote Originally Posted by retirede View Post
    Yeah, can't say I've ever seen any support on an AC condenser unit whip of any length.
    sealtight bundled to lineset with wire ties?
    Dave Ruth
    Ready Electric

  9. #9
    Join Date
    Apr 2009
    Location
    Williamsburg, VA
    Posts
    4,154
    Quote Originally Posted by readydave8 View Post
    sealtight bundled to lineset with wire ties?
    Noooo, never!

    LFNMC might be strapped leaving the disco but it's not going to be strapped or supported on or near the unit. I'd rather it arc down and use the ground for support, or zip ties to the coolant lines, than see it pulled like a banjo string and rip the fittings or bend the sheet metal on the HVAC unit.

    There is a 6' rule on spa installs (disco to tub) in the 08 code but I believe it has been removed since.
    Electricians do it until it Hertz!

  10. #10
    Join Date
    Feb 2016
    Location
    Illinois
    Posts
    355
    Quote Originally Posted by readydave8 View Post
    sealtight bundled to lineset with wire ties?
    I went out and looked at mine....nothing. But it's possible this was done in some cases and I didn't notice.
    Here, the HVAC guys run their own electrical so I'm sure some are more compliant than others.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •