Grounding a Jacuzzi Bathtub

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by scolby, Feb 12, 2014.

  1. scolby

    scolby New Member

    Messages:
    2
    Location:
    pa
    I have a Jacuzzi bathtub to install and it says it requires:
    separate GFCI, 15 AMP circuit
    AND it says "using a #8 solid copper wire, ground the pump motor to the house electrical panel, or approved local ground. A grounding lug is provided on the motor"

    does this mean that I need to install a ground wire from that grounding lug all the way back to the breaker box panel?
  2. cacher_chick

    cacher_chick Test, Don't Guess!

    Messages:
    3,249
    Location:
    Land of Cheese
    It is the installer's responsibility to install it in accordance with the manufacturer's instructions, so yes, that is what it means.
  3. scolby

    scolby New Member

    Messages:
    2
    Location:
    pa
    Thank you. Do we just run that wire exposed along side the romex going back to the box?
  4. DoofusOfTheDay

    DoofusOfTheDay New Member

    Messages:
    34
    Location:
    Atlanta GA metro area
    I just helped remove a jacuzzi bathtub and noticed the grounding wire from the motor to the cold water copper pipe supply for the tub. Would the cold water supply pipe be acceptable as an "approved local ground"? Wondering if the tub I helped remove was installed incorrectly or if cold water supply copper pipes are okay to use for ground.
  5. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,825
    Location:
    Cave Creek, Arizona
    quote; if cold water supply copper pipes are okay to use for ground.

    At one time it was legal, but not any more, because there is always the danger that someone will replace a section of it with plastic pipe, or isolate it with "dielectric" connectors.
  6. DoofusOfTheDay

    DoofusOfTheDay New Member

    Messages:
    34
    Location:
    Atlanta GA metro area
    Ah okay, that makes sense. A little bit older home, so maybe legal back then.
  7. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    22,139
    Location:
    New England
    The codes are written for those 'what if' situations, and over time, more of them get discovered and various fixes get applied (the codes are a living thing - they change). Way back when, there was no approved plastic piping, and it was considered a viable grounding point. Today, the pipes can be bonded to ground, but cannot be a viable ground by themselves.
  8. Vegas_sparky

    Vegas_sparky Eat kitty

    Messages:
    290
    Location:
    LV,NV/ Nowhere,UT
    Yes, that is fine.

    Just to add, the #8 bonding wire will not enter the jbox that will hold the tub receptacle. Typically the bare wire will simply come up through the subfloor, or out of the wall near the physical location of the motor.
    Last edited: Feb 13, 2014
  9. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,825
    Location:
    Cave Creek, Arizona
    quote; Just to add, the #8 bonding wire will not enter the jbox that will hold the tub receptacle.

    IT would not be much good if it did, because there should be a grounding lug on the pump motor for that wire to attach to.
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