whirlpool tub with accessories

Discussion in 'Electrical Forum discussion & Blog' started by M3, Feb 28, 2008.

  1. M3

    M3 New Member

    Messages:
    39
    Location:
    Minnesota
    I'm installing a WP tub which I know does require a GFI for the pump assembly...which has been inspected and approved. But I forgot that this tub also has separate backrest heater and lights which have a separate plug. I'm wondering if I need to have a separate GFI for the other accessories, or can I run off one GFI. I'm believe that I need to run another one...:(
  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    21,814
    Location:
    New England
    Does the manufacturer's spec require multiple circuits? If not, you should be able to supply them from the same source.
  3. M3

    M3 New Member

    Messages:
    39
    Location:
    Minnesota
    In reviewing the directions again the manufacturer states; "The electrical system for baths with 1 heated backrest must be connected to an independent circuit protected by a 15 amp GFI. The turbine must be connected to its own circuit without any interrupters or switches. Check local wiring codes."
  4. M3

    M3 New Member

    Messages:
    39
    Location:
    Minnesota
    Ok, now I'm even further confused... The manufacturer finally called me back pertaining to this and said: "only one 15 GFI circuit is needed for both the heater and turbine."

    Does anyone know what the actual code is? I have the 2005 NEC and it does not address tubs with "multiple needs", or I'm not finding it...

    Thanks
  5. jwelectric

    jwelectric Electrical Contractor/Instructor

    Messages:
    2,529
    Location:
    North Carolina
    680.71 Protection.
    Hydromassage bathtubs and their associated electrical components shall be protected by a ground-fault circuit interrupter.
  6. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    21,814
    Location:
    New England
    It sounds like the manufacturer requires two independent circuits, since the turbine requires an independent circuit. Local codes usually say to follow the manufacturer's instructions, thus, I think you need two gfi circuits.
  7. jwelectric

    jwelectric Electrical Contractor/Instructor

    Messages:
    2,529
    Location:
    North Carolina

    680.71 Protection.
    Hydromassage bathtubs and their associated electrical components shall be protected by a ground-fault circuit interrupter.
  8. statjunk

    statjunk DIY Senior Member

    Messages:
    542
    I've installed two of these. One recently and one in the past. Both of those units required seperate GFI protected circuits.

    Tom

    [​IMG]
    Last edited by a moderator: Jun 4, 2008
  9. M3

    M3 New Member

    Messages:
    39
    Location:
    Minnesota
    Thanks for all the input. I guess to be on the safe side I think I'd better call the local building inspector (MN) to see what he says. The code as JW quotes says "a ground fault circuit interupter.: Not separated; the NEC is NOT specific to multiple items.

    The manufacturer representative told me "one GFI circuit for both items" which is what I have. But everything I've read in forums in the past has illuded that multiple items on one GFI can cause false trips. That's why I wanted to ask.

    I'll let you know what I'm told.
  10. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    21,814
    Location:
    New England
    The inspector may refer to the manufacturers instructions...if they say two circuits in print, he'll want two circuits. What amount of power do the things each draw? If it is within the limits of the single circuit, he may overlook it. If something was going to trip the gfci, having them on separate circuits probably wouldn't make any difference.
  11. Speedy Petey

    Speedy Petey Licensed Electrical Contractor

    Messages:
    988
    Location:
    NY State, USA
    This is simply not true. At least in the sense that it will cause no more "false trips" than anything else.
  12. M3

    M3 New Member

    Messages:
    39
    Location:
    Minnesota
    The blower/heater draws 11 amps, and the separate light kit draws 0.1 amps. Nonetheless the inspector said: "if it has two plugs, it needs two separate GFI circuits." So, I'm pulling another set of wires and mounting to faceless GFI's outside the tub and connecting them to two standard outlets in the motor compartment.

    Thanks to everyone for all your input.
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