Results 1 to 4 of 4

Thread: Hot tub sub panel supplying 120 v circuit

  1. #1
    Join Date
    Oct 2014
    Location
    United States, Indiana
    Posts
    189

    Hot tub sub panel supplying 120 v circuit

    I have a 48 amp 240 volt hot tub to wire. (Nameplate says 40/48 amps) If I install a 60 amp sub panel, what about installing a 20 amp, 120v breaker for an outlet from that same panel? (For a 120v outlet). Thank you?

  2. #2
    Join Date
    Nov 2016
    Location
    Dublin, GA
    Posts
    109
    Should not be a problem if the panel is installed in accordance with requirements applicable to any other sub panel.

  3. #3
    Join Date
    Dec 2010
    Location
    Tennessee NEC:2008
    Posts
    3,898
    Quote Originally Posted by Stevenfyeager View Post
    I have a 48 amp 240 volt hot tub to wire. (Nameplate says 40/48 amps) If I install a 60 amp sub panel, what about installing a 20 amp, 120v breaker for an outlet from that same panel? (For a 120v outlet). Thank you?
    Be careful with the nameplate ratings on the tubs. Some haven't factored in the 125% for the motor. So if they say 40A and haven't figured in the 125% then you really need a 50A circuit. The 48A would actually need a 60A.

    40 x 125% = 50
    48 x 125% = 60

    So you need to see the specs on the tub to see what they say. It all depends on the number of pumps & heaters and whether they run at the same time.
    If you aim at nothing, you will hit it every time!

  4. #4
    Join Date
    Apr 2009
    Location
    Williamsburg, VA
    Posts
    3,350
    wag, but a nameplate of 40/48A is depending on how the dip switches on the board are set and if it is a 50 or 60A spa. Basically amounts to what pumps can be run at x speed with or without the heater or jet/air pump on. I dont see a problem running a 120V receptacle from a 15 or 20A breaker from a 60A spa subpanel provided it's a 4 wire feed. Usually there's a receptacle close enough to the spa and the disco is a 50A/60A GFCI breaker.

    Keep in mind that you will need #4 Cu or equivalent Al for a 60A panel.
    Electricians do it until it Hertz!

Posting Permissions

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