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Electrical Codes for Hot Tubs

electrical-codes-for-hot-tubs
Summary: Listing of electrical codes for hot tubs with examples of hot tub codes for home electrical wiring.

Electrical Code Definitions for Hot Tubs


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Hot Tub Codes in NEC, National Electrical Code Section 680

This listing provides an example of the typical electrical codes for hot tubs as found in the articles of section 640 of the National Electrical Code.

Highlights of the Codes for Hot Tubs include GFCI Protection for the electrical circuit and electrical equipment within the vicinity of the hot tub.

Code Adoption Information:
The codes shown are examples only and may not be current or accurate for your application or jurisdiction. Contact your local building authority for complete information.

  • NEC 680.22(A)(4)
    • Pools, spas whirlpool tubs and boathouses.
    • GFCI Receptacle outlets.
    • Receptacles that are within 20 feet or less of pools and outdoor hot tubs must be GFCI protected.

  • NEC 680.42(A)(1)
    • Hot tub/spa.
    • LFMC or LFNMC is permitted up to 6 feet for a package unit hot tub or spa.

  • NEC 680.42(A)(2)
    • Hot tub/spa.
    • A cord up to 15 feet is permitted for a GFCI-protected package unit hot tub or spa.

  • NEC 680.42(B)
    • Hot tub/spa.
    • Bands used to secure hot tub staves are exempt from bonding.

  • NEC 680.43(A)(3)
    • Pools, spas whirlpool tubs and boathouses.
    • GFCI.
    • GFCI protection is required for receptacles that provide power to indoor spas or hot tubs

  • NEC 680.44
    • Pools, spas whirlpool tubs and boathouses.
    • GFCI.
    • GFCI protection is required for outlets supplying power to any self-contained packaged spa, hot tub or field-assembled units with heating that is less than 50 Amps.

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Questions about Electrical Codes for Hot Tubs, Spas and Pools



Questions about Residential Electrical Wiring Codes for Hot Tubs, Pools, and Spas


Question from Von, a Homeowner in Phoenix, Arizona

Should a 110 volt GFCI be Installed to Provide Ground Fault Protection for a 240 volt Spa?

I have a spa with a VS510SZ electric panel. The sticker shows 240 volt 60hz 40amp max. Can we run a 50 amp GFCI sub panel to feed power to it, or should a 110 volt GFCI circuit be installed with the 50 amp sub-panel?

Dave’s Answer:

Von, The spa is protected for ground fault when using a 240volt GFCI Circuit Breaker in the panel providing power to the spa.





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