Electrical Requirements for New Service and Upgrades
If installed in the United States, the electrical wiring of this hot tub must meet the requirements of section 422-20 of the National Electric Code (NEC) and any applicable state or local codes. The electrical circuit must be installed by a licensed electrician and approved by a local building/electrical inspection authority.
and for all operating hot tubs

1  All 240V hot tubs must be permanently connected (hard wired) to the power supply. 120V hot tubs may use GFCI cord, plugged into a grounded outlet. Supplying power to the hot tub which is not in accordance with these instructions will void both the independent testing agency’s listing and the manufacturer’s warranty.

2  The power supplied to the hot tub must be a dedicated circuit with no other appliances or lights sharing the power.

3  When determining the current, voltage and wire size required for the hot tub configuration to be connected, refer to manufacturer’s recommendations and keep these points in mind:
  • Wire size must be appropriate per NEC and/or local codes.
  • We recommend THHN copper core wire.
  • All wiring must be copper to ensure adequate connections.
  • Do not use aluminum wire.
  • When using wire larger than #6, add a junction box near the hot tub and reduce to short lengths of #6 wire between the junction box and the hot tub.

4  The electrical supply for the hot tub must include a suitably rated switch or circuit breaker to open all ungrounded supply conductors to comply with Section 422-20 of the National Electric Code, ANSI/NFPA 70. The disconnecting means must be readily accessible to the hot tub’s occupant but installed at least 5 feet (1.5m) from the hot tub water.

5  The electrical circuit for the hot tub must include a suitable ground fault circuit interrupter (GFCI) as required by NEC Article 680-42.
The disconnect must be readily accessible and visible to the spa occupant but installed at least 5 feet, measured horizontally, from the spa water.