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The electrical requirements for your spa are found on the Electrical Guide Sheet contained in the
Welcome Kit for your specific model. It is very important to review your electrical requirements
before starting installation.
Electrical Service Considerations
The Electrical Service determines how many pumps can run in conjunction with the heater. If the
dedicated GFCI circuit was installed with a smaller breaker than the recommended size (typically
60 amps), your heater will automatically shut off to avoid tripping your circuit breaker if too many
pumps are activated (including the blower). Heating will automatically turn back on after pumps
have been shut off. The heater will also automatically shut off on larger spas when 3 or more
pumps (including the blower) are turned on. All of this may occur even though the circulation
pump continues to run – when the heater is on, progressing bars will be indicated from the bot-
tom to the top of the heater icon.
!
WARNING: Wiring to your spa must be COPPER ONLY! Note that the wiring from a main
panel to a sub-panel for the spa must be copper and the sub-panel is rated for copper (CU).
The length of the wiring from the panel or feed to your spa also has to be determined. If the total
run exceeds 75 feet, the wire size must be increased by one wire size to adjust for the corre-
sponding voltage drop. To make future service work easier we recommend leaving at least 6'
of slack in the main electrical wire which may be coiled inside the cabinet. Ground Fault Circuit
Interrupt (GFCI) Requirements: All spa electrical circuits must be GFCI protected on a dedicated
circuit.
It is common practice for electrical service for a spa to be supplied by a regular two-pole breaker
at the rated amperage at the main panel, and the disconnecting means (NEC Article 100) is usu-
ally a 125-amp sub-panel with the required GFCI breaker(s) mounted inside. The GFCI breaker
becomes the required disconnecting means. These sub-panels sometimes will not have a ground
bar included and it must be purchased separately. The ground bar is a small metal bar with holes
provided for ground wires and screws to secure the wires to the ground bar. This ground bar is
NOT to be bonded or connected to the neutral bar, and the neutral bar must be isolated from any
grounding source. The GFCI pigtail in this instance is connected into the neutral bar—not the
ground bar.
Electrical Set Up