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Spa Model GFCI Required Wires Required
Portable Spas
All 240V spas (except
6300 control boxes
requiring high amperage
- see below)
One 50 amp GFCI Four #8 AWG copper
wires
Spas with the 6300
control box (when high
amperage is selected on
circuit board)
SEE CONFIGURATION
INSTRUCTIONS ON
NEXT PAGE.
One 60 amp GFCI Four #8 AWG copper
wires
Ultimate Fitness Spas
Fitness spa with 5.5 kW
heater
One 50 amp GFCI Four #8 AWG copper
wires
Fitness spa with two 11
kW heater and Fitness
Pro 2500 spa
Service 1: One 50
amp GFCI
Service 2: One 30
amp GFCI
Service 1: Four #8
AWG copper wires
Service 2: Three #8
AWG copper wires
Fitness Pro 4700 spa
Service 1 (swim
side): One 60 amp
GFCI
Service 1: Four #8
AWG copper wires
Service 2 (swim
side): One 30 amp
GFCI
Service 2: Three #8
AWG copper wires
Service 3 (spa
side): One 40 amp
GFCI
Service 3: Four #8
AWG copper wires
In-Ground Spas
Designer in-ground spas
with one 5.5 kW heater
One 50 amp GFCI Four #8 AWG copper
wires
Designer in-ground spa
with two 5.5 kW heaters
Service 1: One 50
amp GFCI
Service 2: One 30
amp GFCI
Service 1: Four #8
AWG copper wires
Service 2: Three #8
AWG copper wires
Designer in-ground spa
with gas heater
One 50 amp GFCI Four #8 AWG copper
wires