Cal Spas A857L Manuel D’Utilisation

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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