Cal Spas F-168, Owner'S Manual, Page: 9 / 74

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structure, it is highly recommended that you consult a structural engineer or contractor to ensure the
structure will support the weight of 150 lbs per square foot (732 Kg/m
2 ).
2.4 240 Volt Electrical Installation
NOTE: These instructions describe the only acceptable electrical wiring procedure. Spas wired in any other
way will void your warranty and may result in serious injury. The electrical circuit must be installed by an
electrical contractor and approved by a local building or electrical inspector. Failure to comply with state
and local codes may result in a fire or personal injury and will be the sole responsibility of the spa owner.
All 240V spas must be permanently connected (hard wired) to the power supply. When installed in the United
States, the electrical wiring of this spa must meet the requirements of the NEC 70 and any applicable local,
state, and federal codes. The power supplied to the spa must be on a dedicated GFCI protected circuit as
required by NEC 70 with no other appliances or lights sharing the power. Use copper wire with THHN
insulation. DO not use aluminum wire. Use the table below to determine your GFCI and wiring requirements.
Wires that run over 100 feet must increase wire gauge to the next lower number. For example: A normal 50
amp GFCI with four #6 AWG copper wires that run over 100 feet would require you to go to four #4 AWG
copper wires.
2.5 GFCI and Wiring Requirement
Applies to all Fitness spas except F-1781
Standard configuration with one 5.5 kW heater
Spa
Model
Control
System
GFCI Required Wires Required Wiring Diagram
F-1681 BP20X One 60 amp GFCI
Four #6 AWG copper
wires
Use wiring diagram (see
page10)
Configuration (auxiliary 5.5 kW heater)
Spa Model
Control
System
GFCI Required
Wires Required Wiring Diagram
F-1325 BP501X
One 50 amp GFCI & one 40 amp GFCI
Four #6 AWG copper
wires
Use wiring diagram
(see page 10)