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2009 Inground Spas
LTR20091002, Rev. A
Preparing for Your New Inground Spa
www.calspas.com
6
All 240V spas must be permanently connected (hard
wired) to the power supply. These instructions de-
scribe the only acceptable electrical wiring procedure.
Spas wired in any other way will void your warranty
and may result in serious injury. See the wiring dia-
gram on page 7.
When installed in the United States, the electrical
wiring of this spa must meet the requirements of Na-
tional Electric Code, ANSI/NFPA 70-2008 and any ap-
plicable local, state, and federal codes. The electrical
circuit must be installed by an electrical contractor
and approved by a local building / electrical inspec-
tor.
GFCI and Wiring Requirements
The power supplied to the spa must be on a dedi-
cated GFCI protected circuit as required by ANSI/
NFPA 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 wir-
ing requirements.
Spa Model GFCI Required Wires Required
Designer inground spas
with one 5.5 kW heater
One 50 amp GFCI Four #8 AWG copper wires
Designer inground 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
When NEC requires the use of wires larger than #6
AWG, install a junction box near the spa and use #6
AWG wire between the junction box and the spa.
Wire runs over 85 feet must increase wire gauge to
the next lower number. For example: A normal 50
amp GFCI with four #8 AWG Copper wires run over
85 feet would require you to go to four #6 AWG cop-
per wires.
Read and follow the heater manufacturer’s safety and
installation instructions prior to installation and op-
eration. Incorrect installation may damage the heater
and void its warranty.
Testing the GFCI Breaker
Test the GFCI breaker prior to rst use and periodical-
ly when the spa is powered. To test the GFCI breaker
follow these instructions (spa should be operating):
Press the TEST button on the GFCI. The GFCI will 1.
trip and the spa will shut off.
Reset the GFCI breaker by switching the breaker 2.
to the full OFF position, wait a moment, then turn
the breaker back on. The spa should have power
again.
Electrical Requirements – US and Canada