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DO NOT DIVE.
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DO NOT DIVE.
ELECTRICAL REQUIREMENTS
ELECTRICAL REQUIREMENTS
HAVE YOUR ELECTRICIAN READ THE FOLLOWING INFORMATION
BEFORE INSTALLATION BEGINS
Electrical connections made improperly, or the use of wire gauge sizes for incurring
power which are too small, may continually blow fuses in the electrical equipment
box, may damage the internal electrical controls and components, may be unsafe
and in any case will void your warranty.
It is the responsibility of the swim spa owner to ensure that electrical connections
are made by a qualified electrician in accordance with the National Electrical Code
and any local and state electrical codes in force at the time of installation.
These connections must be made in accordance with the wiring diagrams found
inside the control box. This equipment has been designed to operate on 60Hz.
alternating current only, 240 volts are required. Make sure that power is not
applied while performing any electrical installation. A copper bonding lug has
been provided on the electrical equipment pack to allow connection to local
ground points. The ground wire must be at least 8 AWG copper wire and must
be connected securely to a grounded metal structure such as a cold water pipe.
The supply wiring to the swim spa must utilize a symmetrically grounded system.
The swim spa must not be wired to electrical systems utilizing no ground (IT) or
TN-C grounding. Be sure to have a licensed electrician examine and ensure proper
grounding is provided. All Master Spas equipment packs are wired for 240 VAC
only. The electrical service for your swim spa must include a 50 AMP switch or
circuit breaker to open all non-grounded supply conductors to comply with section
422-20 of the National Electrical Code. The disconnect must be readily acces-
sible to the swim spa occupants, but installed at least five feet from the swim spa.
A Ground-Fault Circuit Interrupter (GFCI) must be used to comply with section
680-42 of the National Electrical Code. A ground fault is a current leak from any
one of the supply conductors to ground. A GFCI is designed to automatically shut
off power to a piece of equipment when a ground fault is detected.
Service to the swim spa must be dedicated 240V, 50A 3 wire plus ground (#6
AWG copper with minimum #8 AWG copper ground).
Route service into the equipment area for final hook-up to terminals inside the
swim spa control system. The swim spa must be hooked up to a “dedicated” 240
volt, 50 amp breaker and GFCI. The term “dedicated” means the electrical circuit
for the swim spa is not being used for any other electrical items (patio lights, appli-
ances, garage circuits, etc.). If the swim spa is connected to a non-dedicated circuit,
overloading will result in “nuisance tripping” which requires resetting of the break-
er switch at the house electrical panel.
201412
Configuration 2 - 240V, 50A GFCI
Note: Electrical requirements by model is shown in Model Specifications. Only electrical configurations pertain-
ing to the models referenced in this manual are shown.
