Owner`s manual
ELECTRICAL INSTALLATION REQUIREMENTS
12
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 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 6 AWG copper wire (unless local 
or state codes require a heavier gauge wire) and must be connected
securely to a grounded metal structure such as a cold water pipe. All
Master Spas equipment packs are wired for 240 VAC only. The only 
electrical supply for your 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 accessible to the spa occupants, but installed at least five feet 
from the 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 current fault is detected.
Power hook-up to the spa must be 240 volt 3 wire plus ground 
(6 AWG copper).
Route the cable into the equipment area for final hook-up to terminals
inside the control panel. The spa must be hooked up to a “dedicated”
240 volt, 50 amp breaker and GFCI. The term “dedicated” means the 
electrical circuit for the spa is not being used for any other electrical items
(patio lights, appliances, garage circuits, etc.). If the spa is connected to 
a non-dedicated circuit, overloading will result in “nuisance tripping”
which requires resetting of the breaker switch at the house 
electrical panel.
Rev. 11/07
Permanently Connected Equipment Assembly with Pump(s), Heaters, Luminaine,
Ozone, Spa Side Control(s), Pump shut off device, and Audio/Video Components.
NOTE: Some of the above components may be optional or not available with
every spa model.










