Power supply requirements, 780 camden, certa, chelsee, hamilton models – Sundance Spas 850 Series User Manual
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Power Supply Requirements
780 Camden, Certa, Chelsee, Hamilton Models
Important: Your qualified technician must perform minor circuit board modifications when either models’ alternate electrical configuration
is used. To avoid damage to the hot tub, do not activate power until circuit board modifications have been made. We recommend Square-
D or Cutler Hammer Breakers.
Standard 50 Amp 3-Wire Power Configuration
(Factory Setting)
• Required Voltage:
240 VAC (2 Hots, 1 Ground); See diagram page 9.
• Required GFCI Breaker:
50 Amp Dual-pole (Hard Wired Only)*
• Number of Wires:
Three - Copper Only (Red, Black, Green)*
• Max Spa Current Draw:
36 Amps
In 50A configuration the heater
will not operate while both jets pumps are running in high speed. Note: pump 2 runs only in high speed.
Alternate 40 Amp 3-Wire Power Configuration
(For Homes Where 240V/50A or 240V/60A Power is Unavailable)
• Required Voltage:
240 VAC (2 Hots, 1 Ground); See diagram page 9.
• Required GFCI Breaker:
40 Amp Dual-pole (Hard Wired Only)
• Number of Wires:
Three - Copper Only (Red, Black, Green)*
• Max Spa Current Draw:
26 Amps
If the household’s electrical service does not have the full 240V/50A or 240V/60A power available, the spa may be connected to 240V/40A service if a
minor circuit board modification is performed by your qualified technician. In this configuration, the heater will yield the same rapid temperature increase
as in 50A or 60A operation but
will not operate while either jets pump is running in high speed. Note: pump 2 runs only in high speed.
Alternate 60 Amp 3-Wire Power Configuration (Not Available on 1-Pump Camden Models)
(For Maximum Heater Performance)
• Required Voltage:
240 VAC (2 Hots, 1 Ground); See diagram page 9.
• Required GFCI Breaker:
60 Amp Dual-pole (Hard Wired Only)
• Number of Wires:
Three - Copper Only (Red, Black, Green)*
• Max Spa Current Draw:
45 Amps
In 60A configuration, the heater
will operate while both jets pump are running in high speed. This may be preferable for owners of hot tubs in cold
climates because it will help the hot tub maintain water temperature during use. Note: pump 2 runs only in high speed.
*All models: wire size must meet NEC recommendations and is determined by maximum current draw and length of run.