13
J-300
North American J-315 and J-325 Convertible Models (60 Hz)
120V/15A† 240V/30A† 240V/40A
‡
Circuit Breaker: 15A, 1-Pole 30A, 2-Pole 40A
, 
2-Pole
Number of Wires: 3 (15A GFCI 
Cord US 
Only*)
4 (Hard Wire 
Only)
4 (Hard Wire 
Only)
Frequency: 60 Hz 60 Hz 60 Hz
Current Draw: 12A 21A 30A
*  All Canadian spas must be hard wired per CSA Canadian standards 
(page 8).
†
 In 15A/30A conguration, the heater will not operate while the jets 
pump is running in high speed. The factory setting is 120V/15A.
‡
 In 40A conguration, remove jumper JP1-2 on the board, to allow the 
heater to operate while the jets pump is running in high speed.
‡
 Caution (For 4-wire 240 VAC Heater Operation): Move the red 
wire on the main terminal strip (TB1) from position #1 to position #3. 
Make certain wires are connected exactly as shown in Figure D (Page 
17) before applying power. Failure to do so will result in damage to 
the circuit board and/or related components and void the manufactures  
warranty.