OpenSprinkler › Forums › Hardware Questions › OpenSprinkler › Does Open Sprinkler AC have power supply minimum/maximum amperage? › Reply To: Does Open Sprinkler AC have power supply minimum/maximum amperage? October 17, 2015 at 11:32 am #40536 RayKeymaster Because the power supply cannot sustain that much current, if you try to open 15 valves at the same time it will cause the voltage on the power supply to drop instantly, and that will trigger a reset of the controller thus releasing all valves.
