OpenSprinkler Forums Hardware Questions OpenSprinkler Design of the 24VAC version Reply To: Design of the 24VAC version



Because ACRET is basically the circuit ground (well, it’s connected to a current sensing resistor which is very small so it’s practically the ground of the circuit). For that reason, ACRET is basically 0V. In a circuit all voltages are measured against the ground, so if that point is ground, then it’s always 0V.