A 120V timer switches one hot wire.I'm referring to the pump motor.
My understanding of Timers is they are either 120 or 230. But cannot be made to do both.
Both existing motors are 120/230. Based on what I now understand, the main pump is hooked to 120, the backup to 240.
View attachment 115957
perhaps its a little hard to tell, but the main pump black wire is connected to #2, main pump white wire connected to #4, and the bare copper wire is connected to the green ground coming from the breaker, as well as being wrapped around a grounding screw, which is hidden behind the red twist on cap.
Would there be any advantage to switching my current main pump to 240v?
One of the red wires is currently connected to the Neutral terminal of the breaker.
So, the clock and pump are getting 120 volts.
The label on the timer says that the clock is 120 volts. Unless the clock has been replaced, it should be 120 volts.
One of the red wires has some duct tape on it. I'm guessing that it might be an attempt to identify it as the neutral.