We just got our pool up. Opened the salt generator packaging and it is a 220/240v appliance, our pump is 115v with a pre installed plug. They need to be on the same timer. I have read until my head hurts… Does anyone know if I can run 240 into a timer and have one output run to the salt generator from the timer at 220/240 and another to a 120v outlet for the pump to plug into? What model timer? their diagrams are awful for merely semi handy people 😂
Assuming the amps you state are accurate, that should be fine... almost.
You will have 15A load on one pole and 12A load on the other.
Despite totaling 15A, you will need a 20A circuit, breaker and wire. That is because you are only allowed to plan to load circuits to 80% with some exception. 80% of 20A is 16A, which is fine.
You will need 4-wire hot-hot-neutral-ground wiring from the panel through the timer to the 120V appliance. The neutral bypasses a 240V timer.
There is only one snag. You are not allowed to have this specific combination: "the 12A load is hardwired, yet the 3A load uses a cord-and-plug connection". That is because receptacles are not allowed on circuits where the hardwired load speaks for >50% of the circuit ampacity (20A).
All of this needs GFCI protection, the farther from the pool the better. It might be fed out of a pool panel that has GFCI protection already. If not, the only way to protect this split-phase combination of loads is with a GFCI circuit breaker in the supplying panel.