Any relay or contactor that is rated for the motor HP will work. Assuming this is a single phase 230 volt motor, a one pole relay is code compliant, but I'd use a two pole.
The motor needs to be thermally protected, but almost all single phase pumps have protection built into the motor.
The Franklin control box might have a relay in it, most smaller ones do not. They do have a start capacitor, and a start switch. Some also have a run capacitor. An above-ground pump has all these built into the motor.
If the pump doesn't have the HP listed on the nameplate, you can figure a 2 HP will be around 10-13 amps, and a 3 HP will be 14-18.
The 15 amp relay in question would be code compliant only if it was rated for the motor HP.
Rob
The motor needs to be thermally protected, but almost all single phase pumps have protection built into the motor.
The Franklin control box might have a relay in it, most smaller ones do not. They do have a start capacitor, and a start switch. Some also have a run capacitor. An above-ground pump has all these built into the motor.
If the pump doesn't have the HP listed on the nameplate, you can figure a 2 HP will be around 10-13 amps, and a 3 HP will be 14-18.
The 15 amp relay in question would be code compliant only if it was rated for the motor HP.
Rob
