I know a pump will burn out faster on 110, but how much faster? I am trying to decide if it is worth the money to get an electrician to fix the 220v going to my pool pump area. This is for a 1hp motor.
I read that somewhere on this forum. I don't understand enough about electricity and motors to explain it very well, but someone said the pumps ran hotter at 120. I will try to find a link to that discussion.Are you saying a pump that is designed to run on 120 or 240, will burn out faster when run on 120 volts?? If so, I have never heard that before..
If the mains supply wire is sized appropriately, the current going through the winding's is exactly the same wired for 240v vs 120v. However, if the wire or cord is undersized, this can lead to a larger voltage drop for the 120v case than for the 240v which can lead to a higher current draw for 120v (and higher motor temperature).I read that somewhere on this forum. I don't understand enough about electricity and motors to explain it very well, but someone said the pumps ran hotter at 120. I will try to find a link to that discussion.
Nope. Exactly the same. Amps X Volts = watts. Look at the plate on a dual-voltage motor. It'll show two amperages-- one is half the other. It'll also show two voltages -- one is twice the other. It cancels.All things being equal, is a 220v 1hp Pump using less watts than a 110v Pump? I was always told it was half.
Casey,Half the amps
220v at 3.5 amps
110 v at 7 amps
Note hp = watts, you could say a 750 watt pump and it means the same as a 1 hp pump
I now realize that what I posted may have caused some confusion so let me explain further.If the mains supply wire is sized appropriately, the current going through the winding's is exactly the same wired for 240v vs 120v. However, if the wire or cord is undersized, this can lead to a larger voltage drop for the 120v case than for the 240v which can lead to a higher current draw for 120v (and higher motor temperature).
The hp rating of the pump does not directly translate into how many watts it uses.Note hp = watts, you could say a 750 watt pump and it means the same as a 1 hp pump