I have a 1.5hp elect motor that was wired for 220v.How do i change it to 110v

It would be easier to change the 220v to a 110v outlet

That's a 3 phase motor(ph3). And probably a 220v/460v? Or a 110v/220v, BIG difference! You'll need to figure out your supply voltage and wire it accordingly. Normally, if 220/460, all 3 black wires are hot legs, and this is probably what you have, because 110v will normally have higher amperage than what you posted. And if the motor runs backwards, switch any leg with 1 other. Hope this helps!

The 220v / 110v are the two wiring options on that motor. They usually come pre- wired for 220. The wiring can be changed to where it will run on 110. Be sure to get it right. if you wire a 110v motor to 220v it will go bang and die.
A two speed motor will have two hot wires, one common, and one ground (4 wires). Single speed will have three wires. You can't make a single speed motor a two speed motor.

The short answer is: No. The longer answer is, the motor and controls were designed to run on 220 Volts, and as such cannot simply be re-wired for 110 Volts. You basically have 3 options: 1) Have a licensed electrician wire in a 220V circuit to your shop/garage/shed for the compressor. 2) Change out the motor for one designed for 110V (finding one that will work could be difficult, and might require modification of mounts, spindles, gears etc and probably not worth the trouble...but technically possible) 3)purchase a step UP transformer which can turn 110V North American household current into 220V.

First, be absolutely sure that your motor is wired for 220v. If it is 110v and you apply 220v the motor will die instantly (after a loud bang). Also verify that your supply is in fact 220v.

Without exception 220v power should be supplied by two wires of the same color, as they are both "hot". Black and white wires are common in 110v wiring, the black being hot and the white neutral.

Every pool pump I have worked on has had two terminals where the wires attach to the motor, L1 and L2, wire orientation does not matter.
Evidently yours only has one. Apparently there is no wiring diagram on the side of the motor either, which is also atypical. Best bet is to call the factory for assistance with this.

Most pumps have the eiting diagam on the outer motor housing. What brand is the pump? Some motors have a jumper that is moved over to 220v or 110v post and the red/black(220) or white/black(110) stay on the regular screw terminals. Ground stays on the same terminal usually a green screw

Hi Pete,
On the side of the motor on the label should be a wiring diagram. The diagram will tell you how to wire fro high 220v and low 110v ...
If the nameplate is single voltage only then the motor cannot be rewired for the lower voltage...
Also check the motor RPM nameplate as compared to the others...you may have a 1725 motor and the newer ones a 3450 motor...that would give them double the RPM's if the gearing or pulley sizes are the same...so.. if you have the right voltage and the RPM's of the motor are the lower, then you possibly could change the pulley sizes to speed up the compressor...

Lots to check and think about...

heatman101

You have 220v running into your motor, the red and the plack are in most cases the same 110v line and what your calling a white netural is a common line. In other words the second half of your 220v line. If your red and black are the two opposing 110v lines that make up your 220v and they are put on the motor and turned on they short aginst each other and blow the breaker. One of your 220v lines should come into your hi -low switch and then split to your high and low on the pump. The other half of your 220v line will go to the common or what your calling nuteral. The difference is a netural completes a 110v circut and a common completes the 220v circut it will take to run the motor. One of the splits will complete the low speed circut and the other will complete the high speed circut. You need to check your voltage comming into the spa, the way the spa is wired (110v-220v), and how the motor is wired (110v-220v). For your spa this will be in your owners manuel or on a scematic inside a panel or door and is quite often a plug you change from one spot to another. On your motor will have a scematic on the back of the motor that will tell you haw to adjust the wireing already in place on the wire board of the motor. This may sound deep but if all your voltages are set the same and your high and low are the same leg of power, this should fix your problem.

look on the motor cover or on the wiring cvr on mtr or on the inside of the wire termination cvr

I can't blame you for askig, but here's my response. 5 HP is 3750 running watts. or about 35 amps at 110 volts and it would take somewhere around 50 amps to start it provided the motor could even be wired for 110 which I don't believe it can and for that exact reason. I'm sorry, but it's just not practical.