Question about AO Smith 2 Hp Spl 3450rpm M56 Frame 115/230 Volts Replacement Air Compressor Motor Electric Motor No.B381

2 Answers

Rewiring mootor from 230v down to 115v

I have a century pump motor, part number 8-152000-02. 2.0 hp. 3450 rpm. the motor is set on 230v and i would to change it to 115v but the wiring daigram on the cover plate is missing.
the motor is wired as:
terminals from the switch to the motor
1 white black and yellow
2 ----- -----
3 black
4 red
5 white
6 white yellow
can you help with this problem
thank you

Posted by on

2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Scholar:

    An expert who has written 20 answers of more than 400 characters.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 121 Answers

Not amperage draw doubles from 12 amp to 24 amp. A thirty amp circuit 10 gauge wire, will need to be wired from the breaker panel. a single 35 amp. breaker will be needed. Depending on the motor a larger circuit may be needed. Using 40 amp wire (8 guage wire) and a 40 amp circuit breaker may be required.

Posted on Oct 30, 2011

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • AO Smith Master
  • 1,383 Answers

Diagram for aosmith motor b381 is here: http://www.electricmotorwarehouse.com/IMAGES/B381_connection.htm

However, I believe that this motor will be more efficient at 230v depending on load conditions. At 115v this motor will draw more amps and tend to run hot, but situation rules. Enjoy

Posted on Dec 14, 2008

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

How to rewire my century 3hp ac motor part # 8-141443-02 from 230v to 120v


look on the side of motor it has a schematic for 110 volts and 220 volts have to move wires or turn a switch

Sep 11, 2015 | Century Pool & Spa

1 Answer

How do I get a wiring diagram for motor model 370200


There should be a wiring diagram under the connection cover plate that tells how to connect wires for both 115v and 230v service.

By the way, any motor of any brand with a #56 frame and 1 hp or better that runs at 3450-3600 rpm should be suitable for use on a table saw. 1.5 hp would be better. (I upgraded mine to 2hp)
Harbor freight has a suitable 1.5hp replacement motor for $140.
Depending on the motor you get, you may have to buy a pulley at the same time to match the shaft diameter and blade rpms.

Sep 25, 2014 | Saws

1 Answer

How to wire the 115v/230v magnetek pool pump motor (1.5 Hp wth sq flange, 56Y) for 115V ?


if you are not a motor service person do not try this your self get the right help be safe

Sep 23, 2013 | AO Smith 1.5hp 1800RPM 56 Frame Farm Duty...

1 Answer

How do you wire a type b 3450 rpm mod.c48k2pa105c5 motor to electrical box


two red wires means 220 volt those are both hot green is ground
red to L1 2nd red to L2 then green to ground ( to case) make sure on side of motor it is wired for 220 volt

Apr 03, 2013 | AO Smith A O Smith Motors Century 1hp 115v...

1 Answer

Century single phase 2 hp 3450 rpm type cs motor Frame f56


the motor is on 220 volts ,i like hook that up on 120 volts ,,thanks

May 10, 2012 | Air Tools & Compressors

1 Answer

The pump comes factory set for 230v. Power to the motor is 115v so I switched the jumper as indicated. The jumper is set on 2 posts with an arrow pointing to 230v. I moved it to 1 post and the arrow now...


CHECK YOUR BREAKER IT MIGHT BE THAT YOU ARE 230V .. IF IT IS A WIDE BREAKER ITS 230 OR IF IT IS A SLIM BREAKER ITS 115V , A VOLT METER IS YOUR BEST FRIEND.. REMEMBER TO VOTE FOR YOUR FAVORITE FIXIT GUY ! THANKS JAY

Jun 29, 2010 | Hayward Super Pump 1 1/2 - Hp for In...

2 Answers

I have a 1hp 3450 RPM single speed AO Smith motor on my pool pump and it just quit. My question is can I replace it with a two speed motor? If so I'm sure I will need some type of controler to change the...


Some motors have two speeds listed on the spec plate, study the wiring diagram on the plate to see if the speed is set by the way you wire it.(which leads you twist together at the motor)Good luck

Nov 22, 2009 | AO Smith A O Smith Motors Century 1hp 115v...

1 Answer

My motor is wired for 230v and I need it to be 115v


It should be. Look closely at the motor nameplate and you should see a small diagram telling how to connect the motor for 115v or 230v. Most newer pumps have a small selector of some sorts. Either a plug that pulls off a couple post the include an idicator arrow for where to set the plug for either voltage, or a dial you turn to show it. Either way, you should be able to set the motor for 115 rather easily.

Jun 14, 2009 | Pentair Whisperflo 3/4 Hp 115/230v

Not finding what you are looking for?
AO Smith 2 Hp Spl 3450rpm M56 Frame 115/230 Volts Replacement Air Compressor Motor Electric Motor No.B381 Logo

2,369 people viewed this question

Ask a Question

Usually answered in minutes!

Top AO Smith Air Tools & Compressors Experts

John Trevino

Level 3 Expert

1383 Answers

Joe Garcia
Joe Garcia

Level 2 Expert

205 Answers

Brad Brown

Level 3 Expert

15214 Answers

Are you an AO Smith Air Tool and Compressor Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...