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Wiring a single phase 14 in fan

6 wires from fan motor plus capacitor . 3 wires from speed controler

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  • diggermart Nov 20, 2007

    thanks will get back with relevant details regards mart

  • diggermart Nov 22, 2007




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Hi, i have a ''hunter 23918 classic original which runs suddenly slowly, anyone who can help me out, or can forward me a wire diagram, thanks, from johnbraks.

Posted on Apr 21, 2010

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Please do not rate this as an answer, just wanted to see if you have a model number of the fan, motor, speed controller, etc. many people here can help you, but providing an answer without knowing exactly how the default wiring is set up is never a good idea.

Posted on Nov 20, 2007

  • Trinity Sabre
    Trinity Sabre Nov 22, 2007

    ok, now you should rate mine as a "thanks for trying" or similar so that this thread will show up on the main page again. unfortunately i don't have any experience with this setup, but i am relatively certain there are many people here that do. and with the newly supplied information, someone should have this problem taken care of in no time.



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Table fan winding&connection daigram

  • I have a Bionaire brand table electric fan.
    • It has a 3 speed fan motor.
    • The electric motor is a BM-122 Decomin brand 3 speed motor.
      • There are 6 wires:
        • Red wire.
        • Black wire.
        • White wire.
        • Yellow wire.
        • Gray wire.
        • Blue wire.
          • The motor has a 4mu 250volt capacitor.
  • This fan has an oscillating grill with independent sync motor, and timer circuit.
  • Something was wrong with the solid state circuitry (everything worked but the motor!), but a quick test of the motor indicated it does work.
  • The motor uses a start and run capacitor.
  • I decided to change controls to a simple mechanical switch and fore go for now anything beyond 3 speeds.
  • The printed circuit board shows the following connections:
    • Black wire
    • Blue wire
    • Yellow wire
      • Are respective for the:
        • High fan motor speed
        • Medium fan motor speed
        • Low fan motor speed
  • I think the gray wire goes out to the oscillator motor.
    • The Red wire is marked as Line, for the power source.
  • All wires are in continuity with each other EXCEPT RED is not with any other wire. How to Verify Fan Motor Wiring Connections
    • Checking the Motor and Capacitor Connections
    • Double check your connections using the fan wiring diagrams.
    • You should see that there is a separate motor winding for high speed.
      • The concern is that there is a capacitor for the motor.
      • So I'm thinking that the motor may have to start with the slower speeds first.
      • and not start in the high speed because the motor or capacitor has not been designed for that type of operation.

Sep 29, 2016 | Dryers


How to Reverse the Rotation of Single Phase Capacitor-Start Electric Motors

Reversing the rotation of electric motors can be done easily with 3-phase motors. This can be easily achieved by swapping the connection of any two motor leads. But 3-phase motors are usually found and used for industrial purposes. The ones found and used in our homes, from water pumps to electric fans, are single phase capacitor-start type motors. Unlike 3-phase motors, reversing the rotation of single phase electric motors is no easy task. Swapping any two motor leads will not result in the reversal of the motor rotation. Analysis of the motor windings and connections are necessary before any modification can be done to achieve the desired result. Let's take a 3-speed single phase capacitor-start electric motor with electrical diagram shown below as an example. Make sure the motor is disconnected from the power supply before attempting to follow this tip. This tip is intended only for individuals with electrical knowledge, necessary tools, and understand the risks associated with handling electrical equipments and devices.


The first step in the process is determining the start winding which is connected to the line (AC white) and to one side of the start capacitor. To accurately determine the start winding, disconnect all motor leads from the start capacitor and the speed switch for multi-speed motors and then setting your ohmmeter to the lowest scale (R x 1), measure the resistances between the AC white line and each of the motor leads connecting to the start capacitor. The one with the least resistance is the starting winding lead.

Once the start winding lead going to the capacitor is determined, reconnect the capacitor then connect the black AC line to the found start winding lead (marked X). Connect the white AC line to L of speed switch, the motor lead formerly connected to AC white to 3, red to 2, and white to 1 as shown below. Leave the green/yellow ground wire connection as is.


Below are the wiring modifications for 2-speed and single speed single phase capacitor-start electric motors.





on Jan 11, 2011 | Dryers

2 Answers

Replace compacitor on Carrier 5 ton 3 phase AC

Your 3 phase unit should not have a capacitor. I'm guessing it's single phase. If it's a single capacitor than the compressor should not be going to it also. To test the motor, common to start plus common to run should equal the ohms you get between start and run. For instance, 1.2 ohms+ 2.2 ohms= 3.4 ohms. Follow the wiring diagram on the inside of the door, send model number!!

Aug 29, 2017 | Carrier Heating & Cooling

1 Answer

I have a 1/3 hp motor with a capacitor. There are four motor leads coming out of motor, the capacitor is mounted in the wiring box. This motor does not have a centrifugal switch, to isolate the capacitor...

I am in the process of replacing a capacitor on a Craftsman 6 in 1/3 grinder, 2.8 amp, single phase, 110v. Not sure on the centrifugal switch. model 319.190621, ser B9530. When I took the old one out the black wire from the capacitor went to the cluster of back wires (in my case 3) in the wire nut. The blue wire from the grinder went to red wire from the capacitor in a wire nut. Hope that helps you....

Maybe you can help me... the specs on the capacitor burned off when it failed. Can you tell me what the capacitor specs are on yours?

Nov 16, 2010 | Craftsman 6" Bench Grinder with Lamp

1 Answer

I,m not exactley sure how to connect the wiring to the capacitor,on a three phase unit,or one that is wired for three phase (a/c).

If it is a three phase motor then it will not require a capacitor. Residential A/C compressors and fan motors have 3 wires coming out of then but they are not three phase, they are still single phase. If you are working with a residential system then you should have one wire that is common, one wire that is the start winding, and one wire that is the run winding. To connect it, L1 from the contactor would connect to one side of the capacitor. Connect the run wire to the same side of the capacitor. Connect the start wire to the opposite side of the capacitor. The common wire will connect to L2 on the contactor.

Sep 02, 2010 | Heating & Cooling

1 Answer

Wiring diagram for electricmotor with capacitor

On most motors the wires with the tabs are connected to the capacitor (usually brown). White wire is neutral and color wires are speeds.

May 09, 2010 | Heating & Cooling

1 Answer

Changed out blower motor on elect furnace.the old motor had three wires one fed the motor is revirsable has purple wire,red,blue,black.hooked up purple 1st phase,red for high 2nd phase. is...

hmmm . you better check on that before firing it up ... normally the colored wires are for different speeds .. only one speed can be connected at a time .. usually the high speed winding is used for air conditioning and a lower speed winding is selected by a relay for heating .. ... the way the capacitor is hooked up determines which way the motor will turn .. your old motor with just 3 wires was probably a single speed motor .. normally the black wire will be connected permanantly to one phase .. the other phase then goes to the selected speed winding (color of wire) .. one goes to the starting capacitor . the others even if not connected will be hot electrically so need wire nuts to prevent shorts ..

Jan 03, 2010 | Dayton (2C373) Fan

1 Answer

Wiring a 220v single phase motor and capacitor

Black and white are usually power. an ohmmeter will confirm. Brown are for capacitors. There is almost always a diagram on the motor someplace. Eric

Jun 17, 2009 | AO Smith A O Smith Motors Century 1hp 115v...

2 Answers

Voltage 1phase or 3 phase 240 volts BTUs M# 585epo36o75

Looking at the model number, it appears to be a 3 ton. (36,000 btu) Most all residential units are single phase and most all commercial are 3 phase. One way to tell, look to see if the compressor has a capacitor. 3 phase never use capacitors on the compressors as they are not needed. Some residential units have a "Dual" capacitor. That is, it has 3 terminals, 1 common, 1 for condenser fan motor, and 1 for the compressor. Also, this info should be printed on the unit's lable.
Good Luck and hope this helps.

May 09, 2009 | Amana Comfort Zone 12M32PBEH Air...

2 Answers

Electric motor and speed control circuit diagram

Start Here, ( RC motor speed control) if not helpful post back with more details.

Sep 18, 2008 | Toys

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