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Hardware Help with wiring a AC motor + capacitor, Any electricians around

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TSgarethlye
post May 24 2018, 02:18 AM, updated 8y ago

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I have a new AC motor and a capacitor for it, but I have no clue right now on the wiring from the wall to the cap and the motor. I know it's a three speed motor, I basically want it to run on the highest speed.

AC Motor diagram:
user posted image

Capacitor:
user posted image

Wiring off the Motor:
user posted image

Could any of the electrical gurus here help me out? smile.gif

This post has been edited by garethlye: May 24 2018, 12:01 PM
TSgarethlye
post May 24 2018, 09:46 AM

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QUOTE(fireballs @ May 24 2018, 03:47 AM)
Looks like aircond blower motor. As shown in the diagram, capacitor is across red and blue

For aircond usually have prewired for capacitor. Just replace the capacitor will do. Probably around rm10
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Hi, yeah it's an Aircon blower motor but I am not using it in the Aircon unit so I would need a capacitor, this is for a DIY project smile.gif

Any idea how to wire it if I had to wire the capacitor myself?
TSgarethlye
post May 24 2018, 12:04 PM

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QUOTE(jagged @ May 24 2018, 09:53 AM)
Can you snap a pic of the motor terminals...
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Updated with a pic of the wiring from the motor.


QUOTE(fireballs @ May 24 2018, 10:49 AM)
the capacitor... just wire it in parallel to motor red and blue wire, according to the drawing.

the capacitor terminal, is usually across (left and right, label facing you) with no polarity.
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Is there a diagram or something I could follow? I'm not entirely sure what you mean sad.gif


QUOTE(Zot @ May 24 2018, 11:06 AM)
I think you understand where to connect the capacitor. The problem is the capacitor has 4 terminals, right?

Two pins are closed to each other and the close pairs are separated far from each other. The close pair has same polarity.

Opps ... I need to ask one thing before going further. Why did you buy a 4 terminals capacitor instead of two? Is it the same as the original? I think it is not, right?

Not sure if your capacitor is polarized or not. You can verify if it has + or - sign. So, if there is non, it is safe to assume that they are non-polarized. Polarized capacitor can replace both polarized and non-polarized capacitor. Non-polarized capacitor can only be replaced by non-polarized capacitor unless you know if the voltage polarity will not change.

Here is how your capacitor connections are:

[attachmentid=9819378]

In your case you will just use 2 terminal. Connect just one terminal on each pair and use the side. However, I believe if you connect to the opposite side, it will work just fine.
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There is no + -, Im pretty sure this is a non-polarised capacitor.
This was the capacitor that the hardware shop told me is compatible with this motor. sweat.gif
TSgarethlye
post May 24 2018, 12:24 PM

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QUOTE(Zot @ May 24 2018, 12:16 PM)
So, the capacitor diagram is still correct. Just ignore +ve and -ve sign. Just oluig in the Blue and Red wires to the terminals
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Sorry to be demanding sweat.gif
Could you tell me which wire goes where for each wire?
TSgarethlye
post May 24 2018, 12:48 PM

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QUOTE(Zot @ May 24 2018, 12:36 PM)
Since no polarity, just plug in Blue wire to one capacitor terminal and the Red wire to opposite terminal.

If you look at the capacitor picture, just use terminal facing the screen on the left and on the right. If you want to use the terminal at the back, just use both terminal at the back on the left and the right. The blue and Red wire connect to either side are fine since the capacitor is non-polarized.
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QUOTE(jagged @ May 24 2018, 12:41 PM)
Red/blue to the capacitor & the rest to the ac motor...
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Assuming I only need to wire red, blue, and black(for the speed).
If red goes to one side of the capacitor, and blue goes to the other,
Where does the black, live and neural wire go to?
TSgarethlye
post May 24 2018, 01:27 PM

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QUOTE(Zot @ May 24 2018, 01:10 PM)
Looking at the diagram, Black and Blue is AC. However, in this case the Black, Brown and Orange go to switch. The connected to Black, High speed. When AC is connected to Brown, Medium speed and the last one Low speed.

How was the wire originally? How do you dismantle in the first place? Just close your eyes and pull all wires on one go?  laugh.gif
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Brown Black Orange was in a connector of its own. Since it's supposed to goto an aircond, I removed it because I need to use it without an aircond.
I just want it to run on highest speed, so has to be just black alone yeh?

QUOTE(Zot @ May 24 2018, 01:14 PM)
The Blue wire only one? Maybe it is split somewhere. The picture shows with connector that sure go to capacitor
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There is only one blue wire, that's why i have a capacitor with me rclxms.gif
TSgarethlye
post May 24 2018, 02:36 PM

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QUOTE(Zot @ May 24 2018, 02:08 PM)
You see that on Blue wire got crooked symbol there? That is for thermal fuse as far as I know. So the AC supply go between Blue and Black (H - for HIgh Speed I think).

The air-con must have other wire connected to the Blue. You can connect the the AC to the capacitor next to the terminal with Blue wire.

If I do not hear anything from you, it means an explosion took place  laugh.gif
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Good grief, So scary man your advice yawn.gif


QUOTE(jagged @ May 24 2018, 02:21 PM)
Live goes to Blue, Neutral to Red & the capacitor goes in between Blue & Red. As for the speed (Black) connect it to the motor..
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Black(for speed) is FROM the motor, do I hook it up to the live side of the capacitor or the neural side of the motor?
Also I thought red was the live? Sure live wire goes to blue? shakehead.gif
TSgarethlye
post May 24 2018, 03:38 PM

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QUOTE(jagged @ May 24 2018, 02:47 PM)
Black goes to the speed selector section of your circuit, DON'T hook it up to Blue/Red. It can go both side since its AC supply, there no polarity, same goes to your HP charger/blender.
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QUOTE(Zot @ May 24 2018, 03:04 PM)
I see many people say Black goes to AC but never mentioned where is the other wire  laugh.gif  laugh.gif  laugh.gif

I'm positive it is Blue but what are you trying to do here? At first, I thought you were trying to fix faulty ceiling fan. Now that I know the motor is from air-con blower. Want to use blower somewhere else?.

I think the other AC wire is connected to the Blue wire through the air-con unit.

Connect AC between Blue and Black > High
Connect AC between Blue and Brown > Medium
Connect AC between Blue and Orange > Low
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One say don't hook up black to the blue/red, another says hook up to blue? hmm.gif
Still not entirely sure whether I should connect the black or not.
I've watched this video, which makes it seem like the black wire has to be connected to something to achieve full speed
https://www.youtube.com/watch?v=oyppEsC7n5s...OdAlkhOYTE&t=0s

I harvested it from an indoor aircond unit that it about to be recycled. I want to use this for a project. I basically need it to go on one speed only without much controlling, ideal use would be "flip a switch it runs, flip it again and it goes off" kinda thing.
TSgarethlye
post May 24 2018, 04:17 PM

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QUOTE(Zot @ May 24 2018, 04:02 PM)
Let me explains the diagram on the motor from my understanding:

[attachmentid=9821539]

Normally Black is hot wire, which means Live. The Blue wire is Neutral. The symbol on Blue wire is thermal switch to protect motor winding from damage in case of overload, like fan blade stuck but motor is trying to rotate it.

So, the speed control is by connecting the L wire to Black, Brown and Orange for H, M and L speed respectively.

However, I'm not sure the wires picture. All those wires go into motor casing? If is does, then you have no wire to connect to Neutral. So, according to the diagram, you need a wire from the capacitor (Blue) to N. You can do this by having another connector to plug into the terminal next to the Blue wire terminal. It is the same connection wired inside the capacitor. Why two pair of terminals in this capacitor? It is different story which I can explain other time. This is called running capacitor. Without it, the fan probably not running efficiently and at irregular speed.

You can try. Nothing will blow. The capacitor is 450Vac rated anyway. It is way over the 240/250 Vac.
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Yes the image of wires are all from the motor itself.
Okay so you're saying that LIVE wire should connect to black and NEUTRAL wire to blue.
I'm not entirely sure about what you said about the wiring for the capacitor.
Do we ignore the red wire entirely?

TSgarethlye
post May 24 2018, 04:26 PM

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QUOTE(jagged @ May 24 2018, 04:18 PM)
L, M & H stands for Low, Medium & High.. so it goes to the speed selector on the... whats it for anyway..?
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A DIY project where this motor will be pulling something haha

QUOTE(jagged @ May 24 2018, 04:22 PM)
If you connect L or N to Blue and N or L anything to L, M & H.. you will short your input, its just a coil (winding the wire into a coil) so there will be 0 resistance...
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Ikr, that's why electricity is so scary.
Don't want to blow my fuse box or the motor rclxub.gif
TSgarethlye
post May 24 2018, 04:40 PM

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Deleted.

This post has been edited by garethlye: May 24 2018, 08:35 PM
TSgarethlye
post May 24 2018, 08:36 PM

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QUOTE(COOLPINK @ May 24 2018, 03:48 PM)
u should connect the black to one of the wires as it is the setting for the highest speed.
question is red or blue.  hmm.gif

i would say it is red. but again dun take my word for it.
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QUOTE(jagged @ May 24 2018, 04:22 PM)
If you connect L or N to Blue and N or L anything to L, M & H.. you will short your input, its just a coil (winding the wire into a coil) so there will be 0 resistance...
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QUOTE(Zot @ May 24 2018, 04:30 PM)
The Red wire is to the capacitor and nothing else.

Remember my capacitor drawing with +ve and -ve notation. Ignore that notation since it is non-polarized. The drawing shows that the terminal close to each other is internally connected inside the capacitor
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Alright, so i've crudely drawn out a little map. Where would each wire go? Really appreciate the help guys rclxms.gif rclxms.gif rclxms.gif



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TSgarethlye
post May 25 2018, 11:26 AM

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QUOTE(Zot @ May 25 2018, 08:22 AM)
This should be the wiring from my understanding.

[attachmentid=9822787]

I believe this should work. Don't worry, it will not explode  laugh.gif , but prepare to switch off if anything unexpected happened. Just for precaution.  tongue.gif

I re-read your thread. You were saying that this is for your project to pull something. I think the fan motor does not have enough torque to do this kind of job.
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Ah-ha. I will try that later tonight and see if it works or will my house burn down. Lolol

I did come across another youtube video of something explaining(In a language I do not understand) wiring up a motor with a capacitor.
Does it seem similar to your diagram? hmm.gif hmm.gif

https://www.youtube.com/watch?v=4t55ptNJIYk...E&index=13&t=0s
TSgarethlye
post May 25 2018, 12:42 PM

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QUOTE(Zot @ May 25 2018, 12:03 PM)
Seems similar except for wire color. The problem is the wire color is for internal wiring is not the same. Even within same company  rclxub.gif

Looks like the the video is using the US color coding because N is white.

This is good site for reference:

https://www.allaboutcircuits.com/textbook/r...ng-color-codes/

There are many Hindi youtube video. You just need to watch Kuch Kuch Hota Hai  laugh.gif
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QUOTE(COOLPINK @ May 25 2018, 12:05 PM)
agree on this.
if buy from china some of them dun even follow standard wire color code.
i hate guessing and is lazy to back trace the wiring. mad.gif
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So we're all in agreement for Zot's diagram yeah?
Ill test it tonight and let you guys know biggrin.gif
Much love guys. wub.gif
TSgarethlye
post May 26 2018, 10:21 AM

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It workkssssss! Ahhhhh!
Thanks a huge bunch guys!
Wish I could upvote you guys like in Reddit xD

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