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Old 05-17-2011, 01:24 PM   #16
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OOPS! C.C.W. rotation and I need C.W.


Walt
Just swap any 2 of the phase wires. Check this information

http://www.industrial-electronics.co...ion-Motor.html

Let me know if it works or burns up.

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Old 05-17-2011, 01:55 PM   #17
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OOPS! C.C.W. rotation and I need C.W.


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Originally Posted by wareagle View Post
Walt
Just swap any 2 of the phase wires. Check this information

http://www.industrial-electronics.co...ion-Motor.html

Let me know if it works or burns up.

That only works for 3 phase motors. This is a single phase motor.
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Old 05-17-2011, 02:12 PM   #18
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OOPS! C.C.W. rotation and I need C.W.


You do realize that this motor is wired for 120 and will draw 18+ amps and probably trip the breaker on start up.
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Old 05-17-2011, 02:15 PM   #19
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OOPS! C.C.W. rotation and I need C.W.


Quote:
Originally Posted by joed View Post
That only works for 3 phase motors. This is a single phase motor.
OP origional post
Quote:
I saw a 3 HP 3,450 rpm motor at Harbor Freight on clearance sale and bought it but it is clock wise rotation and the table saw is set up with counter clock wise.
Did I miss something?
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Old 05-17-2011, 02:51 PM   #20
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OOPS! C.C.W. rotation and I need C.W.


Hi wareagle, yes you missed

So is there anything I can do to change the C.C.W to C.W??

and no it isn't 3 PH wish it was!

from the first post.

Hi 47 47 yes I have 20A breaker feeding the motor and I may elelct to modify the motor to 240 if it does pop the breaker. Motor plate says it is 14A at 120V.

thanks

Walt
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Old 05-17-2011, 02:55 PM   #21
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OOPS! C.C.W. rotation and I need C.W.


My appologies. If guess 3 HP does not mean 3 phase. I missed it twice.
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Old 05-17-2011, 03:01 PM   #22
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OOPS! C.C.W. rotation and I need C.W.


WOW!!! 47 47 you are right. Just re-read the motor plate and it says FLA is 24/12 so I probably will need to run it at 240A.

Hi everyone looks like I will need the answer to reflect the change of direction to a motor running on 240V not the 120V I was thinking I could use.

thanks

Walt
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Old 05-17-2011, 03:09 PM   #23
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OOPS! C.C.W. rotation and I need C.W.


no sweat wareagle, 3 HP as in 3 Horse Power. Thanks to 47 47 I just noticed the FLA (Full Load Amperage) of 24/12 on the name plate and realized I would have to run more than 24 amps to the motor at 120volts otherwise it will pop a breaker. Have to rethink that idea need to go to 240Volts so it drops to 12 amps. I'm sure there is a formula somewhere that any good electrician or engineer would has knowledge of that tells him that 3 HP needs X amps at Y volts. Thank God for name plates. Cause 47 47 knew it soon as he looked at the numbers.

Walt
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Old 05-17-2011, 10:59 PM   #24
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OOPS! C.C.W. rotation and I need C.W.


There is not very often you did snag a true 3 HP motour like that frame size however I did look at the nameplate it is NOT reversable I think it was due interal connection so they are only changeable by voltage only but not the rotation at all.

You may want to check with the place where you got the motour from and see if they can get the correct verison due that nameplate is not reversable.

many time they will listed the rotation typically at the shaft end but few case at fan end. { somecase they will mention which side }

And also with any motour over 2 HP genrally will be wired for 240 volts if possible due the current drawage { unless you got a soft start single phase motour then it can get by with larger one but kinda rare item }

The last largest single phase motor I work on it is 50 HP written pole motour { pretty oddball one but work very well } but for common stock single phase the biggest is typically 15 HP but only twice hit 20 HP { most POCO are not too happy once you get over 10 HP due they say some of the transfomer can not able handle the surge of start up motour }

Merci,
Marc
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Old 05-18-2011, 08:22 AM   #25
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OOPS! C.C.W. rotation and I need C.W.


Hello Marc. Thank You so much for looking into this problem. I bought the motor on clearance "as-is" no returns accepted so I think I am out of luck all the way around. I did get it very cheap price so if I can't use it I will just put it out on a yard sale table or maybe some one reading this post has a need for a very little used C.C.W. rotation 3 HP 1 PH motor?? Make you a good deal!! Anyway, thanks again and I guess I will have to just live with the 1 HP that I did have on the saw that worked OK just sounds like it will eventually burn out from strain of cutting the wood.

My thanks to everyone for their input

Walt
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Old 05-18-2011, 07:08 PM   #26
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OOPS! C.C.W. rotation and I need C.W.


Late entry here, try this;

Post #1 = yel/bla and L1 (incoming power)

Post #3 = ora, whi, red.

Post #4, jumper to post #5. Nothing else is connected to either of these, just a jumper to tie them together. 16 AWG or larger will work, this jumper carries the current of the start winding only when it's engaged. When the motor is running, it carries no current.

Post #6 = yel and L2.

Insulate bro. It isn't connected to anything.

This is based on a somewhat educated guess about how the terminal board is internally connected.

This is the 230 volt connection. When you've got in done, apply 120 volts to L1 & L2. Hot to L1, neutral to L2.

If the connection is correct, and nothing is connected to the shaft, the motor will start and come up to speed, but a bit slower than normal.

Rob
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Old 05-19-2011, 07:44 AM   #27
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OOPS! C.C.W. rotation and I need C.W.


Thanks Micromind, I will certainly give this a try. Seems simple enough thanks to you directions!

Walt

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