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#37382 - 04/27/04 02:14 AM cw vs. ccw  
rizer  Offline
Joined: Jan 2004
Posts: 91
bradenton ,fl.,usa
I have been told the way to determine wether a motor is spinning clockwise or counter clockwise is to look at it from the back of the motor ( the opposite side of the output shaft). Is this correct?
I apologize i'm not in the correct section of this forum. I also noticed iI cannot delete it to put it in the "general discussion" section.

[This message has been edited by rizer (edited 04-27-2004).]

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#37383 - 04/27/04 02:40 AM Re: cw vs. ccw  
stamcon  Offline
Joined: Mar 2001
Posts: 329
So San Francisco CA
Rizer, my experience is just the opposite. Look at the end of the shaft for direction(VFSE). If the motor is double shafted, look at the end with the leads(VFLE). Some manufacturers might use the opposite of this, but this is the only way I've seen them.


#37384 - 04/27/04 06:37 PM Re: cw vs. ccw  
walrus  Offline
Joined: Jul 2002
Posts: 680
Bangor Me. USA
The motors I've ordered have been tagged cw or ccw on the shaft end. Its my experience that you look at the shaft from the shaft end to determine rotation. My experience is strickly fractional hp if that makes a difference?

#37385 - 04/27/04 07:18 PM Re: cw vs. ccw  
maintenanceguy  Offline
Joined: Dec 2001
Posts: 300
Southern NJ, USA
rotation is looking at the shaft end unless otherwie noted. I've never seen it otherwise noted.

#37386 - 04/27/04 07:22 PM Re: cw vs. ccw  
frenchelectrican  Offline
Joined: Feb 2003
Posts: 939
Wi/ Paris France { France for ...
shaft end for electric motors otherwise noted or specal installaments.

btw most engines [ gas and diesel engines] are set up by looking at the flywheel arrangement [ most engine run ccw set up but few do run in cw so just like electric motor just watch out that all ]

merci , marc

Pas de problme,il marche n'est-ce pas?"(No problem, it works doesn't it?)

#37387 - 04/27/04 09:44 PM Re: cw vs. ccw  
rizer  Offline
Joined: Jan 2004
Posts: 91
bradenton ,fl.,usa
thanks for the answer and i'm glad i asked. the superintendant and the general formen both said the exact opposite .but, i'd heard different.

#37388 - 04/27/04 11:05 PM Re: cw vs. ccw  
Bjarney  Offline
Joined: Apr 2002
Posts: 2,527
West-Southern Inner-Northeast ...
I believe NEMA Standard MG1 used to define rotation of small- and medium-sized motors and generators as “viewed [ODE] opposite the drive end” but MG1-2002(condensed) seems quiet on the matter. IIRC, NEMA standards never defined a particular rotation for a given phase sequence.

#37389 - 04/27/04 11:21 PM Re: cw vs. ccw  
Attic Rat  Offline
Joined: Dec 2003
Posts: 524
Bergen Co.,N.J. USA
...Rizer, if you're still "fuzzy" about this, call an electrical motor repair shop,..where they do rebuilding,rewinding,servicing, etc,..and ask one of the techs there... [Linked Image] [Linked Image]

.."if it ain't fixed,don't break a Licensed Electrician"

#37390 - 04/28/04 05:00 AM Re: cw vs. ccw  
rizer  Offline
Joined: Jan 2004
Posts: 91
bradenton ,fl.,usa
thanks guys I think that about covers it! I appreciate it.

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