ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Recent Posts
Happy Father's Day!
by Bill Addiss - 06/19/21 04:16 PM
A Risky Setup
by timmp - 06/18/21 08:08 PM
Where is Everyone?
by gfretwell - 06/18/21 11:07 AM
Conduit over Vinyl Siding
by Jim M - 06/16/21 08:30 PM
Updated Forum Software
by Admin - 06/15/21 10:23 AM
New in the Gallery:
2020 - 2021 Winter Project
2020 - 2021 Winter Project
by Bill Addiss, April 29
Garden 2021
Garden 2021
by Bill Addiss, April 26
Who's Online Now
0 members (), 2 guests, and 14 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
#37382 04/27/04 02:14 AM
Joined: Jan 2004
Posts: 91
rizer Offline OP
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).]

#37383 04/27/04 02:40 AM
Joined: Mar 2001
Posts: 333
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
Joined: Jul 2002
Posts: 680
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
Joined: Dec 2001
Posts: 300
rotation is looking at the shaft end unless otherwie noted. I've never seen it otherwise noted.

#37386 04/27/04 07:22 PM
Joined: Feb 2003
Posts: 939
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
Joined: Jan 2004
Posts: 91
rizer Offline OP
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
Joined: Apr 2002
Posts: 2,527
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
Joined: Dec 2003
Posts: 524
...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
Joined: Jan 2004
Posts: 91
rizer Offline OP
thanks guys I think that about covers it! I appreciate it.

Link Copied to Clipboard

Tools for Electricians
Tools for Electricians

* * * * * * *

2020 Master Electrician Exam Preparation Combos
2020 NEC Electrician
Exam Prep Combos:
Master / Journeyman


Member Spotlight
Kansas City, KS
Posts: 30
Joined: January 2013
Top Posters(30 Days)
Admin 10
Trumpy 10
Popular Topics(Views)
280,439 Are you busy
213,522 Re: Forum
200,401 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5