ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
Strobing LEDs
by Bill Addiss - 10/06/22 07:33 PM
How's Florida doing with Hurricane Ian?
by Bill Addiss - 09/28/22 12:41 PM
Tough being a lineman's kid
by Bill Addiss - 09/28/22 12:39 PM
GFCI's pops in large numbers
by dsk - 09/26/22 04:35 AM
AFCI’s Revisited
by sparky - 09/24/22 09:58 AM
New in the Gallery:
240/208 to a house
240/208 to a house
by wa2ise, October 9
Now you know.
Now you know.
by Tom_Horne, September 7
Who's Online Now
0 members (), 26 guests, and 9 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
R
rizer Offline OP
Member
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
S
Member
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.


steve


Steve
#37384 04/27/04 06:37 PM
Joined: Jul 2002
Posts: 680
W
Member
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
M
Member
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
F
Member
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
R
rizer Offline OP
Member
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
B
Moderator
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
Member
...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]
Russ


.."if it ain't fixed,don't break it...call a Licensed Electrician"
#37390 04/28/04 05:00 AM
Joined: Jan 2004
Posts: 91
R
rizer Offline OP
Member
thanks guys I think that about covers it! I appreciate it.


Link Copied to Clipboard
Featured:

Tools for Electricians
Tools for Electricians
 

* * * * * * *
2023 National Electrical Code (NEC)
2023 NEC Now Available!
 
* * * * * * *

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

 

Member Spotlight
Grover
Grover
Sebago, ME, USA
Posts: 109
Joined: January 2005
Top Posters(30 Days)
dsk 3
Popular Topics(Views)
297,818 Are you busy
228,536 Re: Forum
213,363 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5