ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Potseal 11
Recent Posts
Dimmable LED 2x4 lay in fixtures
by HotLine1. 04/24/17 05:43 PM
Old decora style outlets
by Lostazhell. 04/22/17 07:59 PM
Permit Snafus...AHJs and Contractors Jump in
by gfretwell. 04/22/17 01:11 PM
How do you find a good employee?
by HotLine1. 04/22/17 10:44 AM
Electrode boilers question
by SteveFehr. 04/21/17 08:32 AM
New in the Gallery:
SE cable question
Popular Topics(Views)
234,661 Are you busy
169,369 Re: Forum
162,699 Need opinion
Who's Online Now
0 registered members (), 56 guests, and 8 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#215278 - 04/03/15 05:53 PM S/O Cable Supplying Industrial Motors  
Helectric  Offline
Member
Joined: Jan 2005
Posts: 90
Brandon, SD
Are any of you using type S/O cable to supply fixed electric motors in an industrial setting? I believe that this is allowed under 400.7 Uses Permitted (7) Prevention of the transmission of noise or vibration.

We have several 25 to 125 HP motors that repeatedly rub through the conductor insulation in the flexible conduit near the motor. Am considering replacing the last few feet of conduit and wire to a Type S/O or perhaps even a type W flexible cable.


2017 / 2014 NEC & Related Books and Study Guides

#215279 - 04/03/15 06:08 PM Re: S/O Cable Supplying Industrial Motors [Re: Helectric]  
Tesla  Offline
Member
Joined: Jun 2004
Posts: 1,273
Sacramento, CA
http://www.meltric.com/html/specification-guide.html

Meltric has a scheme dialed in for industrial motors.

Though not well shown in Meltric's photos, their device is obviously suitable for strain relief modification/ enhancement.

Other NEMA players have directly competing products -- and all should be examined.

Hubbell makes a slew of Kellums style strain reliefs -- suitable for SO cord -- and much more.

Strain relief can be added on to Sealtite whips, too.

Additional possibilities:

Use Sealtite angled fittings -- angled at 45 degrees, that is.

These can kick the passage of a whip clear of trouble -- where a straight or 90 did not.


Last edited by Tesla; 04/03/15 06:09 PM.

Tesla


Member Spotlight
HotLine1
HotLine1
Brick, NJ USA
Posts: 6,809
Joined: April 2002
Show All Member Profiles 
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.009s Queries: 15 (0.002s) Memory: 0.7448 MB (Peak: 0.8646 MB) Zlib enabled. Server Time: 2017-04-25 02:50:33 UTC