ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat Box
Recent Posts
Do you count seconds?
by Trumpy - 12/12/19 03:49 AM
FPE in Germany
by Trumpy - 12/12/19 03:29 AM
"Esoteric" countries and their wiring practices?
by Texas_Ranger - 12/02/19 10:52 AM
New in the Gallery:
FPE in Germany pt.2
FPE Breaker panel in germany
Who's Online Now
1 registered members (gfretwell), 5 guests, and 9 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
S/O Cable Supplying Industrial Motors #215278 04/03/15 04:53 PM
Joined: Jan 2005
Posts: 91
H
Helectric Offline OP
Member
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
Re: S/O Cable Supplying Industrial Motors [Re: Helectric] #215279 04/03/15 05:08 PM
Joined: Jun 2004
Posts: 1,273
T
Tesla Offline
Member
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 05:09 PM.

Tesla

Featured:

2020 National Electrical Code
2020 National Electrical
Code (NEC)

* * * * * * *

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
sbi
sbi
indiana
Posts: 47
Joined: March 2008
Show All Member Profiles 
Top Posters(30 Days)
andey 2
Trumpy 2
Popular Topics(Views)
261,488 Are you busy
196,668 Re: Forum
185,911 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.3