ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
LED retrofit flickers
by rmiell. 01/18/19 08:49 PM
Israel
by Texas_Ranger. 01/14/19 07:12 AM
Free Code class in Maryland 1/16/2019
by Admin. 01/12/19 05:43 PM
Calling all Non-US members!! (Non-US only)
by RODALCO. 01/12/19 02:37 AM
sec cable code conflict
by jake2018. 01/11/19 07:36 PM
New in the Gallery:
What is this for?
Plug terminals
Who's Online Now
0 registered members (), 7 guests, and 15 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Mixing voltages in the same raceway #77799
07/11/01 07:52 PM
07/11/01 07:52 PM
C
chrispatti  Offline OP
Junior Member
Joined: Jul 2001
Posts: 6
Deltona,Fla. United States
What is the code requirement for combining two different voltages in the same conduit? I have a three phase 480volt compressor unit and a 120volt receptacle to feed at the same location, and I only have one conduit for a homerun. All the conductors in the conduit have the same insulation-THHN. Is this a safe and legal way to install these circuits?

2017 / 2014 NEC & Related Books and Study Guides
Re: Mixing voltages in the same raceway #77800
07/11/01 08:31 PM
07/11/01 08:31 PM
electure  Offline

Member
Joined: Dec 2000
Posts: 4,278
Fullerton, CA USA
Hi,& Welcome!
Yes, I don't like it much, but try NEC 300-3 (c).
Legal, yes.
Safe, probably.
Sound engineering, ??


[This message has been edited by electure (edited 07-11-2001).]

Re: Mixing voltages in the same raceway #77801
07/11/01 08:45 PM
07/11/01 08:45 PM
C
chrispatti  Offline OP
Junior Member
Joined: Jul 2001
Posts: 6
Deltona,Fla. United States
Well thank you for that information. I guess it's just a question of money. Does the contractor pay for two 100ft. runs of EMT or just use one. Me myself I have never combined two different voltages in the same conduit or box for that matter. This is a job that I have just walked on to on Monday.So all the pipework was already done. But thanks again for that code article I will look it up now for future reference.


Featured:

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

 

Member Spotlight
Joe Tedesco
Joe Tedesco
Boston, Massachusetts USA
Posts: 2,749
Joined: October 2000
Show All Member Profiles 
Top Posters(30 Days)
Trumpy 4
BigB 3
Popular Topics(Views)
252,790 Are you busy
189,600 Re: Forum
179,264 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.016s Queries: 14 (0.004s) Memory: 0.9511 MB (Peak: 1.0761 MB) Zlib enabled. Server Time: 2019-01-21 18:02:33 UTC