ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
Fujifilm Recalls Power Adapter Wall Plugs
by Admin. 01/16/18 07:04 PM
VDE 0100 to introduce AFCIs
by sparky. 01/16/18 06:36 PM
Air Compressor feeder conductor sizing
by Potseal. 01/15/18 09:08 PM
Under carpet cable?
by HotLine1. 01/15/18 09:57 AM
New in the Gallery:
Housebilding DIY wiring
SE cable question
Who's Online Now
0 registered members (), 19 guests, and 6 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: 4,263
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
Scott35
Scott35
Anaheim, CA. USA
Posts: 2,708
Joined: October 2000
Show All Member Profiles 
Top Posters(30 Days)
sparky 23
Admin 19
Potseal 13
Popular Topics(Views)
243,514 Are you busy
180,311 Re: Forum
170,804 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.015s Queries: 14 (0.003s) Memory: 0.9495 MB (Peak: 1.0742 MB) Zlib enabled. Server Time: 2018-01-17 01:14:10 UTC