ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Recent Posts
VFD MotorFeeders
by gfretwell. 10/19/17 01:02 AM
Generator Cable Sizing
by brsele. 10/18/17 07:39 PM
What do you do?
by gfretwell. 10/17/17 01:08 AM
Good ol' copper pipe in the fuse holder trick
by HotLine1. 10/16/17 07:16 PM
Another generator question
by HotLine1. 10/16/17 07:02 PM
New in the Gallery:
Gallery Test
Popular Topics(Views)
241,426 Are you busy
177,396 Re: Forum
168,995 Need opinion
Who's Online Now
0 registered members (), 17 guests, and 7 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#99512 - 05/27/06 12:59 AM liquidtight  
victor  Offline
Junior Member
Joined: May 2006
Posts: 3
Las Vegas
Hi I would like to know where in the NEC talks about using liquidtight conduit to connect a dry type transformer because fo vibration. Thank you


2017 / 2014 NEC & Related Books and Study Guides

#99513 - 05/27/06 07:41 AM Re: liquidtight  
iwire  Offline
Moderator
Joined: Jan 2003
Posts: 4,391
North Attleboro, MA USA
Welcome to the forum victor.

You will not find anything in the NEC requiring liquidtight conduit to be used to connect a dry type transformer because of vibration.

It is just a design choice buy the installer.


Bob Badger
Construction & Maintenance Electrician
Massachusetts

#99514 - 05/27/06 03:03 PM Re: liquidtight  
renosteinke  Offline
Cat Servant
Member
Joined: Jan 2005
Posts: 5,316
Blue Collar Country
I'll go a bit farther...

True, the NEC does not address the matter. However, NECA standards document the use of flex at transformers as "trade practice", or good workmanship.

That aside, I noticed recently that some transformers have internal rubber mounts, so the piping actually does not connect to the part that vibrates.

I still like to see flex at the case, though. Old habits die hard.


#99515 - 05/30/06 10:40 PM Re: liquidtight  
victor  Offline
Junior Member
Joined: May 2006
Posts: 3
Las Vegas
hi thank you for your reply, where can I get a copy of NECA stating the use of liquid flex as a good workmanship. Thank you



Member Spotlight
mersadrad
mersadrad
Montreal, Quebec, Canada
Posts: 28
Joined: March 2011
Show All Member Profiles 
Featured:

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

 

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.012s Queries: 14 (0.003s) Memory: 0.7598 MB (Peak: 0.8899 MB) Zlib enabled. Server Time: 2017-10-21 10:26:39 UTC