ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
Pull out fuse panel?
by gfretwell. 12/17/18 02:33 PM
Video door bell causing chime activation of coil
by gfretwell. 12/16/18 09:01 PM
Conduit fill Calculations
by gfretwell. 12/08/18 08:39 PM
Swimming Pool question
by HotLine1. 12/05/18 12:37 PM
Tingle off the water spigot
by rmiell. 11/30/18 01:03 PM
New in the Gallery:
What is this for?
Plug terminals
Who's Online Now
0 registered members (), 11 guests, and 16 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
20 foot conduit lengths? #80948
06/12/02 07:17 PM
06/12/02 07:17 PM
M
MikeW  Offline OP
Member
Joined: Jun 2002
Posts: 35
Michigan
I recently saw some, installed, ¾” RMC that appeared to be in 20 foot lenghts. [Linked Image] I think it was RMC because it looked like it had an outer galvanized coating. Is this o.k.? I have never seen 20’ lengths of conduit before? What does this forum think?

2017 / 2014 NEC & Related Books and Study Guides
Re: 20 foot conduit lengths? #80949
06/12/02 07:21 PM
06/12/02 07:21 PM
R
Redsy  Offline
Member
Joined: Mar 2001
Posts: 2,056
Bucks County PA
The gym in my daughter's school has MH fixtures hanging from what appear to be 20' lengths of 3/4".
I think it must be plumbing pipe.
I know of no manufacturer of 20' length conduit.

Re: 20 foot conduit lengths? #80950
06/12/02 08:34 PM
06/12/02 08:34 PM
R
resqcapt19  Offline
Member
Joined: Nov 2000
Posts: 2,148
IL
While I don't know of any manufacturer of longer conduit lengths, the code does permit such lengths in 342.130 and 344.130.


Don(resqcapt19)
Re: 20 foot conduit lengths? #80951
06/12/02 09:21 PM
06/12/02 09:21 PM
A
arseegee  Offline
Member
Joined: Jan 2002
Posts: 324
Statesboro, GA USA
What you saw most likely was 20' galvanized pipe which looks like rigid on the outside but has a nasty weld seam on the inside which is perfect for ripping up insulation on your conductors!

Re: 20 foot conduit lengths? #80952
06/12/02 09:32 PM
06/12/02 09:32 PM
B
Bjarney  Offline
Moderator
Joined: Apr 2002
Posts: 2,527
West-Southern Inner-Northeast ...
arseegee-- Isn't galvanized water pipe in 21-foot lengths? The male threads are similar to GRC, but couplings leave a dead-giveaway part of the male thread exposed. Anyone?

Re: 20 foot conduit lengths? #80953
06/12/02 09:46 PM
06/12/02 09:46 PM
B
Bjarney  Offline
Moderator
Joined: Apr 2002
Posts: 2,527
West-Southern Inner-Northeast ...
Oops...it's PVC, but Carlon lists schedule 40 in 20-foot lengths. [And up to 8-inch!!]
http://www.carlon.com/Brochure%20PDFs/2B10%20-%20Conduit,%20Fittings%20and%20Accessories/Carlon%20Rigid%20Nonmetallic%20Utility%20Conduit%20&%20Elbows-2B10-p28-Mar01.pdf


Featured:

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

 

Member Spotlight
HCE727
HCE727
Delaware County, PA, USA
Posts: 186
Joined: November 2005
Show All Member Profiles 
Top Posters(30 Days)
Popular Topics(Views)
252,279 Are you busy
189,226 Re: Forum
178,915 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.026s Queries: 14 (0.005s) Memory: 0.9764 MB (Peak: 1.1237 MB) Zlib enabled. Server Time: 2018-12-18 23:29:03 UTC