ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals

ECN Shout Chat
Top Posters(30 Days)
Admin 16
Recent Posts
ESA Arc flash course
by TheShockDoctors. 03/24/17 10:15 AM
fuse rejectors
by HotLine1. 03/24/17 07:53 AM
Another Forum Update
by Admin. 03/22/17 03:04 PM
Dining room plugs
by watersparkfalls. 03/21/17 10:31 PM
TRUE POWER
by jraef. 03/21/17 09:13 PM
New in the Gallery:
SE cable question
Popular Topics(Views)
231,340 Are you busy
166,077 Re: Forum
160,541 Need opinion
Who's Online Now
0 registered members (), 82 guests, and 12 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#104881 - 12/08/03 02:55 PM Nothing Lasts Forever! Rust Will Always Be Present!  
Joe Tedesco  Offline
Member
Joined: Oct 2000
Posts: 2,749
Boston, Massachusetts USA
The missing cover can be easily corrected, but the rusty fitting in these runs of metal raceways, that show the affect of dampness and the possible heat from the piping systems used for that purpose leave me with a chill!

The code should call for a separate EGC in the form of a wire sized per Table 250.122 in cases like this one.

I applaud those who are in the design area when they make sure that this is done as a regular method.

[Linked Image]


Joe Tedesco, NEC Consultant

2017 / 2014 NEC & Related Books and Study Guides

#104882 - 12/08/03 09:55 PM Re: Nothing Lasts Forever! Rust Will Always Be Present!  
electricman2  Offline
Member
Joined: Nov 2003
Posts: 269
Thomasville, NC USA
Another example why a eg conductor should always be pulled. The only situation a raceway should be used as the ecg is maybe RMC installed in a dry location with no concentric or eccentric ko's. Even EMT is subject to loose joints because of vibration or poor installation.


John

#104883 - 12/09/03 01:29 AM Re: Nothing Lasts Forever! Rust Will Always Be Present!  
PCBelarge  Offline
Member
Joined: Jun 2003
Posts: 681
Dobbs Ferry, NY, USA
I am in favor of having an equipment grounding conductor pulled... There have been extensive tests performed that show the different raceways to act as an EGC. The fact is in most and I repeat most instances when installed correctly, the raceways will perform as designed. This photo might be an exterior wall, if so where is 300.7(A) SEALING. ? If the proper sealing was installed, this may never have happened.

Pierre


Pierre Belarge


Member Spotlight
renosteinke
renosteinke
Blue Collar Country
Posts: 5,316
Joined: January 2005
Show All Member Profiles 
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.013s Queries: 14 (0.003s) Memory: 0.7500 MB (Peak: 0.8747 MB) Zlib enabled. Server Time: 2017-03-24 20:03:48 UTC