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

>> Home   >> Electrical-Photos   >> Classifieds   >> Subscribe to Newsletter   >> Store  
 

Photo of the Week:

Unsafe Ladder
Is This Safe?

Advertisement:-Left
Recent Gallery Topics:
What in Tarnation?
What in Tarnation?
by timmp, September 10
Plumber meets Electrician
Plumber meets Electrician
by timmp, September 10
Who's Online Now
0 members (), 66 guests, and 23 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
#194159 05/13/10 03:41 PM
Joined: Jan 2004
Posts: 1,507
G
Member
How is Article 310.15.(B)(2)(c) applied in your area? What is used for a base temperature? Can one use the information on the weather channel for your area's average temperature on the hottest month of the year? Do you have to use the ASHRAE Handbook? How about that 3 questions for the price of one smile


George Little
Horizontal Ad
Joined: Jul 2004
Posts: 10,006
Likes: 37
G
Member
I cross posted this over on Fl IAEA to see what they say.

I never had an inspection on a roof since this article appeared.


Greg Fretwell
Joined: Jan 2004
Posts: 1,507
G
Member
Thanks Greg, since I live in a northern state, we don't have much of an issue with this type of installation but I'm sure you might or possibly some other state.


George Little
Joined: Jul 2004
Posts: 10,006
Likes: 37
G
Member
I got this back From Bryan Holland (BHGravity here)
Quote

I am using the guidelines established by the CDA. As indicated in the FPN, the CDA guidelines utilize the average of the 2% ASHRAE design temperatures for each region and major city in the state.

The guildelines and sliding scale card can be obtained FREE from www.copper.org
_________________________
Bryan P. Holland, ICC Electrical Code Official
CBO, Plans Examiner, Inspector, Instructor
Secretary - IAEI Florida Gulf Coast Division
Secretary - BOAF Gulf Coast Chapter






Greg Fretwell
Joined: Jul 2004
Posts: 10,006
Likes: 37
G
Member


Greg Fretwell
Joined: Jun 2004
Posts: 1,273
T
Member
In Las Vegas the local ordinances super-cede this Code provision.

Ground temperatures are considered such a threat that the typical PVC-under-slab run is restricted to absolute minimums and the conductors get derated.

Hence, a grocery store ( example ) has all of its circuits run in EMT overhead and de-rated one bump.



Tesla

Link Copied to Clipboard
Advertisement:-Right


Tools for Electricians
Tools for Electricians
 

* * * * * * *
2023 National Electrical Code (NEC)
2023 NEC + Exam Prep Study Guides Now Available!
 

Member Spotlight
Posts: 362
Joined: April 2003
Top Posters(30 Days)
Popular Topics(Views)
339,638 Are you busy
264,989 Re: Forum
246,232 Need opinion
New Page 2
Powered by UBB.threads™ PHP Forum Software 7.7.5