ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
LED retrofit flickers
by rmiell. 01/18/19 08:49 PM
Israel
by Texas_Ranger. 01/14/19 07:12 AM
Free Code class in Maryland 1/16/2019
by Admin. 01/12/19 05:43 PM
Calling all Non-US members!! (Non-US only)
by RODALCO. 01/12/19 02:37 AM
sec cable code conflict
by jake2018. 01/11/19 07:36 PM
New in the Gallery:
What is this for?
Plug terminals
Who's Online Now
0 registered members (), 20 guests, and 22 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
temperature ratings #5871
12/12/01 03:49 PM
12/12/01 03:49 PM
D
dom  Offline OP
Junior Member
Joined: Jun 2001
Posts: 8
What does the dual rating listed on circuit breakers mean? (60/75) Is it just indicating a range of wire sizes that will legally fit into the terminal, or is there more to it?
If there is a choice, most people would probably choose to use the 75 deg rating.
thank you

Work Gear for Electricians and the Trades
Re: temperature ratings #5872
12/12/01 11:54 PM
12/12/01 11:54 PM
J
Jim M  Offline
Member
Joined: Aug 2001
Posts: 457
Chestertown, MD, USA
This should indicate that the terminal is listed for use at either temperature ampacity. If the teminal was only listed for use with a 60 degree termination it would affect the wire size you could use to achieve the required ampacity. See Section 310-10 and the associated Tables to see the affect of the different ampacities in the different temperature columms.


Featured:

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

 

Member Spotlight
mxslick
mxslick
Atomic City, ID USA
Posts: 803
Joined: October 2004
Show All Member Profiles 
Top Posters(30 Days)
Trumpy 4
Popular Topics(Views)
252,825 Are you busy
189,618 Re: Forum
179,282 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.037s Queries: 14 (0.021s) Memory: 0.9420 MB (Peak: 1.0587 MB) Zlib enabled. Server Time: 2019-01-23 09:47:06 UTC