I would think you would find a 75C marking for the terminals at each end, or maybe 60/75. That last one can be confusing but I believe it allows you to use it at 75C but doesnt require 75C wire if the current keeps it to 60C. Having wire limited to 60C isnt much of an issue anymore since most is now 90C.
125 amp 208 3 phase panel fed from 100 amp fuses.
- Thread starter steve61
- Start date
- Location
- Wisconsin
- Occupation
- PE (Retired) - Power Systems
I would not be surprised if it has been almost 50 years now, for general equipment other than devices. About the same time THHN became common.
Thanks for the info about the 60 degree terminals. I remember hearing about that but it has been quite a while. Al luck would have it, the one panel that I have on hand has terminals that are not marked with temperature, only the wire size(2/0-#14). I guess I will be buying a different panel.
The difference in wire size and conduit will be worth it.
The difference in wire size and conduit will be worth it.
ptonsparky
Tom
- Occupation
- EC - retired
Isn’t there a label in the panel?
How old is that panel?
- Location
- Wisconsin
- Occupation
- PE (Retired) - Power Systems
You can not use the temperature rating of the lug itself. You must always use the rating of the complete termination/assembly, which means that of the overall equipment.