Winnie- Your probably accurate but your way over my head with most of that information. My academic background is not that great. Thanks anyway.

Bob- Thanks for the IAEI article reference- I did get an answer to my question -kinda. T.310.16 is telling us that the insulation on various conductors will not be damaged when "x" number amperes are flowing and that the temperature approaches 60, 75 or 90 degrees. No mention of any exact numbers tho, probably due to tolerances.

So we must be talking about a very special application to specify 75 degree wire only. The terminals are more likely to be the week link in the system anyway.

And Greg, Don't put that #12 back on that dryer just in case [Linked Image]

George Little