A/C and Arizona Heat Wave
I am having AC and voltage related issues which have showed up with high temperatures. 118 yesterday, same for today, and who knows for how long. I started having cooling issues with the heat. My Mach...
Forum Discussion
copper wire resistance increase 0.4 percent per degree C. so going from 20C, roughly room temperature, to 40C, 110F, the resistance of the wire will go up by 8 percent. add to that any temp increase due to resistance heating from the load. that change in temp could be enough to get you past the point of no return.
Next, assuming the wire you have is ALL #10, and the lengths you give, with a 15A load, only the AC running I calculate a 9V drop at 20C, at 110F, the drop goes up by about a volt. so your drop from 121 to 108 is in the ballpark, especially if any of the wire is #12.
Next, assuming the wire you have is ALL #10, and the lengths you give, with a 15A load, only the AC running I calculate a 9V drop at 20C, at 110F, the drop goes up by about a volt. so your drop from 121 to 108 is in the ballpark, especially if any of the wire is #12.
