I need to determine the approximate wire size used in a space heating element (my ancient heat pump). I estimate the length of the coiled element to be approximately 35 inches. The coil is U-shaped with a spacing of 5 inches. The input voltage/current is 240VAC at 50 Amps. The cold resistance is between 10 and 11 ohms on the 3 elements still intact. My best SWAG is #26 but I could be way off base.
Yup, I know I could take the elements out and measure everything, but that would be WAY too easy. Hopefully one of the HVAC experts out there can provide some input??