so i'm in the works of building a Heat treat oven and looking to get supplies to make coils, trying to run the numbers for coils and am really failing at understanding how it all works together. i'm pretty handy with everything but electrical so need some guidance. i can get 20 gauge wire in 50 foot length so i will be running with that. So this is what i know or have, will be running 120volts on a 20 amp breaker. Inside oven dimensions will be 4.5" x 4.5" x 15" 2 x 50 foot rolls of 20 gauge wire Not majorly concerned about heating up super fast, i can run 1/2/3 coils. Have PID and 40amp SSR on the way I've looked at dcknives spread sheet and tried to make sense of the numbers to work with my application but i just don't understand what it's telling me. below is a copy paste of what i got. INPUT VOLTAGE 120 V DESIRED WATTAGE 3000 W NUMBER OF ELEMENTS 2 QTY 1 or 2 elements only AMPERES (DO NOT EDIT) 25 A OHMS (DO NOT EDIT) 9.6 Ohms COIL DIAMETER 0.375 inches Length of wire 20 AWG 11.75 length per coil turn 0.98 in Turns per inch 31.25 turns Turns per foot 375.00 Wire per foot of element 30.53 ft Coil length 0.385 ft 4.62 inches Stretched coil length 0.770 ft 9.24 inches If i'm reading this right i need 11.75 Ft per coil which i will be running x 2, i will turn them around a 3/8" shaft, i need 31.25 turns per inch for 4.62 inchs = 144.375 turns total each element. each element will be 9.24 inch when stretched out. The above is all fine and well but when i compare to a other gauge wire in the same spread sheet it seems pretty short, What am i missing here?