i have a study guide with a question i do not understand.
question: what is the total resisitance in a 2-wire circuit, 30 feet in length, utilizing NO. 10 AWG THWN?
the equation they say to use is R=KxL/CM; R=10.4x60/10380=.060ohms.
I don't understand were the 10.4 comes from. The question only explains were the leght comes from and the circular mils.