Hi everyone, Is that true that 110V AC will create more heat in a conduit than a 12V DC would?? -provided that the currents are the same of course. Is there an equation I could use for sizing wires for the 110 VAC /60 hz and also for the 12 VDC automotive application? It has been more than 35 years since I was in electronic school in Hungary back in the 70's. I forgot all the details. Any help would be appreciated. I need an equation for the heat created as well. Thanks!! My understanding is that I can use less wire for more current in the 12 VDC. Am I correct?