Some furnaces use electricity for glass melting. Low voltage and high amperage power is passed through the molten glass through 2 molybednum electrodes dipped into the glass. The molten glass acts as a resistor (when current passes from electrode to another) and heat is generated which heats up the glass to the required temperature. A scott transformer and a thyristor control panel is used to control the power to the electrodes. I am trying to replicate this process in my glass melting furnace.I have little electrical knowledge. My question is 1. Why does this (glass) heating process have a requirement of low voltage and high amps. Although I am not sure but some users have suggested that a 9kVA load would be running at 60 volts and 150 amps.