Welcome. Welcome to Cloverdale Elementary School. Motto: I am proud to be a Cloverdale Cowboy, and the future of America. I have respect for myself, others, and property. There is no limit to what I can achieve.
Multiply the price per kilowatt-hour by the number of kilowatt-hours per day your refrigerator consumes. Based on the average California price per kilowatt-hour of 16.4 cents, a unit consuming 2.4 kilowatt-hours per day would cost 39 cents each day to operate.ivide the wattage of your refrigerator by 3. Your refrigerator cycles on and off, and only consumes the maximum wattage about one-third of the time it's plugged in, according to the U.S. Department of Energy. For a typical 300-watt unit, divide by 3 to get 100 watts before attempting to calculate operating costs.
By multiplying 2 Amps x 120 Volts, you find out the refrigerator uses 240 Watts. The batteries will need to deliver 20 Amps to run the refrigerator (240 Watts/12 Volts = 20 Amps). Typically, refrigerators operate about 1/3 of the time (1/3 duty cycle), or 8 hours a day.Therefore, the A.H. drain will be 160 A.H.(8 hours x 20 Amps = 160 A.H.). After the load and running time is established, the battery bank size can be calculated.ypically, refrigerators operate about 1/3 of the time (1/3 duty cycle), or 8 hours a day. Therefore, the A.H. drain will be 160 A.H. (8 hours x 20 Amps = 160 A.H.). After the load and running time is established, the battery bank size can be calculated.