Hello Facebook friends and family. One of my Poplarville customers had this pos running her 15000 watt electric central heat. The size is 12 gauge. Electrical code says the minimum size is #4 backed by one 60amp breaker with jumpers to one 30amp breaker for this application. My customer almost lost her house and life. As it is an idiot's stupidity took down half of Poplarville's power grid for several hours. Please ya'll don't let your dumbass ignorant brother-in-law install or repair any appliance in your home. Is a couple hundred dollars worth your home or your and your family's lives? Please ya'll find somebody who is knowledgeable, educated, licensed, bonded, HONEST, and experienced. Don't go for the guy who can talk the talk but can't walk the walk either. If your lazy neer-do-well nephew claims years of experience, but you can only verify 3 months with Jo-Jo's AC then find someone else. What are my qualifications you ask? I have an AS from Phoenix university online in HVAC-R technology , an EPA license, and 13 years experience [7 of them running this company]. I am factory authorized warranty technician for 4 appliance manufacturers and 7 2nd year warranty companies My insurance company is my own business and nobody questions my integrity and keeps his teeth but my old lady. 601-310-4220