A:Answer Hi Jesse- Thanks for choosing our GE® JT3800SHSS! Yes, you must use a single-phase, 120/208 VAC or 120/240 VAC, 60 Hertz electrical system. Most cooking appliances are rated at 240 volt. The nominal voltage is 240 volt, but homes may have 208V, 220V, or 240V power supply. Any appliance that is rated for 240 volts and can also be used on a 220V or 208V outlet. Check out the Installation Instructions online for complete details: http://products.geappliances.com/MarketingObjectRetrieval/Dispatcher?RequestType=PDF&Name=31-11044.pdf - Thanks for checking with us. Enjoy! SUE@GEA