The GE Truetemp 326B1230P001 oven operates on 220-240 volts. It is designed for use with a standard household electrical supply in regions where 220-240V is the standard voltage for domestic appliances. When installing or servicing the oven, it is crucial to ensure that the electrical supply matches the oven's voltage requirement to avoid damage to the appliance or electrical hazards. If you're uncertain about the voltage supply in your location, it's best to consult a qualified electrician or refer to the oven's user manual for specific voltage requirements and safety guidelines.