A:Answer The LG 4.7 cu. ft. Built-In Single Wall Oven, Model # LWS3063ST must be electrically grounded in accordance with local codes or, in their absence, with the National Electrical Code ANSI/NFPA No.70- latest edition. This wall oven must be supplied with the proper voltage and frequency, and connected to an individual, properly grounded branch circuit, protected by a circuit breaker or fuse. The rating plate attached to the unit will show the wattage consumption for this unit and help determine the circuit breaker or fuse required by this model. For a single wall oven that can consume up to 4,100W at 240VAC, a 30 Amp circuit breaker with wire gauge at least #10 AWG must be used. The specification sheet for this model shows that it has a kW rating of 4.1 kW at 240 volts. If you are in need of any assistance, have additional questions, or would just like to see our helpful tips, check us out on Twitter @LGUSSupport Facebook https://www.facebook.com/LGUSA/ or you can give us a call at 800-243-0000. ^CP