What happens if you plug a 220 volt appliance into a 230 volt outlet?

Answer 1

Nothing drastic happens, the appliance will operate as normal. The voltages 220 to 240 volts are a nominal figure in the same voltage range. It is brought about by the power company, as they have a responsibility to keep voltages within a certain 10% range. The load will only notice a difference of 1% on the load current. e.g. Wattage load of 2400. Amps = watts/volts. 2400/230V = 10.4 amps. 2400/220V = 10.9 amps. On a constant resistance as the voltage goes lower, the current goes higher and vise versa as the voltage goes higher, the current goes lower.