In the United States of America the standard voltage is 120 V and the frequency is 60 Hz. You can use your electric appliances in the United States of America, if the standard voltage in your country is in between 110 – 127 V (as is in the US, Canada and most South American countries).Click to see full answer. In respect to this, is US 110 or 220?In most of the world, household outlet voltage is 220 volts. In the United States and neighboring countries, however, household outlets run at 110 or 120 volts. This can pose a serious problem for travelers. Connecting a 220 volt appliance to a 110 volt outlet can damage or destroy the appliance.Secondly, what voltage is too high for homes? If you find that the voltage at your wall outlets is consistently around 124 VAC or higher, then you have too much electricity in your house and you are using and paying for significantly more energy than your appliances need. what is residential voltage? These days, almost every residential customer can get 120 volts from their wall outlet. However, power is typically delivered into your home at a nominal voltage of 240 volts. We talked briefly about the 240 volts that is supplied to your home from the power company.What happens if you plug 220v into 110v?If you plug a 220V device into 110V outlet, it will normally last a little longer before it dies. But: An AC mechanical drive may fail to start, or it may take up more current than it is designed for, and eventually burn out. The insulation is usually not a problem unless there is a major flaw in the design.