Is 220v more dangerous than 110v?But before you elevate 220V over 110V, you need to realize that 220V is more dangerous than 110V. 220V delivers a higher current which is more likely to kill you than 110V systems. As far as the average electrician is concerned, 110V is safer to work with than 220V. Most homes in the US rely on 110V.. What is 220v used for?220-volt outlets are the most powerful plugs that you’ll find in most residential homes around the United States. These plugs are meant for ovens, dryers and other high-powered appliances that you simply can’t power with a standard 110V outlet.. What is the difference between 110v and 220v?When comparing 110-volt with 220-volt circuits, you have to keep in mind that they both essentially do the same thing. That is, they carry the voltage to power electrical outlets. The equation is as follows: Power = Voltage x Current, with current measured in amps. When 220v wiring is used, less current is required than with 110v wiring.. What is the cost of adding a 220V outlet to your home?Determining the overall cost of adding a 220V outlet to your home is difficult to do and depends on a bunch of factors. A short run might be done for as little as $400, while the long run might cost you closer to $1]