110v vs 220v plug. Because a 220 outlet has to accommodate an extra hot wire and the wires are thicker it has to be larger than a 110 outlet. You asked what the difference is between 110 and 220 volts but i think what you really want to know is why a home is typically supplied with two difference voltages. 220v hot tubs which is better lets clear the water on the mysteries surrounding 110 volt and 220 volt hot tubs so you can make an educated decision on which hot tub is the better option for your hot tub buying dollar. 220v 230v or 240v tubs are hard wired from the home main circuit breaker box to a safety cut off box located near the hot tub and then directly into the spa control box.
Most 110v outlets can survive 220v across them and are sometimes expected to in normal operation ie. 120v is the ac voltage on a single hot wire in your home with respect to neutral or ground. 110v 115v 120v 220v 230v 240v. If the resistance stay the same the consumed power with 110v applied will be exact.
Theres a big difference in 110v vs. For those appliances that need more power 220v outlets are installed. Its usually round and black and has three or four slots that are arranged differently than the slots on a 110v outlet. How much power work you can get from an outlet is limited by two things.
If we are talking about incandescent light bulb it will lit with about 25 of its capacity. The power equals the voltage on power of two divided by the resistance. 110v 115v or 120v hot tubs are often called plug and play because most can be plugged into a standard 15 amp electrical outlet. When the two outlets are on opposite legs of a multi wire or edison branch circuit and certainly a 220v outlet will survive having a paltry 110v across it but they are configured differently to keep dunderheads from plugging the wrong thing into the wrong outlet and having it fry due to.
Youll often hear voltages in your home referred to as 110v 115v or 120v. 110v is typically the amount of current the wire can handle before it becomes unsafe and the amount of voltage supplied to the outlet. 220v is very simply put 2.