How to Tell the Difference Between 110V and 220V | Hunker
A 220-volt breaker is known as a double-pole breaker, and it consists of two 110-volt breakers bonded together. The Difference Between a 110 and a 220 Outlet. Virtually all 110 volt outlets look the same. They have two vertical slots placed side by side, one of which may be larger than the other if the outlet is polarized. There may also be a ...