Can you plug 110V appliance in a 100V outlet?

A previous member answered:

"No. You will need a step up transformer to be able to use 110v appliances in 100v sockets."

This is incorrect. In the US, the AC supplied to household outlets may be called 100, 110, 0r 120 Volts. These all refer to the U.S. nominal 110 Volt supply, which can range from as low as 95 volts and as high as 125 volts and most appliances labeled for 110 Volts may be used in the socket. Generally, if the plug fits, it's safe.