Now wait until his does the dryer and finds out (in the USA) that there are several different types of plugs and sockets and plug on your dryer might not match the socket on the wall. (source: recent experience)
There are two plugs that are in common usage for electric dryers (in the USA): a 3-wire (typically gray, with a "flat" cord) or the 4-wire (typically black, with a round cord). Older installs will probably have the 3-wire, while anything somewhat recent will likely have the 4-wire. They connect to the dryer slightly differently, but there should be a diagram to show how.
This is the same situation with electric ranges, except the plugs are slightly different from the dryer plugs so you can't just use a dryer plug on a range.
