The Type A electrical plug (or flat blade attachment plug) is an un-grounded plug with two flat parallel pins. Japanese and American plugs are similar in appearance, but the neutral pin on the American plug is wider than the live pin. Some Japanese plugs can be used in the United States, but US plugs will not work in Japan.

The pins on Type A and Type B plugs have a hole near the tip that fits into ‘bumps’ found on the contact wipers of certain sockets, the pins are gripped more tightly allowing for better contact and to prevent the plug from slipping out of the socket. Certain sockets have spring-action blades that grip the sides of the pins which make the holes obsolete.

Latin American and Caribbean countries that use Type A Plugs:
Anguilla
Antigua and Barbuda
Aruba
Bahamas
Barbados
Bermuda
Bolivia
British Virgin Islands
Cayman Islands
Colombia
Costa Rica
Cuba
Dominican Republic
Ecuador
El Salvador
Guatemala
Guyana
Haiti
Honduras
Jamaica
Mexico
Nicaragua
Panama
Peru
Saint Kitts and Nevis
Saint Vincent and the Grenadines
Trinidad and Tobago
Turks and Caicos Island
United States Virgin Island
Venezuela