Tato elektrická zásuvka je rozšířena v: Severní a Střední Amerika, Japonsko
Elektrická zástrčka typ B (American standard NEMA 5-15) má dva ploché rovnoběžné kolíky 1,5 mm silné o délce 15,9 – 18,3 mm a šířce 6,3 mm, rozteč je 12,7 mm a kulatý zemnící kolík. Zemnící kolík je o 3,2 mm delší než ty dva ploché, takže zařízení je uzemněno před tím než do něho začne proudit proud. Mezi americkou a japonskou verzí jsou jen nepatrné rozdíly, stejně jako u zástrček typu A.
Zástrčka typu B se používá pro odběry do 15 ampérů.
Používáno:
| American Samoa | 120V 60Hz | Power socket: Type A, Type B, Type F, Type I |
| Antigua and Barbuda | 230V 60Hz | Power socket: Type A, Type B |
| Aruba | 127V 60Hz | Power socket: Type A, Type B,Type F |
| Bahamas | 120V 60Hz | Power socket: Type A, Type B |
| Barbados | 115V 50Hz | Power socket: Type A, Type B |
| Belize | 110V 220V 60Hz | Power socket: Type A, Type B,Type G |
| Bermuda | 120V 60Hz | Power socket: Type A,Type B |
| BritishVirgin Islands | 110V 60Hz | Power socket: Type A, Type B |
| Canada | 120V 60Hz | Power socket: Type A, Type B |
| Cayman Islands | 120V 60Hz | Power socket: Type A, Type B |
| Colombia | 110V 60Hz | Power socket: Type A, Type B |
| Costa Rica | 120V 60Hz | Power socket: Type A, Type B |
| Cuba | 110V 60Hz | Power socket: Type A, Type B |
| Dominican Republic | 110V 60Hz | Power socket: Type A, Type B |
| Ecuador | 120V 60Hz | Power socket: Type A, Type B |
| El Salvador | 115V 60Hz | Power socket: Type A, Type B |
| Guam | 110V 60Hz | Power socket: Type A, Type B |
| Guatemala | 120V 60Hz | Power socket: Type A, Type B |
| Guyana | 240V 60Hz | Power socket: Type A, Type B, Type D,Type G |
| Haiti | 110V 60Hz | Power socket: Type A, Type B |
| Honduras | 110V 60Hz | Power socket: Type A, Type B |
| Jamaica | 110V 50Hz | Power socket: Type A, Type B |
| Japan | 100V 50Hz | Power socket: Type A, Type B |
| Jordan | 230V 50Hz | Power socket: Type B,Type C,Type D,Type F,Type G, Type J |
| Lao People's Democratic Republic | 230V 50Hz | Power socket: Type A,Type B,Type C,Type E,Type F |
| Lebanon | 220V 50Hz | Power socket:Type A,Type B,Type C,Type D, Type G |
| Liberia | 120V 220V 50Hz, 60Hz | Power socket: Type A,Type B,Type C,Type E,Type F |
| Mexico | 127V 60Hz | Power socket: Type A, Type B |
| Micronesia, Federated States | 120V 60Hz | Power socket: Type A, Type B |
| Montserrat | 230V 60Hz | Power socket: Type A, Type B |
| Netherlands Antilles | 127V 220V 50Hz | Power socket: Type A,Type B,Type C,Type F |
| Nicaragua | 120V 60Hz | Power socket: Type A, Type B |
| Niger | 220V 50Hz | Power socket: Type A,Type B,Type C,Type D,Type E,Type F |
| Palau | 120V 60Hz | Power socket: Type A, Type B |
| Panama | 110V 60Hz | Power socket: Type A, Type B |
| Peru | 220V 60Hz | Power socket: Type A,Type B,Type C |
| Philippines | 220V 60Hz | Power socket: Type A,Type B,Type C |
| Puerto Rico | 120V 60Hz | Power socket: Type A, Type B |
| Saint Kitts and Nevis | 230V 60Hz | Power socket: Type A, Type B,Type D,Type G |
| Taiwan | 110V 60Hz | Power socket: Type A, Type B |
| Thailand | 220V 50Hz | Power socket: Type A,Type B,Type C,Type F |
| Trinidad and Tobago | 115V 60Hz | PPower socket: Type B, Type C, Type Fower socket: Type A, Type B |
| Turkmenistan | 220V 50Hz | Power socket: Type B, Type C, Type F |
| Turks and Caicos Islands | 120V 60Hz | Power socket: Type A, Type B |
| United States of America | 120V 60Hz | Power socket: Type A, Type B |
| United States Virgin Islands | 110V 60Hz | Power socket: Type A, Type B |
| Venezuela | 120V 60Hz | Power socket: Type A, Type B |