NEMA 5-15

Type B plug and socket

The earthed American three-pin. Used in 58 countries.

Type B socket face
Pins
2 flat blades plus 1 round earth pin
Rating
15 A / 125 V
Earth
Earthed
Standard
NEMA 5-15

What Type B looks like in use

Type B adds a round earth pin below the two flat blades of Type A. It is the standard earthed socket in North America, rated 15 A at 125 V, and it is deliberately backwards compatible: ungrounded Type A plugs still fit.

Higher-current versions (NEMA 5-20, with a T-shaped neutral slot) exist for 20 A equipment, and 240 V appliances such as dryers and stoves use entirely different NEMA 14 connectors.

Watch out: A Type B socket accepts both Type A and Type B plugs. If your device has a Type B plug, it will not fit an unearthed Type A socket.

Countries using Type B

58 countries in total

Other plug types

Check your own devices

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