Power Plug Type B
100–127 V • 60 Hz • Yes – has a third round pin for grounding.
Type B is the grounded version of Type A, with two flat parallel pins and an additional round grounding pin. Standardized as NEMA 5-15.
Key facts
- Grounding: Yes – has a third round pin for grounding.
- Voltage: 100–127 V
- Frequency: 60 Hz
Where it’s used
USA, Canada, Mexico, Japan
History
Introduced as a safer upgrade to Type A. Now the most common plug type in North America.