Type B power plug
Complete guide to the Type B electrical power plug standard.
Technical Specifications
- Pins: 3-pin
- Shape: Two flat parallel pins with round grounding pin
- Grounding: Yes
- Voltage: 110-127V
- Current: 15A
- Frequency: 50/60Hz
Type B is the grounded version of Type A, with an additional round grounding pin. It's the standard for North American outlets and provides additional safety for high-power appliances.
Countries Using Type B
Type B plugs are used in 36 countries worldwide
Africa (1)
North America (18)
Oceania (3)
Comparison with Similar Power Plug Types
Type B is identical to Type A with the addition of a grounding pin. Type A power plugs can fit into Type B sockets. Type B is the standard for North American outlets that require grounding.
Visual Comparison
Compatible With
When Traveling TO Countries with Type B
If you're traveling from a country that doesn't use Type B power plugs, you'll need a power plug adapter to physically fit your devices into Type B outlets. Make sure to check voltage compatibility as well - most countries using Type B operate at 110-127V.
When Traveling FROM Countries with Type B
If you're traveling from a country with Type B to countries with different power plug types, consider a universal travel adapter that includes multiple power plug configurations. This will work in 150+ countries worldwide.
Common Misconceptions
All North American outlets are Type B
Many older outlets and lamp sockets use Type A (ungrounded). Type B is required for most modern appliances and construction codes.
The grounding pin isn't important
The grounding pin provides critical safety protection against electrical faults, especially for metal-cased appliances.
Frequently Asked Questions
What countries use Type B power plugs?
Type B power plugs are used in 36 countries, primarily in North America, Asia, South America.
Is Type B grounded?
Yes, Type B power plugs are grounded (earthed), providing additional safety for high-power appliances.
Can I use a Type B adapter for all my devices?
A plug adapter only changes the physical shape - it doesn't convert voltage. Check that your devices support the voltage used in your destination country (110-127V). Most modern electronics are dual voltage (100-240V), but always verify on the device label.
Where can I buy a Type B adapter?
Type B adapters are available at airports, electronics stores, online retailers, and travel shops. For better prices and selection, purchase before your trip. Universal travel adapters that include Type B are also a good option for frequent travelers.