World Plug Guide

International Electrical Standards Reference

Type B (NEMA 5-15)

Grounded110-127V

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Overview

Similar to Type A but with an additional round grounding pin. Standard grounded plug in North America.

Pin Configuration
2 flat parallel pins + round ground pin
Grounding
Yes - Earth pin included
Typical Voltage
110-127V
Plug Type
Type B

Countries Using Type B (6)

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Technical Details

Design: The Type B (NEMA 5-15) features 2 flat parallel pins + round ground pin. The grounding system provides additional safety for high-power appliances.

Safety: This plug type is rated for 110-127V electrical systems. The grounding pin helps prevent electric shock by providing a path for fault current.

Compatibility: Always verify both the plug shape AND voltage compatibility before using adapters. A physical adapter does not convert voltage.