The Type B electrical socket (American standard NEMA 5-15) has two flat parallel pins and a round earth pin. The earth pin is longer than the flat pins so that the appliance is grounded before the power is applied. The Type B plug is used for currents up to 15 A.
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Answer:
The Type B electrical socket (American standard NEMA 5-15) has two flat parallel pins and a round earth pin. The earth pin is longer than the flat pins so that the appliance is grounded before the power is applied. The Type B plug is used for currents up to 15 A.