Hot Neutral and Ground our Funny Looking Household Electrical Socket

How our funny looking household electrical socket/receptacle came to be with its HOT, Neutral and Ground holes and matching plugs. Includes why Neutral is connected to ground and why we have a separate Ground wire connected to Earth ground. Also, why the ground wire is connected to metal cases and how all this helps prevent electrical shocks.

This video was based on:
http://amasci.com/amateur/whygnd.html

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• #science_technology
• #hot
• #neutral
• #ground
• #electrical
• #socket
• #receptacle
• #plug
• #earth_ground
• #grounded
• #grounding
• #metal_case
• #ground_electricity
• #lightning
• #power
• #electronics
• #earthing