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Installing a 240 Volt Circuit Breaker

By Bob Formisano, About.com

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The 240 Volt Twist Lock Plug and Receptacle

240 volt plugs and receptacles are specially designed for safety.

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The plug and receptacle for a 240 volt circuit can come in a number of configurations. This particular tutorial shows a 240 volt; 30 amp; 3-wire system with a twist lock plug. The plug will insert into the receptacle and then be locked into position with a slight twist, preventing it from being pulled out.

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