How to Reset a Circuit Breaker
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Move handle to OFF position.
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Return handle to ON postion.
How to Change a Fuse
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First, disconnect lamps and appliances in use when circuit went out.
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Open main switch or pull-out section of panel labeled "main" in the service entrance to cut off current while working at the branch circuit box.
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Identify the blown fuse. When a fuse blows, the transparent section becomes cloudy, or blackened.
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Replace the blown fuse with a new one of proper size. The smaller sizes screw in and out just like light bulbs.
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Close the main switch or replace pullout section to restore service.
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Throw away the blown fuse.