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Transfer Switch About
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| During actual or threatened power failure, transfer switches are engaged to transfer critical electrical load circuits from the normal source of power..
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http://www.engineersedge.com/instrumentation/transfer_switch.htm
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Switchgear About
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| Switchgear is a general term covering switching and interrupting devices that control, meter and protect the flow of electric power.
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http://www.engineersedge.com/instrumentation/switchgear.htm
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