Is it safe to use an extension cord with a three pronged but groundless electrical outlet (no ground wire)? What should be done in such cases if they are encountered? - Quora
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How to Properly Use Extension Cords to Prevent Injury and Property Damage - McGowan Program Administrators
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grounding - What is an ungrounded extension cord? Is it dangerous? - Electrical Engineering Stack Exchange
If you use a basic electric extension (not a surge protector) to power something from a grounded wall outlet, would it continue to be grounded, or must it be connected directly to
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