Why do electrical wires have plastic coverings? - Quora
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Will wires have issues with connection if you twist them together and skip soldering them and cover them with duct tape? - Quora
What is the purpose of those small plastic balloons on the wires that run between huge transmission lines? - Quora
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Why do electrical wires have plastic coverings? - Quora
What is the red, white, and black wire for in an electrical wire? - Quora
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How to find out if the wire has electricity without cutting the plastic cover - Quora
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