why are the household electric wires covered with plastic or rubber?
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Most electrical wire is covered in a rubber or plastic coating called insulation. ... The purpose of insulation covering the metal part of an electrical wire is to prevent accidental contact with other conductors of electricity, which might result in an unintentional electric current through those other conductors.
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Electricity is a dangerous form of energy and it can kill. Covering electrical wires in plastic guarantees that the electrons flowing through the wires will not flow through your body when the wire is touched.
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