an electrical insulator prevents the flow of electricity
insulated_wire is electrical_wire. electrical_insulator is insulating_medium. insulated_wire is not electrical_wire. power_cord is not multi_conductor_insulated_wire. electrical_conduction is not flowing. electrical_outlet is not electrical_conductor. electrical_insulator is not insulating_medium. electrical_plug is electrical_conductor. electrical_plug is not electrical_conductor. electrical_outlet is electrical_conductor.