copper wires inside an electric motor (IMAGE) Martin-Luther-Universität Halle-Wittenberg Caption The copper wires inside electric motors are insulated with special resins that protect them from external influences. Credit ELANTAS Usage Restrictions Use with credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.