For use on air compressors, alternators, generators, electric motors, power tools, and other electrical equipment. Removes grease, dirt, oil, printing ink, tar, grime, adhesive, and resins. Will not harm most metals and painted surfaces. Electric motors and generators may be cleaned while in use, when used in properly ventilated areas. Energized equipment use only. Not to be used for motorized vehicle maintenance, or their parts. Do not use on plastics. Dielectric strength of 30kV (or 30,000 volts).