For use in harsh environments where maximum conductor and electrostatic interference protection is required. Impervious armor prevents the entrance of water, gas and corrosive elements into the electrical core. Used for instrumentation and process and control applications in a broad range of commercial and industrial pulp and paper, mining, and petroleum applications. Approved for continuous use at 105°C in wet or dry locations, 130°C for emergency overload conditions, and 250°C for short circuit conditions. May be installed indoors or outdoors, aerially, in conduits, ducts, cable trays or direct burial in circuits not exceeding 300 volts. UL listed as, NEC Type MC per UL Standard 1569 and is approved for use in Class I, Division 2 hazardous locations. Impervious continuously welded and corrugated aluminum armor cable is recommended as an economical alternative to wire in conduit systems.