74 22/4 Plenum rated omniplen insulation/jacket control bare copper cable has voltage rating of 300-Volts. It has green color-coded conductors for easy user identification. Cable has outer diameter of 0.125-Inch. This shielded cable is ideal for power limited control circuits and for wiring intercom, security as well as audio systems. Cable meets NEC Article 725-CL3P, CMP, MPP standards.