The Power First 1FD91 power cord is 8 long, has a three-prong NEMA 5-15P plug on one end and bare wires on the other, and is suitable for supplying electrical power to a machine or appliance. The power cord contains 14-gauge wire with three conductions and has a maximum amperage of 15 amps. The jacket is made of black rubber for elasticity and resistance to abrasion. The cord is rated for 125V and can withstand temperatures of 32 to 194 degrees F. This item has a National Electrical Code (NEC) cord designation of SJO. (SJ indicates a junior hard service flexible cord, and O is a designation for an oil-resistant jacket.) Its nominal outside diameter is 0.375".