From the Manufacturer
Duck brand Pro Series electrical tape is UL and CSA approved with excellent stretch, adhesion, and conformability properties for both indoor and outdoor applications. The 8.5-mil black vinyl tape performs well up to 600 volts and temperatures between 0 and 176 degrees Fahrenheit. The tape resists abrasion, moisture, solvents and is flame retardant. It is designed for both home and professional electrical and splicing applications. 3/4-inch by 66-foot roll.
3/4" x 66' Premium Vinyl Cold Weather Electrical Tape, Carded.