A:AnswerNot sure about the temperature rating but I’m from San Antonio Texas gets extremely hot in the summertime I’m using these wires for my outdoor speaker system haven’t had any issues Good quality wire
A:AnswerYou described it 2 conductor correctly. There are some wires (e.g. for subwoofer or in-wall wiring) that carry 4 conductors so you only have 1 cable to pull through.