That is my thought too. I am just trying to understand the differences between a power limited cable and non power limited cables. I am wondering if there are differences in contruction, materials used, or test methods for determining ratings.
I understand that mil spec type E wire is rated for 1000V but the same construction is only listed for 300V by UL specs.
I wonder if the power limited specification changes the test method or rating method used to determine the cable ratings.