Quick Menu Preparing for your project Can I use the non-jacketed self-regulating cable outdoors? Can I use non-jacketed cable on my roof? What is the power supply for the non-jacketed cable? What is the non-jacketed cable best for? How is the non-jacketed cable applied to a pipe? What are the maximum circuits for Warmup non-jacketed cable? What is the heat output of the non-jacketed cable? Can I use the non-jacketed self-regulating cable outdoors? No. This cable is for indoor use only.