TOPDURE Intelligent Heat Tape for Water Pipe Freeze Protection,Self-Regulating Heating Cable for Metal and Plastic Water Pipes, Built-in Thermostat, Energy-Saving Water Pipe Heat Cable,120Ft, 120V - Amazon.com
RAYCHEM, For Indoor/Outdoor, 250 ft Cable Lg, Electric Heating Cable - 4E515|734921-000 - Grainger
tracing-thermocable
Troubleshooting Electric Heat Tracing Systems | AIChE