About Heating Cables & Tape
When water pipes are exposed to cold temperatures either outdoors, underground or in a crawl space, you can protect them from freezing by wrapping them with heat tape. Heating tape is actually a cord or heat cable with encased electrical wire that when plugged in regulates the temperature around plastic or metal pipes.
Upon wrapping your exposed pipes with heat tape, be sure to secure it with electrical tape and then cover it with pipe insulation. This will keep your pipes protected and help ensure they maintain the right temperature the whole season through.