What is the difference between Hott-Wire and Tuff Cable?
The primary difference is voltage. Tuff Cable is a low-voltage system — it operates at 65 volts or less via a step-down transformer, making it well suited to mid-size residential and commercial projects and roof deicing applications. Hott-Wire is a line-voltage system running at 208V, 240V, or 277V directly from the supply — no transformer required — making it more practical for large commercial and industrial snow melting surfaces where higher wattage output and simpler electrical integration are priorities. Both cables can be installed in concrete, asphalt, pavers, and retrofit saw cuts, and both are rated for hot-pour asphalt. Tuff Cable also carries a UL 1588 listing for under-roof applications; Hott-Wire does not.