A mineral-insulated (MI) heating cable consists of a central metal conductor surrounded by a compressed mineral insulation — in Hott-Wire’s case, inert fiberglass — encased in a copper outer tube and coated with an HDPE jacket. MI cable technology was first patented in 1896 and has been used in critical applications including nuclear reactors, fire alarm systems, military equipment, and emergency infrastructure precisely because of its extraordinary durability and resistance to mechanical damage, high temperatures, and moisture. Heatizon’s Hott-Wire brings this industrial-grade construction to snow melting applications, engineered specifically for radiant heating performance.

Yes. Hott-Wire is ETL listed for snow and ice melting applications — certified by Intertek, an OSHA-recognized Nationally Recognized Testing Laboratory carrying equal legal standing to UL and CSA listings in the United States. All Heatizon systems are designed to ASHRAE standards for snow melting load calculations by region.

Hott-Wire carries a 10-year manufacturer’s warranty — the longest available in the line-voltage mineral-insulated heating cable category. The warranty is backed by the cable’s MI construction: a copper conductor in fiberglass insulation inside a copper tube, which provides exceptional resistance to moisture, mechanical damage, and the temperature extremes encountered in outdoor snow melting applications.

Hott-Wire operates at line voltage — 208V, 240V, or 277V AC supplied directly from the building’s electrical panel. Hott-wire MI can also accommodate 480V and 600V (Canada). Smaller systems typically use a 208V, 240V, or 277V supply with a 30-amp breaker; larger area installations use a double-pole 40-amp breaker. Unlike Heatizon’s Tuff Cable, Hott-Wire does not require a step-down transformer — the cable connects directly to the line voltage supply through a relay or contactor panel.

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.

Hott-Wire is Heatizon’s line-voltage electric snow melting and radiant heating cable — available in two configurations. The first is a mineral-insulated (MI) fixed-length cable: a central copper conductor surrounded by fiberglass insulation compressed inside a copper tube with an HDPE jacket, factory-terminated with pre-connected cold leads. The second is a self-regulating cut-to-length cable that automatically adjusts its heat output based on ambient temperature. Both variants run at line voltage — 208V, 240V, or 277V (480 and 600 volts for the MI version) — without a step-down transformer, and both are custom-designed to ASHRAE standards for each project.