1,000’ Pipe Freeze Protection Self-Regulating Heating Cable, 5W/ft., 120V

Part Number: PT-SR-120-05-1000
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Common Support Questions (14)

Publications and Manuals (9)

Specifications (18)

Videos (3)

Articles (2)

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Common Support Questions

No, as long as it's properly installed. However, improper installation, use, and/or maintenance of electrical heating cable can cause fires, electric shock, and/ or frozen pipes.

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No. They are not designed to be powered by DC voltage. They must be used with AC voltage. 

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Heat trace, heat tape, or heating cable for pipes is typically an electric heating cable that can be attached to the pipe which helps keep non-flowing water pipes in poorly insulated perimeter walls flowing despite harsh winter temperatures.

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Unfortunately there's no set answer for this because it depends on many factors such as the diameter of the pipes, the installation density of the heating cables, the outdoor temperature, the installation of thermal insulation sleeves, etc.

There are too many variables to provide an accurate answer. Even though this product is designed to keep pipes from freezing, it is not designed to thaw pipes. If your pipe has frozen with the heat tape installed and energized, please check the placement of the built-in thermostat and verify that the insulation has been properly installed and waterproofed.

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Yes, it can be used for both application types to prevent pipes from freezing and bursting during cold weather.

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By attaching a heating cable to the exterior of a pipe, it will transfer the heat to the pipe to prevent frozen pipes. And with the use of pipe insulation the heat will be evenly spread and won't dissipate as quickly.

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Never spiral heating cable around pipes. Attach self regulating cable in straight runs at the 8 o'clock position, or if two runs are required (pipes greater than 12“ diameter) attach the cable at the 8 o'clock and the 4 o'clock positions. Please refer to the installation manual for further information.

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WarmlyYours offers a conversion kit (SR-PLUG-KIT) to enable a plug-in requirement. This kit includes ground fault equipment protection (GFEP). The receptacle must be 120V, grounded, and approved for wet locations if located outside. The self regulating cable must not exceed 140‘ in length.

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WarmlyYours does not recommend using an extension cord for permanent installations. Pipe heat should always be plugged directly into a receptacle or hardwired to the circuit that is powering it.

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No. Only install pipe heat (heat trace cable) in accessible locations. Do not install this self regulating cable in walls or any place where the cable is hidden. Do not run it through walls, ceilings, or floors. The cable must be installed 10“ away from combustible surfaces, such as wood, and it should not be embedded in insulation or roofing material.

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Do not wrap self regulating cable around the pipe in a coiled or spiral fashion, and do not use electric tape to attach it. WarmlyYours recommends attaching the cable in a straight run and to use aluminum or fiberglass tape, pipe straps, or plastic zip ties to attach the cable. Then cover the assembly with fire-resistant insulation and assure it is waterproof. Place electrical heating cable WARNING labels every 10‘, and where the label will be clearly visible.

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Use plastic zip ties, aluminum or fiberglass tape, or pipe straps. Do NOT use vinyl electrical tape, masking tape or duct tape. Do NOT use metal wire or metal twist ties to attach the cable.

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As the names imply, constant wattage cable uses fixed wattage output per linear foot and does not automatically adjust in response to temperature changes. Self-regulating cable is manufactured with a resistance matrix placed between its 2 buss wires that varies the ohms resistance per linear foot to automatically adjust in response to temperature changes. Learn more about this in our blog Self-Regulating vs. Constant Wattage Heating Cables.

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Ice Shield is 120V or 240V and outputs 5W/ft, and is designed for roof and gutter deicing.
PRO-Tect is 120V or 240V and outputs 5W/ft, 8W/ft, or 10W/ft, and is designed for pipe freeze protection.

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Publications and Manuals



Amps 41.67 A
Benefits Can be cut-to-length & overlapped
Cable Type Self Regulating
Connection Method Hardwired
Voltage 120 V
Watts Per Ft. at 50°F/10°C 5 W

Warranty / Certifications

Approvals cULus & cCSAus Listed
Warranty 10 years


Cable Cross Section 0.42″ x 0.23″ / 10.7mm x 5.84mm
Cable Jacket Waterproof thermoplastic


Country of Origin (COO) China

Product Dimensions

Length 1000′


Maximum Intermittent Exposure Temperature, 1000 Hours (Power On or Off) 185°F / 85°C
Maximum Maintain or Continuous Exposure Temperature (Power On) 149°F / 65°C
Minimum Bend Radius 1.125″ / 28.6mm
Minimum Installation Temperature 0°F / -18°C


SKU PT-SR-120-05-1000
UPC (GTIN-12) 881308067878



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