Slab Heat Cable 120V 188ft WHCS-120-0188


Part Number: WHCS-120-0188
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Common Support Questions (24)

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Common Support Questions


Yes. Unlike the heating cable for electric floor heating, the cold lead wires can be trimmed.

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Yes, but any furniture that may trap heat, such as pieces with an enclosed bottom, should be avoided. Furniture on legs with a clearance of at least 3" is permissible.

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When installing electric floor heating over a concrete slab, an insulating underlayment like ThermalSheet is highly recommended to ensure efficient operation, faster heating times and warmer floor temperatures.

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The amount of amperage draw depends upon how large the area is that you are heating. For coverage of areas less than 30 square feet, the system will draw less than 3 or 4 amps. If you have a larger area over 120 square feet of heated space, then you may need a larger breaker plus additional controls. No matter what the size of the area you choose to heat, we recommend a dedicated circuit for your electric radiant floor heating system.

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Electric-resistance heating cables and systems have no polarity. This includes all current WarmlyYours heating elements.

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The breaker and wire sizes are selected based on the total amperage of the WarmlyYours heating system connected to a single thermostat. This information is on the WarmlyYours heating system's installation plan, electrical plan, or UL label. Based on guidelines from the National Electrical Code: loads up to 16 Amps may utilize 12 gauge wire with a 20-Amp breaker, and loads up to 12 Amps - 14 gauge wire with a 15-Amp breaker. Local code and/or other factors may change these guidelines.

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No. A bathroom floor would be installed in the same way. Our TempZone floor heating systems are wet-location listed and ideal for bathroom floors.

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Yes, Luxury Vinyl Tile (LVT) is typically installed over the embedded heating element using self-leveling cement (SLC). Many people choose to use SLC when installing tile over floor heating.

We do not suggest using thinset to encase the heating wires with LVT, as it is very difficult to get thinset completely flat.

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Yes, we have TempZone Shower and Bench mats with sizes designed specifically for shower installation and they are wet location listed for for installing electric radiant floor heating to a shower.

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One thermostat can control multiple heating mats/cables as long as all the elements are using less than 15 amps. For TempZone™ Flex Roll systems for example that would be maximum of 120 sq.ft. for 120V systems and 240 sq.ft. for 240V.

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Yes, if the flooring manufacturer recommends this installation method. In most cases, the heating element will still need to be embedded in self-leveling cement before the flooring is installed.

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There are heating systems designed for floating floors, such as our Environ system. However, the flooring must be rigid enough so it does not mold itself to the heating cables over time.

Check the flooring manufacturer's floor heating recommendations. In most cases, the heating system will need to be embedded beneath the flooring. Check for all "flatness" requirements for the flooring you choose. The flattest floors utilize self-leveling cement when installed correctly.

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The requirements are: 20 watts per square foot foot (with 3" spacing) without a floor covering; or 15 watts per square foot (with 5" spacing of cable only) with a floor covering. To calculate your exact power requirements, multiply the square feet by 20 or 15, as listed above and then divide by the voltage (120V or 240V) to arrive at Amps.

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82°F - 85°F is the most common comfortable warm temperature of the floor.

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Yes, we offer several options to help make your floor heating system water resistant or waterproof. Our TempZone product line is designed for wet areas - making it completely safe for rooms that will have water on the floor at times or may experience leaks or flooding. We also offer waterproofing bands for our TempZone Cable + Prodeso Uncoupling Membrane system. Allowing you to waterproof all seams and the perimeters of the wall - guaranteeing that your floor heating system stays safe and prevents water from leaking to areas below.

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Stop installation, box out a 3"×3" area surrounding the damaged area, and call tech support at (800) 875-5285.

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Any trade professional is qualified to layout slab heating cables and/or mats; electricians must make the electrical connections and test the wire; you can hire a concrete contractor to install the concrete for you.

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You can control your slab heating system with any WarmlyYours nSpiration Series thermostat. Depending on the size of your project, you may also need to add a relay or nJoin power module.

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WarmlyYours has recently begun including floor sensors with our heating elements to help ensure customers will have everything they need for optimal operation of their radiant heating systems.

The sensor included with your floor heating element can be installed with the heating system (the sensor is equally spaced between runs of the heating wire--see your install manual for more info). Installing this sensor with your floor heating control will enable energy efficient operation of the floor warming system based on the floor temperature instead of the ambient room temperature.

We generally recommend that you install a second, unconnected backup floor sensor alongside the primary one. In the very unlikely event that your first floor sensor is damaged, this install method will save you from having to pry up flooring to replace a floor sensor. You simply disconnect the damaged sensor from the thermostat and connect the backup sensor.

In addition to the floor sensor that was included with your heating element, our nSpiration Series thermostats also come with a floor sensor. If you purchase both a heating element and an nSpiration Series thermostat from WarmlyYours, you'll have a primary and a backup floor sensor for your system.

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The slab heating cable sits in the middle of concrete pour. Here are the layers for this application from bottom to top:

  • 8-10" of compressed crushed rock aggregate
  • 2" polystyrene insulation
  • 2 - 3" layer of concrete
  • Rebar and/or reinforcing mesh
  • Attach slab heating cable to rebar/mesh
  • Final layer: 2-3" or concrete as final flooring surface

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The layers for the full installation are as follows:

  • Bottom: 8-10" of compressed crushed rock aggregate (may already exist)
  • 2" polystyrene insulation
  • 2-3" layer of concrete
  • Rebar and/or reinforcing mesh and attach the cable or mat
  • Top: Pour a 2-3" layer of concrete as the final flooring surface

Call tech support at (800) 875-5285 to customize this to your unique application.

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Solution:

The ground wire in the floor mat must be connected directly to the ground wire of the supply or to the house ground wire.


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Test the Slab Heating cable or mat using a digital ohm meter as shown here. Also test the slab heating cable or mat using a Mega Ohm meter as shown here. And this video shows how to do the Ohm test.

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You should install the cable 2-3" below the finished surface, and attach it to rebar and/or reinforcing wire mesh to secure the cable in place.

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Publications and Manuals


Technical Information

Slab Heating Master Spec (English)


Specifications


Electrical

Amps 18.75 A
Floor Load 2.3 kW
Ohms 6.4 Ohm
Voltage 120 VAC
Watts 2250 W
Watts Per Sq. Ft. 15-20 Watts Per Sq. Ft.

Warranty / Certifications

Approvals cCSAus Listed
Warranty 10 Year Warranty

Performance

BTU Per Hour 7677

Product Dimensions

Cold Lead Length 20′
Coverage at 3 Inch Spacing 47 sqft
Coverage at 4 Inch Spacing 62.6 sqft
Coverage at 5 Inch Spacing 78.3 sqft
Heating Element Thickness 0.25″
Length 188′
Width 0.25″

Logistics

Country of Origin (COO) India

Installation

Floor Types Cement, Tile, Marble, Stone, Vinyl, LVT, LVP, Wood, Bamboo, Carpet, and more

Cabling Specs

Ideal Cable Spacing 3″
Wire Energy efficient twin-conductor

Identifiers

SKU WHCS-120-0188

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