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Wire, heating, ruler, .028 OPF, 120V 375, 240V 749

5.00
Based on 4 reviews
Voltage
120 V
240 V
Length
Need help? Call our experts at (800) 875-5285
How Much Cable Will I Need?
How Much Cable Will I Need?
Coverage (sq. ft.) Based on Cable Spacing
Length Voltage 3" 3.5" 3.75" 4" 5"
30′ 120 7.5 8.8 9.4 10 12.5
40′ 120 10 11.7 12.5 13.3 16.7
50′ 120 12.5 14.6 15.6 16.7 20.8
55′ 240 13.8 16 17.2 18.3 22.9
65′ 240 16.3 19 20.3 21.7 27.1
70′ 120 17.5 20.4 21.9 23.3 29.2
75′ 240 18.8 21.9 23.4 25 31.3
90′ 120 22.5 26.3 28.1 30 37.5
95′ 240 23.8 27.7 29.7 31.7 39.6
115′ 240 28.8 33.5 35.9 38.3 47.9
120′ 120 30 35 37.5 40 50
150′ 120 37.5 43.8 46.9 50 62.5
155′ 240 38.8 45.2 48.4 51.7 64.6
180′ 120 45 52.5 56.3 60 75
195′ 240 48.8 56.9 60.9 65 81.3
220′ 120 55 64.2 68.8 73.3 91.7
235′ 240 58.8 68.5 73.4 78.3 97.9
260′ 120 65 75.8 81.3 86.7 108.3
275′ 240 68.8 80.2 85.9 91.7 114.6
300′ 120 75 87.5 93.8 100 125
315′ 240 78.8 91.9 98.4 105 131.3
340′ 120 85 99.2 106.3 113.3 141.7
355′ 240 88.8 103.5 110.9 118.3 147.9
375′ 120 93.8 109.4 117.2 125 156.3
395′ 240 98.8 115.2 123.4 131.7 164.6
432′ 120 108 126 135 144 180
435′ 240 108.8 126.9 135.9 145 181.3
515′ 240 128.8 150.2 160.9 171.7 214.6
595′ 240 148.8 173.5 185.9 198.3 247.9
675′ 240 168.8 196.9 210.9 225 281.3
749′ 240 187.3 218.5 234.1 249.7 312.1
864′ 240 216 252 270 288 360

The amount of cable you'll need depends on the heat output and amount of heating coverage you want, both of which are impacted by the spacing of the heating cable. The spacing of the heating elements is dictated by how the cable is installed and WarmlyYours offers two different installation methods: with Fixing Strips or with our Prodeso Membrane.

Fixing Strips

An economical option, requires more work than the membrane.

Ideal spacing for installing TempZone 3.7-watt Cable:

  • 3" (14.8-watts per sq. ft.)

Other spacing options:

  • 4" (11.1-watts per sq. ft.)
  • 5" (8.88-watts per sq. ft.)
Prodeso Membrane

Costlier than strips, speeds up installation and provides uncoupling benefits

Ideal spacing for installing TempZone 3.7-watt Cable:

  • 3.75" (11.84-watts per sq. ft.)

Other spacing options:

  • 5" (8.88-watts per sq. ft.)

You can use our quote tool to get a rough estimate of the amount of cable you'll need for a project.

Get Started

Or contact us for help:
  • Email Us
  • Call Us 7:30 a.m. – 5:30 p.m. CST
  • 7:30 a.m. – 5:30 p.m. CST

You can also submit a drawing of your project (with dimensions) and we'll provide you with a free installation plan with the exact amount of cable you'll need. Get started

Features

  • Built-in ruler markings for precise, repeatable spacing
  • Ideal for large areas requiring consistent coverage
  • Flexible, durable cable for clean turns and complex layouts
  • Comes with easy-to-read hash marks at every half-inch, inch, and foot increment on the cable
  • Can be used to heat some of the most popular floor coverings like tile, stone, marble, luxury vinyl tile, and more

TempZone™ Floor Heating Ruler Cable Description

Wire, heating, ruler, .028 OPF, 120V 375, 240V 749

Specifications

Electrical

Amps 6.8 A
Cold Lead Wire Gauge 18 AWG
Floor Load kW kW
VOP 63
Watts Per Sq. Ft at 3.75 Inch Spacing Up to 12
Watts Per Sq. Ft. 9-15
Watts Per Sq. Ft. at 3 Inch Spacing Up to 15
Watts Per Sq. Ft. at 4 Inch Spacing Up to 11
Watts Per Sq. Ft. at 5 Inch Spacing Up to 9

Warranty / Certifications

Approvals cULus
Warranty 25 Year Warranty
Wet Location Listed US, Canada

Product Dimensions

Cold Lead Length 12′
Cold Lead Thickness 0.22″
Factory Splice Thickness 0.41″
Heating Element Thickness 3/16″
Weight 0.038 lbs

Appearance

Color Yellow

Installation

Floor Types Tile, Marble, Stone, Vinyl, LVT, LVP
Ideal Cable Spacing with Fixing Strips 4″
Ideal Cable Spacing with Prodeso Membrane 3.75″

Logistics

Package Contents (1) Wire heating ruler .028 OPF 120V 375 240V 749 (WR028); 1x Floor Heating Sensor (FH-BACKUP-SENSOR)
UNSPSC Code 40101830

Identifiers

SKU WR028
UPC (GTIN-12) 881308084530

Installation Plans

This is a real example of an installation plan that uses this product. If you want to design your own room or have any questions, please contact us.

Installation Plan
Flooring
Tile, Marble or Stone Subfloor
Unconfirmed/Other Voltage
120V Operating Cost
13 cents per hour
Design Your Own Project Get a Free Quote

This Installation Plan Includes:

1 x
TempZone™ Flex Roll 120V 1.5′ x 38′, 57 sq.ft., 7.2A
1 x
Circuit Check
1 x
Electrical Rough-in Kit Single Gang Box with Double Conduits
1 x
nJoy WiFi Thermostat - Programmable, Class A GFCI, w/Floor Sensor

Frequently Asked Questions

Showing all 5 questions

Our electric radiant floor heating systems have withstood rigorous safety testing and earned the UL listing. They produce much less EMF than common household appliances like your TV or vacuum cleaner. The EPRI (Electric Power Research Institute) tests all electrical devices and publishes the data. Many common household appliances are tested at a distance of 6 inches. The test results indicate that on average, the EMF emitted for the following appliances, measured in Milligauss (mG) units, is:

Vacuum Cleaner: 300 mG

Microwave: 200 mG

Portable Heater: 100 mG

Dishwasher: 20 mG

Washing Machine: 20 mG

WarmlyYours TempZone™ (Twin): 1.8 mG

32 people found this helpful Was this helpful? Yes No

WarmlyYours’ TempZone™ product is most commonly installed under tile, stone, and marble flooring, but can also be installed under many other popular floor covering options such as hardwood, vinyl and linoleum. We also have our Environ system, which is an electric floor heating product as well and is specially designed for installation under carpet (in the U.S. only), laminate and floating wood. WarmlyYours can accommodate any flooring type with either of the electric radiant floor heating products that we offer. If your flooring type isn't listed here, just give us a call at (800) 875-5285 and we will be happy to discuss it with you.

29 people found this helpful Was this helpful? Yes No

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

22 people found this helpful Was this helpful? Yes No

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

14 people found this helpful Was this helpful? Yes No

Yes, the drying effects of electric radiant floor heating will reduce the humidity coming from the slab, which is the largest source of moisture.

11 people found this helpful Was this helpful? Yes No

Customer Reviews

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