NEWS

Understanding the Power Requirements for a Heated Driveway

Prior to Installing a Snow Melting System

If you’re looking to install a radiant heated driveway for a residential or commercial property, one of the first things you need to confirm is whether you have the necessary power requirements. In most cases, having the power needed to run an efficient radiant snow melting system is not a problem; however, prior to any installation, contractors should work with electricians to determine that the site will have the necessary power for heating the snowmelt area.

Contractors can use the following general information to quickly asses the power needs of a snow melting system. One 30-amp breaker supplies enough power to heat a 170-square foot area. To heat a driveway of 350-square feet, two 30-amp breakers (or one 60-amp breaker) would be needed. Homeowners can check their home’s main breaker panel to see the power coming into the house. (Typical homes feature either two 100 amp panels or two 200 amp breakers. These are located at the top of the main breaker box, above the main breaker panel.)

Snow melting system installed in runaway truck ramp.

If you’re unsure of the square footage of your driveway, no worries; ProLine Radiant can calculate that for you too. In most areas, using a special state-of-the-art technology, ProLine can measure the area of your driveway while talking on the phone with you. Our helpful staff will work closely with you to ensure that the square footage of the area is measured correctly and the power requirements are therefore calculated properly.

On rare occasions when there is insufficient power available to operate a large driveway heating system, the radiant heat system can be laid out in zones. Each zone is powered separately. As a storm first hits, zone 1 would power up and melt the snow in that area of the driveway. After zone 1, zone 2 would then activate to melt the snow in that area of the driveway. Talk to a ProLine representative at 866.676.9276 for more detailed information about zoning your heated driveway.

Contactor panel and box
A contactor panel and box for snow melting system.

When it comes to determining the power requirements for heating a specific area and what power is available, remember that you don’t have to figure this out by yourself. ProLine’s experienced reps are happy to work with you to not only help you determine the necessary power requirements, but to design a system that best meets the customers’ specific snow melting and budget needs. ProLine provides complete system design services, so prior to any installation, customers will know the exact layout and power requirements of the system.

Determining the Operating Cost of an Electric Heated Driveway

Homeowners are also keen to know the general operating costs of a heated driveway. Because radiant snow melting systems are specially designed for the specific demands of the average temperature and snowfall of their location, no two radiant heat systems are exactly alike. However, there is a formula that can be used to help you determine the approximate operating cost of a snow melting system.

General Guidelines to Determine a Heated Driveway’s Operating Cost

  1. Determine the total square footage of the area that will be heated.
  2. Multiply the square footage by the heat required (37 watts per sq. ft. for residential). This will give you a total for the watts per square footage required.
  3. Divide this number by 1,000 to convert to kilowatts.
  4. Look up the kilowatts-per-hour rate from the local power utility company.
  5. Multiply the total watts-per-square footage by the watts-per-hour. This gives you the cost-per-hour of usage for the snow melting system.
  6. NOTE: Heating cables and mats are rated in total watts. If the snowmelt system is intended for a commercial application, then you would multiply the total square footage by 50 watts to get a total wattage required. (E.g., 5,000 sq. ft. x 50 watts = 250,000 watts required.)

Radiant heat provides a range of benefits for home and business owners. The operating costs of automated snow melting systems are typically less than that of hiring professional snow removal services, and can help to extend the life of concrete driveways and keeps them from being subjected to abrasive snow removal methods or harsh snowmelt chemicals or salt. And since the systems are fully automated, business owners can be assured that walks and parking areas remain free from snow and ice during winter storms, enhancing safety for patrons.

NEWS

Beat the Fall Rush

Install a Radiant Snow Melting System early in the Summer

As contractors well know, the late season rush to complete projects can be hectic – to say the least. That’s why it’s important to encourage homeowners to begin their radiant heat installation projects as early as possible. Spring and early summer is the ideal time for construction projects, and it makes lives for professional builders a little less stressful as cooler weather looms on the horizon. Completing projects early in the summer also allows contractors to take on more business later in the season, increasing the earning potential for the year.

Completing a project in the spring and early summer is beneficial to home and business owners as well. Having a radiant heat system installed well before the arrival of Old Man Winter allows consumers to get familiar with their systems and troubleshoot any issues if necessary.

Heated paver driveway

Whether your customers are looking to pour new concrete or repair existing pavement, radiant heat installation is an excellent way to increase value and lengthen the lifespan of driveways from harsh snow melting chemicals and snow removal equipment. It’s a smart investment that can also benefit business owners by eliminating slick walkways and parking areas to greatly reduce the chances of injury liabilities from pedestrian “slip-and-fall” accidents. Radiant snow melting systems also eliminate the need for time consuming manual snow removal and the possible injuries and lost work time from shoveling.

With radiant heated driveways and walkways, you get energy-efficient, round-the-clock snow removal to keep areas clear of snow and safe for pedestrians. These automated systems operate silently on renewable energy and are maintenance free.

Radiant heat applications are extremely flexible and adaptable, offering homeowners many options to achieve their goals. ProLine will custom design each system to best meet the specific needs of the customer. Consumers have the option to heat entire areas, a strip in the middle of the driveway, or just two 24-inch wide tire tracks. The layout options are virtually limitless.

Snow melting systems can also be installed in existing concrete or asphalt driveways. Saw cut technology can be used to cut grooves in concrete driveways where the cable is placed. A special epoxy is then placed in the grooves, over the cable. To heat existing asphalt driveways, the heat cable is laid out over the old asphalt and then a new layer of asphalt is applied over the cable. ProLine offers special heat cable that is designed to withstand the extreme temperatures of hot asphalt applications.

To better understand the options available, contact ProLine for free consulting or a free estimate. ProLine has the experience and resources to provide contractors with top tier solutions at preferred pricing, all backed by industry leading customer services. And once you’ve installed one ProLine system, we can refer you for future projects in your area. Call 866.676.9276 today to learn more.

NEWS

Making Ground Fault Protection Requirements Easy

An Easy, Affordable Solution for Ground Fault Protection

In accordance with the National Electrical Code (NEC), all electric snow melting, roof deicing and outdoor pipe heating systems require ground fault protection for safe operation. This often results in time-consuming and costly delays for installers because these breakers can be expensive and difficult to find. However, ProLine has taken steps to eliminate this issue and facilitate a quick, safe installation.

ProLine not only offers contactor panels with built-in ground fault protection, but also offers separate ground fault protection units with snowmelt systems and activation devices. These affordable units provide an easy-to-integrate solution to meet the NEC requirements for snow melting system ground fault protection.

Ground fault protection equipment enclosure

   Ground fault protection equipment enclosure.

ProLine offers two ground fault units: the GF-1 and GF-2. The GF-1 unit provides single-circuit protection and the GF-2 provides dual-circuit protection (for 120/208/240VAC circuits up to 60A). Unlike highly sensitive GFCI breakers, ProLine’s GF unit maintains a 30mA fault trip point to help prevent nuisance tripping. The unique design of the units allows installation of standard, off-the-shelf overload breakers into the customer load center. Installers simply size the breaker and wiring for the system (15A to 60A), and then install the GF unit between the load center branch circuit and the sensor/controller and heat cable. The overload breaker protects the wiring while the GF unit provides the ground fault protection.

The ground fault unit is housed in a rugged, NEMA 4X/IP65 rated enclosure, making it suitable for indoor or outdoor installation. The enclosure’s gasket-sealed front access door allows for easy testing and reset. All internal electronic components are specified for -40°C to +60°C operation. The enclosure is designed so that it can be easily surface-mounted near the load center or near the snow melting system, depending on the installer’s preference. The enclosure also features several “knockouts” to provide flexibility for installation and wiring. The base of the ground fault unit’s enclosure can accommodate standard ½ and ¾-inch conduit hubs. Four mounting holes outside the enclosure gasket make mounting simple while ensuring weather-tight performance.

Features

  • Easy installation; convenient access for wiring
  • Compatible with inexpensive, off-the-shelf overload circuit breakers
  • Provides true 30mA trip point GFPE protection
  • Meets NEC Article 426.28, 427.22, and CEC 62-300 requirements
  • Protects 120/208/240VAC systems up to 60A (#14-#6 CU-only conductor capacity)
  • Not Compatible With 277VAC or L-N-L 240VAC
  • UL listed (U.S. and Canada) NEMA 4X enclosure for indoor or outdoor installation
  • Sealed, hinged front cover that latches for easy testing and reset access
  • No overload rating means only two part numbers for simple stocking
  • Weatherproof and corrosion resistant enclosure
  • Operating temperature range of -40°F/C to +140°F/+60°C

The GF-1 and GF-2 can be used directly with the WS-2C, WS-5C and WS-8C aerial mount snow sensors. The ground fault units can also be used with ProLine contactor panels, switches, and any system up to 60A. Since the overload protection is provided by the load center breaker, only two GF models are required to cover the full range of 15A to 60A, one or two circuits. This allows ground fault protection with kitted systems without having to identify the customer’s load center type or researching whether a combined overload/GFPE breaker is available and how long it will take to receive.

Including a ground fault unit gives installers all the components necessary to complete the snow melting system so that it is ready to install. And the GF unit provides a ready-made solution when installing or retrofitting a snow melting system in an older facility that was wired well before the term “GFPE” was coined. It’s an easy upgrade to help bring an existing system into compliance with modern code requirements. As your radiant heat partner, ProLine makes the process of installing a snowmelt system as easy as possible.

Radiant Heat Solutions