![]() Generac Protector Series Commercial Generators Full Load Capacity with Extensive Motor Use This method works well for facilities with equipment operating 24 hours a day, such as freezers and refrigerators. Analyze the power usage over the previous year to find the highest peak demand and then add 25 percent for reserve capacity. Most companies will include your peak demand on your monthly bill. Utilize your utility company’s billing system to find your maximum power usage. ![]() Kohler Commercial Generators Full Load Capacity by Historyīusinesses that operate 24 hours a day can calculate their electricity needs and generator size by how much power they use in a month This provides the total amps used by the facility.ĭivide the total amps by three for three-phase current, and by two for single-phase current, then multiply the result by the supply voltage, and again by 1000 for Kilowatts(kW) Required.Īdd the power in kilowatts used by each emergency safety system according to articles 700, 701, 702 and 708 of the NEC to the kilowatts required to obtain Full Load Kilowatts. Use a clamp-on ammeter on each leg of the electrical service and add the measurements together. Kohler Commercial Generator Installed at a Convenience StoreĮstimate the required generator capacity by taking full-load current measurements during peak usage at the service panel. Consult your local commercial building code authority for details and implementation in your area, and what systems are required.Ģ2kW to 40kW Cummins Commercial Generators Generator Sizing Full Load Capacity by Measurement Safety systems include alarms, fire pumps, health/safety systems, and any other system designed to protect life during an emergency. Since 2008, the National Electrical Code includes articles 700, 701, 702 and 708 which govern the sizing, installation and use of commercial generators and the critical systems that operate during an emergency to ensure safety. Smaller installations only require a building permit and installation by a qualified or licensed electrician. Large-scale commercial applications usually require an engineering plan and an engineer’s supervision during installation to ensure correct generator sizing and compliance with National Electrical Code (NEC) requirements. Liquified Petroleum Gas (LPG) or Propane is easy to store on site and poses fewer environmental risks than Diesel Fuel.Ĭommercial Generator: Choose the Right Fuel Natural gas does not require storage and is delivered directly to the user via pipeline. Natural gas is widely available in cities and towns but less common in small towns and rural areas. ![]() Diesel fuel storage is a concern and governed by local codes that vary between jurisdictions. Diesel engines have a reputation for longevity and reliability. A momentary voltage drop of 30 percent might be fine for some devices, but not others.įuel is another consideration when selecting a commercial generator. Include the allowable voltage drop for any device when calculating the reserve capacity required for the generator. Lack of starting capacity can make motors difficult to start or cause damage. The inrush current of large motors can exceed 200 percent of the normal full-load current for short periods. Most commercial applications require a greater reserve or surge capability especially when large motors on multiple pieces of equipment operate independently of each other and turn on and off frequently. Single or 3-phase power, voltage, and total power requirements are all factors to consider. ![]() Generac Diesel Protector Commercial Standby GeneratorĬhoosing the correct commercial generator for a business requires more consideration than residential applications. ![]() Commercial generators prevent losses associated with outages, keep businesses operating, and allow important building services to continue.ĥ0kW to 150kW Cummins Commercial Generators Sizing Considerations Lack of power can have devastating consequences, especially during extended outages lasting more than a few hours.īackup power for refrigeration units, freezers, heating, and security is critical during a power outage along with other applications. Without backup power, most businesses are forced to close. Even when all the equipment is the same, differences in the way a business operates, the number of customers and employees, and the surrounding environment all play a part in determining the size of commercial generators.Ĭommercial standby generators supply power for manufacturing, retail, restaurant, and other applications during power outages. Generac Commercial Generator at a Gas Station Convenience Store Commercial Generator SizingĮvery business is different and has different power needs. ![]()
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