A backup generator should have sufficient kilowatt (kW) capacity to meet the electrical needs of the devices and systems you need to remain operational during an outage. The specific kW rating depends on the total power of essential appliances, lighting, heating or cooling systems and other critical equipment. For residential use, backup generators typically range from 5 kW to 20 kW, with higher capacities needed for larger homes or greater electrical needs.
For a home, a backup generator should typically provide between 7 kW and 15 kW.
This range is usually sufficient to cover essential needs, including lighting, refrigeration, heating or cooling systems, and possibly a few other critical devices. Exact power consumption varies depending on the size of the home and the number and type of appliances you want to run during an outage.
A backup generator should have enough power to handle the total power of the essential devices and systems you plan to use during an outage. This usually involves calculating the sum of wattages for devices such as refrigerators, heating or cooling systems, and lighting.
A generator with a capacity between 7 kW and 15 kW is often recommended for most residential applications to ensure a reliable power supply.
A generator should have a power rating that matches or exceeds the total electrical needs of the appliances you want to run. For example, if the total power of essential appliances and systems is 10,000 watts, you should choose a generator with at least this capacity to avoid overloads.
It is essential to consider the starting power of devices, which may be higher than their operating power.
When shopping for a standby generator, consider several key factors: the right electrical capacity for your needs, the fuel type for convenience and availability, and features like auto start and transfer switches for easy to use. Additionally, evaluate the generator’s noise level, safety certifications, and warranty terms. Ensuring proper installation and regular maintenance is also crucial for reliable operation in an emergency.