How do I know what size generator I need?

Choosing the right size generator is a crucial decision that depends on your power needs and intended use. 

Selecting a generator that is too small may lead to power shortages, while one that is excessively large can result in unnecessary expenses. To determine the appropriate generator size, consider the following factors.

Assess your power requirements. 

Create a list of essential appliances and devices you intend to power during an outage or at an event. 

Note the amps ratings for each item. Add up these values to determine the total amps needed. Remember to consider starting amps, as some appliances require more power when initially turned on.

Type of generator to suit your needs

Consider the type of generator that suits your needs. Portable generators are suitable for outdoor activities and small-scale power needs, while standby generators are designed for larger applications, providing backup power to homes or businesses during outages.

Understanding generator size

Understanding the generator’s size is essential. Generator sizes are often expressed in kilowatts (kW) or kilovolt-amperes (kVA). One kilowatt is equal to 1.25kVA.

For example, if your total power requirements are 50amps (Single phase), you would need a generator rated approx 12kVA.

Generator fuel efficiency and runtime

Consider the generator’s fuel efficiency and runtime. A generator with higher fuel efficiency can provide the necessary power for longer durations on a single tank, which is crucial during extended power outages.

Future expansion or changes in power needs

Additionally, think about future expansion or changes in power needs. If you plan to add more appliances or devices, it’s advisable to choose a generator with a bit of extra capacity to accommodate potential increases in demand.