How Long For a Standby Generator to Kick In?

Standby generators can come to the rescue in an energy pinch. But there may be an issue with the time required to get them up and running. If you’re in an emergency situation, every minute counts. That’s why it’s important to ensure your standby generator is ready to go when needed.

How long does it take for a standby generator to start?

How long for a standby generator to kick in? This is determined by a number of factors, including the type of standby generator, the size of the standby generator, and the load on the standby generator. The type of standby generator will determine the time it takes for the standby generator to start up.

After a power loss, your backup generator will activate within 10-15 seconds. It takes another 10-15 seconds for the device to completely charge. So, within 10 to 20 seconds, your power system will start and transfer electricity to your house. Once it begins and operates for a few seconds, you’ll see that the generator has switched.

How does a generator start automatically?

It will start when the transfer switch detects a malfunction. The automated transfer switch cuts off the utility line and simultaneously opens the generator power line from the generator when the generator is operating at the right speed.

Related Questions and Answers

Why did my Generac randomly turn on?

A dead battery is the most prevalent cause. When the battery charger is accidentally turned off at the breaker or connected to the same circuit as the block heater, the breaker trips, this is a typical symptom.

Do generators need to rest?

Fuel fumes might be ignited by the generator’s heat and start a fire if it is not properly maintained. When recharging the generator, you should wait until it’s totally cooled down before you do so.

What is the correct way to size a standby generator?

This video should help clarify:

What is the most likely cause for a generator start-up failure?

Most generator failures occur due to battery failure. There are a number of factors that might contribute to battery failure, including weak connections and lead sulfation accumulation on plates. Coolant may also be in short supply. When generators overheat, they automatically shut down.


The “how long will a whole house generator run on natural gas?” is a question that has been asked by many. The answer to the question is it depends on how much natural gas you have in your home and how big of an appliance you are trying to power.

NEXT UP: How Close Can a Diesel Generator Be To a Building?

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James Sylvester
About James Sylvester

James S. Sylvester is an experienced OSHA Safety Supervisor with years of experience in the construction and oil & gas industries. He focuses on workplace safety, occupational health and safety systems. Learn more about James' here or connect with him on Twitter