Yestramski Electrical Services Inc. & Emergency Power Systems
KOHLER automatic transfer switch

How It Works

It’s easier than you think. And here’s some more good news: you won’t lift a finger. Everything’s automatic.

Before the power goes out

Your automatic transfer switch (ATS) monitors the electricity coming from the utility. It's working 24/7 to protect your home.


Power Indicator
This handy little device is located on your automatic transfer switch. It tells you where your home’s power is coming from — utility or generator (see colored icons to right).

Weekly Self-Test
Your KOHLER® generator will exercise itself and run diagnostic tests for 20 minutes each week to make sure it’s ready when needed. And guess what? It happens automatically.

OnCue® System
With OnCue Generator Management System, you can manage your KOHLER home generator, receive updates via text or e-mail, view real-time power operation and more. All from your computer, phone or tablet.

When the power fails or drops below an acceptable level (brownout), the ATS signals the generator to start. In seconds, the ATS transfers your power from the utility to the generator.

Total Reliability
KOHLER generators endure hundreds of tests (during design and production) before they reach your home. The result is total reliability.

PowerBoost™
With PowerBoost Technology, KOHLER generators can handle large starting loads like central air conditioners without dropping power to other appliances.

Lasting Power
Inside every KOHLER generator is a commercial-grade engine built to withstand extreme workloads. We’ll keep your house comfortable as long as the power’s out.

The utility power returns.

When the utility power is restored, the ATS automatically transfers your power from the generator to the utility.

Your generator turns off.

Your standby generator automatically shuts down, ready for the next power outage.