How Transfer Switches Work - Brite Generators

The Brains Behind the Power

A standby generator is just an engine. The Automatic Transfer Switch (ATS) is the intelligence that keeps your lights on. Here is exactly how it works.

What Does It Actually Do?

Think of the Transfer Switch as a "Traffic Cop." It stands between the Utility Grid and your Generator. It has one job: Prevent the two power sources from meeting.

✔ Safety First: If generator power backfeeds into the grid, it can kill utility workers. The ATS physically breaks the utility connection before connecting the generator.
✔ 24/7 Sentry: It monitors voltage continuously. If it senses a brownout, it triggers the system automatically.

The Flow of Power

Source 1

UTILITY GRID

The Brain

TRANSFER SWITCH

Destination

HOME PANEL

Source 2

GENERATOR

The 10-Second Logic Sequence

0:00

Outage Detected

Voltage drops. The switch waits 2-5 seconds to ensure it's not just a flicker.

0:03

Engine Start

The switch sends a 12V DC signal. The generator cranks and warms up.

0:10

The Transfer

The contactor snaps from 'Utility' to 'Generator'. Your lights come back on.

Which Switch Do You Need?

Comparing Service-Rated vs. Non-Service Rated models.

WHOLE HOUSE

200 Amp Service Rated

The "Main Disconnect." This switch installs immediately after your meter. It disconnects the entire house from the grid, allowing your generator to power everything.

View Specs →

ESSENTIAL CIRCUITS

100 Amp Transfer Switch

The "Sub-Panel" Solution. Used when you only want to backup specific circuits (Fridge, HVAC, Lights) or if you already have an external disconnect.