How Does a Whole-House Generator Work?
A standby generator is a permanently installed backup-power system designed to respond automatically when normal utility power is unavailable.
From outage to backup power
- The system monitors utility power.
- When qualifying loss of utility power is detected, the generator starts.
- Transfer equipment changes the home's supplied source according to the installed design.
- The generator supplies the connected or managed loads.
- When stable utility service returns, the system transfers back and completes its shutdown sequence.
What determines what it can power?
Generator capacity, transfer-system configuration, fuel supply and load management determine what loads can be supported.
Why installation matters
The generator has to operate as part of the home's electrical system. Proper sizing, transfer equipment, fuel supply and commissioning are essential to reliable operation.