An automatic changeover switch sometimes called an automatic transfer switch, allows switching between two power sources—usually the utility grid and a backup home generator or solar and battery storage system. It detects when the primary power fails and automatically switches to the backup source so there is no interruption to power.
Key Benefits
Installing an automatic transfer switch provides these key benefits:
Generator Backup Power Systems
When it comes to home generators, almost all of them need an automatic switching device installed next to the main electrical panel. It's wired into critical circuits so when the power cuts out, the switch tells the generator to turn on while disconnecting your house from the neighborhood electrical lines.
Solar and Battery Backup Systems
Many setups have to shut off when the grid is down to prevent backfeeding. Adding batteries and a switch fixes this - it makes your house rely solely on the sun's energy stored in your batteries. This way you can keep the lights on even if it's nighttime or cloudy.
Selecting the Right Changeover Switch
When selecting a transition switch, these key factors must be considered:
- Application (generator/solar) and home Electrical load
- Number of amps and voltage rating
- Enclosure type
- Single-phase or three-phase power
- Transition speed
- Manual operation capability
- Integrated controller vs external
Our experts at Blades Power Generation can determine the optimal switch specifications and capacity based on your unique home backup system and loads.
Proper Installation Guidelines
To function safely and efficiently, automatic changeover switches must be professionally installed following proper electrical codes and procedures. Our licensed electricians recommend these guidelines:
Locate it close to the main panel
- Mount securely with adequate clearance
- Use appropriate wire size to prevent overload
- Follow all manufacturer mounting and wiring instructions
- Test operation thoroughly post-installation
Key Wiring Connections
Making the proper electrical connections is critical for automatic transfer switch functionality. Ensure the following circuits are correctly wired according to the installation manual:
- Utility Power
- Backup Power Source (Generator/Batteries)
- Grounding Conductors
- Main Electrical Panel
- Control Wiring
Call Blades Power Generation to keep your system operating safely for years to come.
- Seamless transition to backup power - Prevents lights and appliances from shutting off when transitioning power sources
- Safety - Isolates the two power sources to prevent back feed accidents
- Convenience – Operation is fully automated for ease of use even for homeowners without electrical expertise
Two main types of home backup power systems use automatic changeover switches:
- Generator Systems
- Solar/Battery Storage Systems
