Transfer Switch
The device that switches your home between utility and generator power while making it physically impossible to be connected to both, protecting your equipment and the utility crews on the lines.
Backfeed is the danger that makes transfer equipment mandatory: a generator connected to house wiring that is still tied to the grid pushes power out through the transformer at lethal voltage, onto lines a crew believes are dead. Transfer switches make the generator and the utility mechanically mutually exclusive. Automatic versions (ATS) sense the outage, start a standby generator and shift the load without anyone home; manual versions move selected circuits over with a lever or breaker handles.
The choice between an ATS, a manual sub-circuit switch and an interlock kit is mostly a budget-versus-convenience decision, with one technical note: whole-house ATS units are sized to the service (200-amp ATS for 200-amp service), while essential-circuits switches cover a chosen subset and cost less.
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- Inverter Generator : A generator that produces clean, electronics-safe power by converting its raw output through an inverter, throttling its engine to match the load.
- Load Shedding (Load Management) : Automatically dropping or delaying big loads (AC, water heater, EV charger) so a smaller generator, or a smaller electrical service, can handle a home that would otherwise overload it.
- Home Battery Backup : Wall-mounted battery systems (Tesla Powerwall, Enphase, FranklinWH) that back up the home instantly and silently, recharged by solar or the grid: the generator alternative with no fuel and no noise.