A generator inlet and a compatible panel interlock can provide a manual connection for backup power in suitable installations. The interlock is intended to prevent the utility main and generator supply breakers from being on together. It must be suitable for the exact panel and installed correctly.
Compatibility comes before cost
We review the panel, generator specifications, connection rating, grounding and bonding arrangement, and intended circuits. Some panels or generators need a different approach. Existing spare space does not establish compatibility, and a subpanel or other changes may be necessary.
Manage the available power
An interlock does not increase generator capacity or prevent every overload. The user must manage connected loads according to the system’s instructions. Large motors and appliances may exceed available power, particularly when starting.
What an estimate should cover
The inlet, compatible equipment, wiring route, installation access, permit requirements, and any panel changes affect the scope. We have removed an old generic price range because it did not account for these differences. Share your equipment model and goals for a project-specific assessment.
Portable generator safety
Fuel-powered generators produce carbon monoxide. Use them outdoors only, at least 20 feet from the home, with exhaust directed away from occupied buildings and openings. Never operate one in a garage, even with the door open. Follow the manufacturer’s instructions and CPSC generator guidance. Never connect a generator to a household receptacle to feed building wiring.
See battery and backup power planning or request residential service.