Generator Interlock Systems

Portable generator power—wired the safe way.

A generator interlock system lets you power chosen circuits through your electrical panel using your portable generator—without dangerous “backfeeding” and without running a maze of extension cords through doors and windows.

A picture of Generator Interlock Systems with Brotherlylove

Licensed & Insured • 100% Satisfaction Guarantee • Houston + DFW Service • Master #318265 | Contractor #32701

  • Licensed electrician installation (panel interlock + inlet + breaker)
  • Use your portable generator—or choose a full package with generator included
  • Power the circuits you care about: fridge, lights, outlets, Wi‑Fi, and more
  • Clear labeling + walkthrough so you know exactly what to do during an outage
  • Code-focused workmanship with permits/inspections coordinated when required

What an interlock does

A generator interlock is a mechanical safety device installed on certain electrical panels. It prevents the main utility breaker and the generator backfeed breaker from being ON at the same time. That lockout is the whole point: it helps keep generator power from energizing utility lines and keeps your home’s power source selection controlled and intentional.

Interlock system = panel interlock kit + generator inlet (outside plug-in) + dedicated generator breaker + correct wiring + labeling + testing.

A picture of Generator Interlock Systems with Brotherlylove
A picture of Generator Interlock Systems with Brotherlylove

Choose the setup that fits your situation

Option 1: Interlock Installation Only

Best for: You already own a portable generator (or plan to buy one yourself).

We handle: Compatibility check, inlet placement, correct breaker/interlock selection, wiring, labeling, testing, and a hands-on walkthrough.

Option 2: Full Interlock Package (Generator Included)

Best for: You want one contractor, one plan, one complete solution.

Includes: Portable generator selection + the complete interlock system installation + startup guidance and safe operating basics.


Need help picking the right generator size? We’ll match generator output to the circuits you want to run and how you actually live during an outage.

What we install and verify

  • Electrical panel compatibility assessment (space, breaker type, panel model considerations)
  • Correct interlock hardware matched to your panel (when compatible)
  • Outdoor generator inlet installation (weather-rated, properly located)
  • Dedicated generator breaker + correct conductor sizing
  • Proper labeling (panel markings + operating labels)
  • Operational testing (confirm the interlock functions correctly and panel behavior is as expected)
  • Homeowner walkthrough: how to transfer power safely, what loads to avoid, and best practices

Not every panel can accept an interlock. If your panel isn’t compatible, we’ll recommend the safest practical alternative (such as a manual transfer switch or a panel upgrade if needed).

Standby generators are amazing (automatic, whole-home, hands-off), and they’re also a bigger investment. Interlock systems are a popular middle ground.