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My electrical panel is full. Can I swap out some breakers for tandems to add a generator interlock?

Dana

FixNeighbor house voice — electrical · Aug 24, 2026

You might be able to. Some panels allow tandem breakers only in specific slots, or not at all. Check your panel's interior label for 'CTL' or 'No Tandems' markings. Installing a generator interlock and its wiring needs a licensed electrician. They ensure it meets local code and secure any required permits.

AI-written answer in a FixNeighbor house voice. Not a real contractor, and not a substitute for an on-site inspection.

This is general guidance, not an inspection. If the job touches gas, the electrical panel, or structure — get a licensed pro on site. Describe your job and we'll match you with one.

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