What Size Generator Do You Need for GenerLink?

Choosing the right generator size for GenerLink is more specific than just picking a wattage. You need to match both the wattage range and the outlet configuration to your GenerLink model — and avoid one critical incompatibility that trips up many buyers.

GenerLink Wattage Requirements

GenerLink transfer switches are compatible with generators in the 4,400W to 9,600W running wattage range. This applies to both 30-amp (MA23) and 40-amp (MA24) models, though the 40-amp handles the upper end of that range more efficiently.

Generators below 4,000 watts cannot reliably start most home appliances — particularly air conditioners and well pumps that have high startup (surge) current requirements. Generators above 9,600 watts exceed the rated capacity of the GenerLink and are incompatible.

30-Amp vs. 40-Amp: Which Model Do You Need?

The choice between MA23 (30A) and MA24 (40A) models is driven by your generator’s continuous wattage output:

• MA23-N or MA23-S (30A): For generators running 4,400W–7,200W. Requires an L14-30 four-prong twist-lock outlet.
• MA24-N or MA24-S (40A): For generators running 7,200W–9,600W. Requires an L14-50 four-prong twist-lock outlet.

If your generator is right at the boundary (say, 7,200W), the 40-amp model gives you more headroom.

The GFCI Problem — Read This Before You Buy

This is the most common compatibility issue that isn’t obvious from a generator’s spec sheet. Generators with full-panel GFCI protection are not compatible with GenerLink.

Full-panel GFCI models include internal lockout circuits that react to the neutral-to-ground bond required by GenerLink’s meter-socket installation. When the lockout triggers, the GenerLink cannot transfer power — even with a running generator. Many newer contractor-grade generators from brands like DeWalt, Craftsman, and some newer Generac models include full-panel GFCI as standard. Always verify before purchasing.

Compatible Generator Brands

When the wattage, outlet, and GFCI requirements are met, GenerLink works with generators from all major manufacturers: Generac, Champion, DuroMax, FIRMAN, Westinghouse, Honda, Briggs & Stratton, Kohler, and many others.

Next Step: Check Your Utility Approval

Generator sizing is just one part of the equation. Before purchasing a GenerLink, confirm your utility company has approved it for use in your service area. Use our Utility Approval Checker to verify in under a minute.