Generator inlet and cord matcher
Pick the outlet on your generator and get the inlet that matches it, the cord wire size for your length, and what the connection can safely run. Every step is shown. The inlet must connect to the house through an interlock kit or transfer switch, never a double-ended cord.
Basis
2023 NEC. Cord conductors: Table 310.16, 60 C column, copper, rounded up to the next size. Real flexible cords are rated by their printed label and Table 400.5(A); this figure is a conservative planning number, so buy a cord whose label covers the connector rating. Voltage drop uses Chapter 9 Table 8 resistance and a 3% target. Continuous load is limited to 80% of the connector rating. Limits are 30 A at 240 V = 7,200 W (5,760 W continuous) and 50 A at 240 V = 12,000 W (9,600 W continuous). Outlet shapes follow NEMA configurations; check the generator manual for the exact connector. No prices are shown; compare inlet kits, cords and interlock kits from a few sellers.
Next: inlet breaker and wire size, interlock or transfer switch, check an electrician quote, what a 30 A hookup runs, what a 50 A hookup runs.