That is what i primarily use on the truck for fence and railing repair and installation.
Welding galvanized fence pipe.
A standard arc welder is undoubtedly the best way to weld galvanized steel.
Galvanized steel welds similar to uncoated carbon steel when properly prepped.
Your 4600 running watts generator will power a portable mig welder with 030 or 035 fluxcore wire at a plenty high enough setting to weld the pipe.
As long as the zinc oxide gets access to air to burn off.
Welding thick galvanized coatings or butt welds or welding creases or corners where the galvanization naturally builds up benefits from grinding the galvanization off first.
Arc welding is a versatile method that uses alternating currents to create a high heat arc that melts your flux.
Use an arc welder to weld galvanized steel.
If you can work outside when using an arc welder.