I made 10ga cord extensions with "clothes dryer" plugs and caps. Connected to our sources - both house and generator power - of 240VAC, the voltage at the far end is still over 230VAC at full load of 22A for the stick welder, 21A for the Miller 175A MIG and even less for the Hypertherm 30Air plasma cutter.
Of course the only one of them that gets extensions on the business end is the stick welder. I made up 2/0 welding cable extensions with Dinse ends for those times when the 10' factory-provided leads don't reach. Unless it's a small project on the table I frequently use the extensions just to make sure I don't need to move the machine around.
It'd be neat to have a 1 ton weld truck set up with an autocrane, Miller Bobcat, Hypertherm Powermax 165, yada yada, but I'm a Harry Homeowner / tractor user / tinkerer and the equipment I have exceeds any of my needs. But don't mention that to Wifey
EDIT TO ADD: I couldn't survive in an HOA community. HOA Representative Brenda Busybody certainly wouldn't like my response to any of their recommendations.