Of course you can run some wires at really low amperage. You knew that tho.
But when an employer puts a limitation on the equipment required, it's because he's seen what actually works well, and what doesn't work well, in that particular field.
Show up on a water line with a SA-200 and 125' of lead....they'll just chuckle at you. Show up on a mainline construction job with a vantage 500 and 600' of lead......... and they'll chuckle as well.
Different streaks for different freaks I say ; )
JTMcC.