Per post 1 the 20A supply which runs at just over 3 amps from a car battery in post 9.
I did not notice the question on wire run length, but it is only the 12" leads from the pump plus whatever 18" jumpers are needed to make the test circuit.
All of the circuits from post 14, where the capacitors were introduced have been started by turning on the power supply and then the pump. (even a most of the tests before that, though there isn't a post to indicate that). What happens, as soon as the switch is closed, the power supply shuts down, then turns on, then shuts down.
Testing under load requires getting the pump to start, which I cannot. I do not know and have not tested the pump under load.