I recently bought a heavy duty PSU for some heavy load tests. It says it can deliver a constant 40 Amps @ ~16V DC, so I thought we'll see and decided to put it to the test, so far it has passed without missing a beat !! I've seen 43 Amps @ 15V with the load in the pics, the load being fencing wire BTW, without the overload light coming on. I have to say that so far I am VERY impressed !!!!!