This is not a 270a welder, with it set to the max it is roughly 150a on a 240v supply.
Overall it's decent, my biggest complaint is when adjusting the amperage or wire speed there is a one second delay in the screen changing after turning the knob which makes it hard to set to the desired position.
The other problem is, when set to 270a it only outputs 150a, so setting correctly is a total guess, no longer can you follow the guidelines on the internet for easy setup.
Just be aware that this is a 150a machine before you buy it.