I'm building a large printer with a 12" x 36" build platform area. I've got 3 bed heaters which can draw up to 10A each. I purchased the Smoothie partly because the MOSFETs on it could handle the load… but now I'm looking at wiring it up and I have my doubts because the 3 MOSFET's are drawing current from the same input connection, and 30A would easily exceed the rating of the connection.
I could double-up and use both the soldered connection and the plug to supply power. If I did, would the board itself handle the current ? Or am I better off building external circuits to drive the bed heaters ? could I remove the MOSFETs on the board and relocate them onto their own board with dedicated power feeds ?