Originally Posted by
john-100
without details of your machine
I guess it will have a 150W power supply for the stepper drives
assuming only 50% of the power to the laser control produces the 50W of laser light , your machine requires 250W input
a 20mm 1A fuse if your mains is 240V or 2A fuse if you have a 120V supply will be the minimum fuse size to try
as the stepper drivers and laser are powered by switch mode supplies that take a large surge current at switch on
you may have to use fuses four times the above values to avoid nuisance fuse failures
4A for 240V or 8A for 120V
John