My electrical/electronics knowledge has a lot of gaps, so I hope you’ll bear with me I’m in the UK, and I’ve got a K40 with a MYJG40W PSU. I replaced the 2-pin power cable that came with it (laser to wall plug) with a proper 3-pin kettle lead, and comparing what I see inside to a guide online it seems to be properly earthed through that power lead. It has two 2-pin power outlets on the back, one of which I run the pump off.
My question is: I’m adding an air assist unit with two 12 volt DC fans (and may in the future add another fan to create positive pressure, more lights etc) - am I best to power them off the 24v output of the PSU with a voltage converter, off their own 12v power supply out of the other power outlet on the back (do those effectively just act like a power splitter off the mains?) or keep them completely independent of the laser cutter and use another wall socket? I’ve gathered the basic PSU isn’t up to much and I’m sure I’ve seen somewhere that it’s a bad idea to add more load to it…thoughts?