Just opened a new power supply. It has a 3 pronged plug for the wall, but only 2 connectors in front for + and - voltage, but none for ground. I used to have a mean well power supply that had the +, -, and ground inlets. I used to have my arduino ground plugged on that power supply ground, but with the new one that seems impossible. Is that a problem?
I'm controlling 14 solenoids and the power supply is for them. 13.8v at 10 amps. I guess I have no way to connect ground now? Wondering if I need to return his power supply and look for another one, then is it's exactly the voltage and amp requirements I need.