Thank you Papabravo.If your power supply is powering a device with a metal chassis, you want that chassis at ground potential for safety. If there are no exposed metal parts then you don't need to worry about it.
Lower voltages are less of a hazard for contact with bodily parts, but a dropped tool can create some potential fireworks.Thank you Papabravo.
But this is true also for low voltages as those generated by a 0-30V dc power supply ?
Sometimes but, in practice, I rarely connect supply ground to earth ground.Are there any cases in which this ground connection is mandatory ?
This place has everything come on... I'll show you.Are there any cases in which this ground connection is mandatory ?
Very interesting link, I agree.Did you happen to take a peek at the link it's a very good read. It compliments and supports the information these good gentlemen have offered!
quoting post #7 of the link provided. I've no comments just yet, but earth, ground, and common are about the three most misunderstood words in all of the electrical world.
This discussion should be an eye opener.
by Jake Hertz
by Duane Benson
by Aaron Carman