Yep - the meter reads 0.0 when I touch the two leads together. On Thu, Mar 31, 2016 at 6:27 PM, Chuck McCown <[email protected]> wrote:
> Depends on the meter. Does the meter read 0.0 when the leads are shorted > together? > Some meters have some random fluctuations in the least significant digit > all the time. > > *From:* Josh Baird <[email protected]> > *Sent:* Thursday, March 31, 2016 3:24 PM > *To:* [email protected] > *Subject:* [AFMUG] Another ground question > > I'm working on a new DC enclosure (steel 19" rackmount cabinet). When > using a DC volt meter, and putting the 'red' lead on a common ground point > (my ground bus, a metal rack rail, etc), and the 'black' lead on something > metal, I'm seeing ~0.1V. > > I'm assuming this is bad. On the bench currently, I have the AC ground > connected to my PSU. I have all other devices (switch, surge suppressors, > rack rails, etc) tied to a common ground that isn't yet connected to > earth. My PSU and power distribution is on a metal DIN rail which in turn > is mounted to the metal rack rails. > > Should I be concerned with this? As much as I try (or not), I still have > trouble wrapping my head around ground/ground potential/etc. > > Josh > > >
