Probably just shaky hands right when the camera snapped. Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373 On Mar 31, 2016 9:55 PM, "Jaime Solorza" <[email protected]> wrote:
> OK I will get a new phone... but first suffer > On Mar 31, 2016 7:49 PM, "George Skorup" <[email protected]> wrote: > >> Dude, get a new phone, my eyes hurt now. Sorry, just being honest. >> >> On 3/31/2016 8:31 PM, Jaime Solorza wrote: >> >> We do isolate them... >> On Mar 31, 2016 7:11 PM, "Adam Moffett" <[email protected]> wrote: >> >> Do you need to? We want them all to go to the earth eventually right? >> >> >> On 3/31/2016 7:38 PM, Jaime Solorza wrote: >> >> Are you isolating your DC and AC grounds? >> On Mar 31, 2016 4:44 PM, "Ken Hohhof" <[email protected]> wrote: >> >>> If the two pieces of metal are not connected together, like if one of >>> them is floating except for stray high resistance paths to ground, then I >>> wouldn’t pay much attention to the voltmeter reading. Especially if you >>> are using a high impedance digital meter. >>> >>> Or if they are connected via a wire carrying high current, 0.1 volt may >>> not mean much. If you have 10 amps flowing through a wire with 0.01 ohms >>> resistance, there’s your 0.1 volt. >>> >>> If that second piece of metal is grounded to your common ground point >>> with a wire that should not be carrying any current, then I might worry >>> about the 0.1 volt. You might have a ground loop. >>> >>> Are you seeing a DC or AC voltage? >>> >>> >>> *From:* George Skorup <[email protected]> >>> *Sent:* Thursday, March 31, 2016 5:32 PM >>> *To:* [email protected] >>> *Subject:* Re: [AFMUG] Another ground question >>> >>> That's what i was going to say. If it's a cheap meter, don't worry about >>> it. Bond everything and you should be fine. >>> >>> On 3/31/2016 5:27 PM, Chuck McCown 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 >>> >>> >>> >>> >>> >> >>
