Aram, Where to you live? In North America, UK, ....?
Building wiring conventions are different in different places. but in general your system, taken as a whole needs to be connected to exactly ONE ground reference. No more no less. The best way to place a bolt some place and define that is "The Ground" If you have 30+ volts AC on a ground pin on an outlet you have a problem that needs to be looked at by a good electrician. It should never be that high. Some cases are thinks like corosion and loose connections. One cause I that think of is that in some older buildings they were allowed to use metal conduit as the ground connection. Works OK at first but meta conduit rusts ofter time. Now day we are required to pull a group cable On Fri, Mar 23, 2018 at 2:04 PM, a k <pccncmach...@gmail.com> wrote: > hi > i reassemble my lcnc mill, and i found that axis move by them self. > i think it is something to do with static electricity. > i found ground - and when grounded lcnc body of machine - breaker turn off. > i measure with dc voltage between machine and ground 2. vdc and when i > measure ac voltage between lcnc machine and ground it was 35 v AC. > > i know that when use real ground like a water pipe and ground in outlet > there always will be current they always be 30 v ac. > can it cause problem? > > thanks > aram > ------------------------------------------------------------ > ------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Chris Albertson Redondo Beach, California ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
