On Sun, 8 Feb 2015 09:06:40 -0800 (PST), Len Ovens wrote: >It appears we have power coming from two power entrances with two >different earth grounds to the panels. I experienced potential difference for the ground in old buildings between two main sockets, less than 3 meters difference between those sockets, both fed by the same power, coming from the same fuse and connected to the same concrete-footing ground electrode. Even if the power should come from two different sources, one building should have one concrete-footing ground electrode for ground, so in theory there shouldn't be a potential difference. Buildings sometimes don't care about school books. _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
