>>>> "Kevin" == Kevin Handy
<kth at srv.net> writes:
Kevin> Grounds are usually local to the building they are in.
Kevin> Grounds are often done using a metal post hammered into the
Kevin> ground (hence the name). The ground is not supplied by the
Kevin> power company. Two buildings can each be properly grounded,
Kevin> but their grounds can be at different voltage levels.
Certainly.
Kevin> Sometimes one building may have two different grounds. It gets
Kevin> fun where the outlets in one wall are grounded to one side of
Kevin> the building, and another wall is grounded to the other
Kevin> side. It's a good way to fry equipment.
More importantly, it's a hazard to people. And it's a violation of
the electric code. Yes it happens, and my point applies: you'd want
to fix it before someone gets hurt.
I remember hearing that this happened at one of DEC's buildings, and
one of the computer rooms had this wiring issue. It melted the big
"welding cable" ground straps that are used on RP04 class disk drive
cabinets.
paul