If I shut off the both meter/mains and then go from the case to the water/ground below and get a reading of 30Amps don't you think that should be POCO's problem??
If you're getting an amperage reading, that means there is a
load someplace that wasn't shut down... Might check that a pole of one of the disconnects isn't siezed/fused closed. If you meant volts, then that difference in potential between the metal equiptment casing and the ground rod, water pipe or whatever you're measuring to is a bonding issue. Chances are you have a bonding jumper/bonding screw, etc. missing or corroded. Your equiptment casing and bonding wouldn't typically be a PG&E issue, unless youre in equiptment that they supplied.
