Gaaa! First off, some good intentions around here, but potentially lethal advice. NEVER DISCONNECT THE AC GROUND ON AMPS OR ON PA GEAR!!!! NO EXCEPTIONS! EVER! That's how people die.
Yeah, I know "everyone does it." It's still wrong, it can still kill you.
Step 1: Get an electrician to check the wiring up there!
Step 2: Get the entire band plugged into the same grounding path as the PA, or at least the same grounding path as the console that your mic connects to. If the church has the electrician come out for step 1, that would be a good time to take care of step 2 if some circuits need to be moved around. In a perfect world, all of the PA should be plugged into the same grounding path...but being in the same path as the nearest console will at least keep you from becoming a living light bulb.
If your gear is plugged into the same ground path as the nearest (in the signal path) console, then there won't be any difference in the ground potential between your gear and your mic...which means you get to live to play another gig.
-Mark
Yeah, I know "everyone does it." It's still wrong, it can still kill you.
Step 1: Get an electrician to check the wiring up there!
Step 2: Get the entire band plugged into the same grounding path as the PA, or at least the same grounding path as the console that your mic connects to. If the church has the electrician come out for step 1, that would be a good time to take care of step 2 if some circuits need to be moved around. In a perfect world, all of the PA should be plugged into the same grounding path...but being in the same path as the nearest console will at least keep you from becoming a living light bulb.
If your gear is plugged into the same ground path as the nearest (in the signal path) console, then there won't be any difference in the ground potential between your gear and your mic...which means you get to live to play another gig.
-Mark

look I know can't sing but at least humor me by putting me in the monitors 