Split from stealthy's thread. dvdhawk has informed me that our rig draws almost 8A at theoretical maximum load (cheers). This reminded me that, last Sunday, during the sermon, both PCs and the mixer died simultaneously. I figured it was a power problem. I'm convinced the surge protector that it's all plugged into is fused at 13A so even 80% of that would be enough. Also the system was nowhere near full load. The heating was off at the time and I'm sure it didn't kick in then. Any glaring culprits or anything I should watch for? (other than speaker failure) Hopefully we can prevent any more speakers going pop, or as a member of the congregation thought, "a bomb went off".