Dedicated power

builder3

I’d have to say that the big difference is probably that in the U.S., the flooding very often comes hand in hand with some very serious storms. These would be the occasions that people might be without power for extended periods ... Most (all?) of the events with extended outages in the U.S. have been the result of horrific storms, hurricanes, or tornadoes with winds in the 130-200mph range, and often rainfall measured in feet.

Nope. I live in an area not especially subject to those conditions and when we lose power it’s not uncommon for the outage to last for two weeks. (To be fair, sometimes it's "only" for two or three days.) The poles and equipment that feed my neighborhood - which has underground service - often date to the mid-40s, according to the crews who repair the work. When repairs are made, the replacement poles and other equipment is to the same spec as the equipment that failed, so it’s sure to fail again. If the electric utility does upgrades in my state, it’s never in my neighborhood. State regulators make promises but can’t show results.

My electric utility also suffers from other performance problems, but that’s a bit OT. Many of my neighbors and I consider our electric service to be of third world quality and these power problems have resulted in deaths more than once. It’s pathetic.

invalid

What's with this on the same phase advice, residential electric service only has one phase it's a split single phase.

In the US, residential electric service is 240VAC, which is achieved  using two 120VAC lines that are 180 degrees out of phase with each other. When someone suggests keeping equipment "on the same phase," they mean connected back to the service panel to the same 120VAC leg.

In many jurisdictions, a 30A line will require a receptacle rated at 30A, and that won't be compatible with the 15A or 20A plug you'll find on your component. In any event, I'm not aware of any amplifier that requires a 30A line.