None taken, but I'm afraid that you don't seem to know exactly what you're talking about either. Just because something CAN supply 100 amps doesn't mean it WIL

None taken, but I'm afraid that you don't seem to know exactly what you're talking about either. Just because something CAN supply 100 amps doesn't mean it WILL supply 100 amps. I can touch both terminals of my car's battery with my hands and very little happens. That's because V = I * R, V = 12 and R ~= 100k so I = 0.12 milliamps or 120 microamps. Now of course we're talking about 48V not 12V but that's still less than half a milliamp, unless of course you have both of your hands drenched in saltwater and you grab as much exposed wire as you can, in which case the body's resistance is going to be much less than 100k. But for any reasonable adult it's fairly difficult to kill yourself with 48V. Will people still need to be careful? Absolutely. But the idea is that at least at first, it's much easier to get around codes requiring permits and inspections and whatnot that make it much harder for individuals to do without explicit approval of the government (know how to file a permit? great. are you a certified electrician? sorry...). Given that in many places the government owns, regulates or otherwise has a substantial interest in the electrical utility company this at least temporarily would allow people to do this on their own. The laws could always change, but it tends to take a while at which point there might be enough people doing it that it wouldn't get passed.