New G2 HP Prime

[grsbanks]

(09-05-2018 12:52 PM)Albert Chan Wrote:  

Quote:Is the US system safer? ABSOLUTELY NOT! First, what kills you is mostly Amps, not volts ...

With higher volts, more Amps passing thru the body ... I think high voltage is more dangerous.

It's not amps passing through the body that you need to worry about. Both 110V and 220V are potentially lethal. Neither one is safer than the other in that respect.

The point Cyrille was making was the current going through mains-powered appliances and the cables connecting them to the mains. For the same power consumption you have double the number of amps going through them, which means 4x the heat being generated by Joule effect, hence the higher fire risk.

Why do you think high power machinery is powered by a tri-phase supply?

(09-05-2018 12:52 PM)Albert Chan Wrote:  Why does US/UK use 110/120V and others use 220/240V

The UK most definitely does not use 110/120V. We use 240V over here.