wrote:

... authority that says high voltage is safer than ...

Senile lloyd wants to know how high voltage is safer than low. Anyway, you apparently you never took the hospital electrician's advice of referring you to the NEC manual.

A taser is 50,000 volts. Thats high. The amperage there isn't a factor. A stun gun is 900,000 volts. That outta tell you right there that voltage isn't what harms. It's low voltage with higher amps that is harmful.

Talk to a physicist or a doctor your own damn lazy self if you want to know what of two voltages fits your satisfaction of what's safer.