Another big can of worms.....but any voltage above 50 to 60V ac is considered dangerous to your health. ( ie; may kill you )
Would I rather be hooked up to 110V compared to 240V......hell yeh, but I'm not sure I would live to tell the difference ??
Yep, a lot of variables involved. How dry are your hands (sweaty etc), how thick and calloused is the skin where it contacts the voltage. Whether the current path is across your body, or just across a couple of fingers.
Worst shock I ever got was disconnecting something in an aircraft, many years ago. 115V @ 400Hz, but I was laying full length on the metal floor, and was covered in sweat at the time. That bl@@dy hurt.
Been bit by 240V mains a couple of times (knocked me on me bum, both times). One of those times was in a customers lounge room. I went to pick up a TV that had stopped working, and as slid my hand down behind the cabinet, to unplug it, boom, and I was seeing stars. Their bloody pet rabbit had chewed through the power lead, exposing bare wires. How the rabbit didn't get killed I don't know. The woman says "You nearly gave me a heart attack then"
Been bit by 25,000VDC heaps, when working on old TVs and Radars (quickest way to wake you up in the morning LOL) Probably the worst one that scares the crap out of me, is people trying to fix their own Microwave ovens. About 5,000 volts available at a pretty decent current. And I've had a few people try to buy fuses off me to do it, but refused to sell to them.
As for voltages that are considered a danger to your health, that's why they fit VRDs to welders in workshops these days. To drop the welder's unloaded terminal output below 35VDC, and 25VAC.
