Re: "digital electricity" technology
Railway signalling has a lot of antiquated, grandfathered electrical equipment, and one of the standard equipment voltages we use is 110V DC.
When you open a signalling equipment cabinet built prior to the 1990s, you can guarantee that there will be an unshielded exposed terminal block inside and will have busbars ranging from 24 to 140v DC, up to 110v AC and even in some areas, a poorly shielded 650v AC terminal (though these are being replaced with new Functional Supply Points in separate and far more modern adjacent cabinets as they are lethal).
If I had a pound for every time I’ve inadvertently made contact with the 110v busbar, either AC or DC, I wouldn’t need to still be out there maintaining the things.
We do have gauntlets and stuff of course, but have you ever tried to handle a 2Ba nut wearing a latex gauntlet? Also, the option to completely power down the cabinet to work on it is rarely available, thanks to the need to keep trains running.
I’ve often described the sensation of an electric shock as not being painful (at those levels), but the most aggressive tickle you’ve ever received.