If the loose wire is hot, then the metal case is now hot, and anyone who touches it will get a potentially fatal shock.
The tank capacitors can remain charged for days with enough energy to deliver a fatal shock.
It would deliver a fatal shock were the wrong person to touch it.
This charge can cause dangerous, or even potentially fatal, shocks or damage connected equipment.
You also risk a fatal electrical shock if the mains electricity has not been disconnected.
At the time it was felt that 100 volts was not likely to present a severe hazard of fatal electric shock.
That would have been a second, perhaps fatal, shock.
To give him a drink was to kill him at once, as the liquid would rush through his perforated intestines and cause fatal shock.
It is wired to special vests that give increasingly powerful and fatal electrical shocks for failure.
These are probably decayed; there might still be some stored power in the central plant they could pick up and give us a fatal shock.