Electric shock in terms of impact on the body can cause irreparable harm to a person. Since in every situation nothing definite can be said about a person and with every second of the flow of electric current through his body, the condition of the victim is constantly aggravated, then at any moment a lethal outcome can occur.
The skeleton is a reference to the concept of death, therefore such symbolism is intended to indicate the corresponding state. The image of a person who is being electrocuted as a skeleton is made for reasons that his condition balances on the verge of life and death.
However, it should be noted that the image of a person in the form of a skeleton during an electric shock is most likely , to the field of animation and cinema to enhance the effect of the drama of the situation. In practical electrical engineering, such designations are not used, the only thing that you can really meet is a skull pierced by lightning on signs indicating increased danger. Such an allegorical move is used to draw attention to the image and prevent possible consequences from a person being hit by electricity.
"It is not even accepted to depict a person who died from an electric shock as a skeleton". There are generally accepted (common, and in some cases, possibly approved by standards) images warning of high electrical voltages that are life-threatening.
In most cases, this is red (if the pictogram is colored) lightning, or red lightning piercing the skull , or a skull with bones and lightning nearby. Skull is a symbol of a deadly danger. It is also present on packaging with poisons.
But in the form of a skeleton in cartoons, comics, etc. really depict a person, but who did not die, but is exactly under the influence of an electric current. As a rule, it is also depicted as glowing or sparkling. All this, of course, does not correspond to reality at all.
Under the influence of a sufficiently high voltage, a person may experience a convulsive muscle contraction along the path of the current. If involuntary movements do not free the person from the action of the current, then, depending on the path of the current, this can lead to cessation of breathing and heartbeat (This is if the current passes through the chest, since the muscles are contracted and do not relax). With even longer exposure, the current heats up the tissue. And now, depending on the strength of the current, it will be possible to observe steam, and subsequently even charring. The tissues are most strongly affected in the places of contact with the conductors, as well as in places, roughly speaking, "where it is thinner." But to get down to the skeleton is simply unrealistic.
Well, in order to dilute this gloomy picture with at least some optimism, I will cite at last an anecdote on life safety: - Ivanov, look at this poster and tell me what to do if a person is electrocuted? - Finish off with a shovel with a wooden handle.
A person who died from an electric shock very often cannot be distinguished from a simply sleeping person. The skeleton is an allegory of death used on posters warning of hazards, particularly high voltage.