I turned up some of my own by accident when I was given the below as change sometime recently.
To my complete suprize and delight, there is a name for that interesting icon seen on electrical distribution physical plants: Mr. Ouch!
I had seen the icon around on various obviously electrical objects in my life, but I never really thought about it. Per the sources cited by WikipediA, it is from at least 1982, possibly earlier.
To me, besides being interesting of itself, it is another example of the depth of planning that went into a thing I just assumed more or less appeared out of thin air. This, for someone trained in engineering, is an embarrassing and improper approach to life.
A reader contributed this to my “InExOb” collection.
First of all, the quotes should be on the onomatopoeia. Secondly, what was the need of this? Do they have something else that might be mistaken for the alarm? If so, why?
Tangent: this reminds me of the time I stayed at a hotel in Ohio. They posted the relevant except from the laws of the state about hotels, which clearly hadn’t been updated in a century or so because they contained a reference to the “ladies waiting room”.