turnbowm,
Still, your explanation reminded me of an icon that my portable cassette player had. Two squares, smaller inside the bigger one, which was to imply it was double insulated. Having disassembled that mean machine many times, I do not think it was really "double-insulated", but it might have been constructed in some way that it was not easy to electrocute self. Unless opening it, of course.
https://commons.wikimedia.org/wiki/File:Double_insulation_symbol.svg
"Equipment that is double-insulated does NOT require a connection between chassis and earth ground. In such cases, a 2-pronged power cord is perfectly acceptable."I thought it clarified it to me, it seemed logical and simple. Reading rest of the repsonses, I got lost.
Still, your explanation reminded me of an icon that my portable cassette player had. Two squares, smaller inside the bigger one, which was to imply it was double insulated. Having disassembled that mean machine many times, I do not think it was really "double-insulated", but it might have been constructed in some way that it was not easy to electrocute self. Unless opening it, of course.
https://commons.wikimedia.org/wiki/File:Double_insulation_symbol.svg