Being closely involved with the electrical/electronic industry I think there is already way too much 'regulation' and emphasis on "things that create the illusion of safety"

Realistically stay away from mains related stuff unless you are competent and/or trained and if in doubt DON'T do it - seek assistance.

Along the same lines of labeling and 'safety' - I wanted to use this label on my laser machines but my wife wouldn't let me: