Good common sense should always prevail. Any damage to the cord should be repaired prior to use.
Saying this is like having a warning label on a gun barrel or on a pack of cigarettes.
A GFCI is very sensitive It will trip with the smallest amount of UN balanced circuit. It trips at 0.04 to 0.06 milliamps.
All it does is compare the amount of energy going in against what comes out.
Just to get a feel for what low levels it trips at you may feel 1ma at 4-6 the GfCI trips and at 10 ma you can still let go but at 15 ma you hang on and it goes on from there. Most of us will survive a encounter of 30ma. From there up amperage causes damage .Remember that electricity is harder on children than adults.
I won't bore you all any more.
I will say that in my 3rd year of apprenticeship school we had a slow night and the instructor showed us graphic safety films. I will never forget the reaction of some of the students Basically it was Why did you not show this 2 years ago? The next night there were 3 or 4 empty seats. Jted
Edited by jted - 9/1/15 at 8:58pm