Good Word Gary -

Years ago I wired a house for my brother-in-law. As I was buttoning up the panel I explained to him how it was labeled, i.e., "this one is the well house", and "this one is the garage plugs", etc.. He interrupted me and said, "this is the only one I need to worry about because it goes off before I ever touch anything electrical!" Of course, he was pointing to the 200 amp main breaker.

If you don't know (young or old) there's no crime in asking someone who does it for a living or is competent - especially where electric service is involved. Electrocution plays no favorites and it kills without conscious.