When working with simple 110v cords, such as lamp cord, where there is only two wires, I know that the small spade is the hot.
Some of these cords have an identifying "rib" molded into the outer covering. I have always thought the "rib" was to identify the "hot", however I have recently found that it is "neutral" on the last few I have dealt with.
Is there a standard rule?
I told you it was a simple question