What’s the difference between a heavy duty (12 gauge) extension cord and the 12ga wiring inside the walls of a typical north American home? Why can’t you just chop the ends off and use it to wire up an outlet?

Question

What’s the difference between a heavy duty (12 gauge) extension cord and the 12ga wiring inside the walls of a typical north American home? Why can’t you just chop the ends off and use it to wire up an outlet?

In: 250

Answer 1

I’m curious about the inverse, if any of the electricians here can confirm or deny whether you could use wiring designed for internal use as an extension cord? I assume there’s some similar code limitations but curious what exactly they are.