The idea that 220 was trying to express was that since some people do this as a living that untrained help, even tho well intentioned, will slow them down. Also if they do something that needs to be redone it will cost additional time.
I am a carpentry/construction teacher, and we are building a model stud wall home in the classroom. I would like to teach my students to bend conduit and install it to wire up an outlet. Can anyone provide some tips for doing this? Thank you