It's these jack-legs that are in "the trade" that make me have a bit of distrust in New York City electricians. I really hate to say this.
I've seen some of the work that some of these people do....and it ranges from little details like not wrapping up a receptacle with tape, to not fastening a locknut all the way onto a box connector; to totally using the wrong connector for the type of cable that is being run (e.g. using a romex-only type clamp for fastening BX - and omitting the 'red devil' so the wires are rubbing up against the sharp edge of the armor).
