Recently, the question arose about using cords for temporary wiring. It was interesting to watch the reaction and response. It seems there are considerable inconsistencies relative to this subject.
Jim Dollard has an extensive background in codes and standards. If you have a query about the National Electrical Code (NEC), Jim will help you solve it. Questions can be sent to email@example.com. Answers are based on the 2014 NEC. Unsupported raceways