Cords Above Ceilings, Parking Lot Lighting and More

摘要

Our company recently renovated a local high school. We installed branch circuits and multimedia projectors in the classrooms. The drawings showed a specific detail of the support structure for the projector secured above the ceiling with a receptacle located on the support structure. The detail showed the power-supply cord being routed from the projector through a tube in the support to access the receptacle above the ceiling. The installation was flagged in the final electrical inspection, and we had to cut receptacles into the ceiling so the power-supply cord is plugged in below the ceiling. We have found many conflicting interpretations in our Internet research. In my opinion, the NEC is not clear on this. Are cords of all types prohibited above ceilings?