On a constuction site there was an extension cord. (not off the shelf) It was made with Hard Usage rubber cord, male plug on one end, and a 1900 with a Quad receptacle on the other. The AHJ is turning it down. He says the box is not used for it's intended use. Is this permitted on a constuction site? Or, must you use an off the shelf type cord? Thanks for the input. Good Day
