cbennettmegco
New member
An installation has four enclosed dry type transformers in an electric room. the transformers are 480 volt and the distance between the front of one unit and the rear of the next is 35 1/2 inches. The enclosures have sprinklers and ducts located within six feet of the tops of the units. The transformer doors are labeled with arc flash warning stickers which I would assume mean that the manufacturer thinks that they may be opened while energized. should these transformers have work space as required (NEC 110.26), and dedicated space above them (NEC 110.34) , or are they compliant as they are installed?