When making these last minute decisions, there are 5 typical mistakes that an engineer can make. First, the wrong NEMA rating for their application is chosen, second, an enclosure composed of an incorrect material is chosen, third, an enclosure that is not of the proper size for their needs is chosen, fourth, appropriate consideration is not given to the features that will assist them with their enclosure, and finally, consideration to how the enclosure will be modified for use is overlooked.