Common NEMA Buying Mistakes
How hard can it be to specify the right enclosure? Of the many tasks required of design engineers, the selection of enclosure is typically considered simple. However, at Bud Industries we see smart engineers make common selection mistakes all the time. Often the cost of the enclosure is a significant share of the bill of materials, and getting it wrong leads to unnecessary cost. Sometimes poor choices introduce unnecessary delays. In the worse cases, the protection is inadequate, which compromises the success of the end product.
Terms like “waterproof,” “sealed,” “dust tight” and the like are used to describe electrical and electronic enclosures. Unfortunately, these terms are inherently ambiguous. Is the enclosure merely rain-proof or is it fully submersible? Is it sealed so that no air will transfer, or is it merely sealed against intrusion by objects?