What is the minimum thickness of steel used for sheet steel boxes not exceeding 100 in.³ in size?

The minimum thickness of steel for sheet steel boxes not exceeding 100 in³ in size is indeed 0.0625 inches. This standard thickness provides the necessary structural integrity for the enclosure while balancing factors such as weight and cost.

When dealing with electrical enclosures, codes and standards dictate material properties to ensure safety and durability. For sheet metal applications like the construction of boxes, the specified thickness must support various installation environments and protect against mechanical stresses or environmental influences, such as corrosion.

Choosing a thickness that is too thin may result in insufficient strength, leading to potential failure in supporting cables or components inside the box. On the other hand, opting for a thicker material than required could unnecessarily increase the weight and cost of the enclosure.

Understanding these specifications is crucial for ensuring that installations comply with regulatory requirements and function effectively in the field.