What is the minimum distance from the edge of a raceway to a box as required by the NEC?

The minimum distance from the edge of a raceway to a box, as outlined by the National Electrical Code (NEC), is established to ensure safe and effective installation practices. According to the NEC, maintaining a distance of at least 1 inch is vital to prevent obstructions or interference during installation and maintenance. This clearance helps avoid any potential damage to the wiring within the raceway as well as facilitates proper functioning of both the raceway and the connected box.

Stipulating this minimum distance helps electricians and contractors to have enough space for proper installation, allowing for the safe operation of electrical systems while reducing risks associated with overheating or physical contact between electrical components. The importance of this clearance reflects understanding of both electrical safety and best practices in construction and installation.

Other options suggest larger distances, which are not required by the NEC in this specific context, making 1 inch the correct and relevant choice based on the code's guidelines.