Which of the following is NOT a requirement for the clearance of resistors from combustible materials?

The requirement for the clearance of resistors from combustible materials is crucial for ensuring safety in electrical installations. The correct answer indicates that a clearance of 10 inches is not mandated. In many cases, the minimum clearances are often specified to prevent overheating or fire hazards associated with the heat generated by electrical components.

When assessing the minimum clearance requirements, options such as 12 inches, 8 inches, and 6 inches are typically more aligned with safety standards. These distances are often established based on the potential for heat dissipation and fire prevention. The specified clearances serve to reduce the risk of combustible materials igniting due to direct contact or excessive heat.

Thus, the selection of 10 inches as an incorrect requirement highlights that established codes and regulations might specify either greater or lesser clearances, ultimately ensuring that safety standards are met.