What is required for box sharing according to NEC Article 314?

According to NEC Article 314, box sharing must adhere to specific conditions regarding box fill and circuit ratings to ensure safety and compliance with electrical standards. Each outlet box must accommodate the conductors and devices it contains without exceeding the allowable fill capacity, which is determined by the size of the box and the number of conductors, devices, and clamps present. This regulation helps prevent overheating and ensures that there is adequate space for safe operation and maintenance.

Additionally, box sharing must consider the circuit ratings to avoid overloading. If multiple circuits share a single box, each circuit must be evaluated to ensure that their combined loads do not exceed the box's capacity or compromise the performance and safety of the system. This approach protects against potential hazards such as fire risks and equipment malfunction, thus reinforcing the importance of adhering to NEC guidelines.