A fitting in a wiring system primarily serves what type of function?

A fitting in a wiring system serves a primarily mechanical function. This involves supporting, connecting, and securing various components of the wiring system to ensure they are properly positioned and protected while maintaining structural integrity. The mechanical aspect is crucial because it influences the overall durability and safety of the installation, as fittings help to manage physical stresses and facilitate correct alignment of wiring.

While fittings may indirectly impact electrical connections by ensuring that wires and terminals are properly secured and insulated, their primary role is not electrical. Instead, they are designed to handle the physical components of the wiring system without focusing on the electrical conduction or thermal characteristics directly. Other functions, such as optical or thermal, are not the main focus of fittings in a wiring system, making the mechanical function the most relevant in this context.