Why is proper conduit sizing important in electrical installations?

Proper conduit sizing is crucial in electrical installations primarily because it ensures adequate protection for wires and prevents overheating. When conduits are correctly sized, they provide enough space for the conductors to be housed without excessive crowding. If wires are cramped, it can lead to increased resistance and heat buildup, which poses a risk of insulation failure and electrical fires.

Moreover, appropriate conduit sizing allows for better airflow around the conductors, which helps to dissipate heat more effectively. In addition to preventing overheating, correctly sized conduits also protect the wiring from physical damage and environmental factors, ensuring the longevity and safety of the electrical system.

The other options, while they might touch on aspects of electrical installations, do not address the primary function of conduit sizing, which is to maintain safety and integrity in electrical systems.