Why is it crucial to properly size a conduit in electrical installations?

Properly sizing a conduit in electrical installations is vital primarily to prevent overheating and ensure a safe wiring installation. When a conduit is too small for the number and size of conductors inside, it can restrict heat dissipation, leading to elevated temperatures. Excessive heat can cause insulation to deteriorate, increase the risk of electrical faults, and potentially result in fire hazards. Therefore, a correctly sized conduit allows for adequate airflow and reduces the risk of overheating, contributing to the overall safety and reliability of the electrical system.

In addition, a properly sized conduit also allows for easier pulling of conductors, which helps to avoid damaging insulation and ensures that wiring remains in good condition. While accommodating future upgrades and aesthetic considerations might be important, the primary focus when sizing conduits should always be on safety and the effective management of heat generated within the electrical system.