How should feeder conductors be selected based on load calculations?

Feeder conductors should be selected based on an assessment of the total load and the adequacy of the conductors' ampacity. This approach ensures that the selected conductors can safely carry the expected load without overheating or failing. Ampacity refers to the maximum amount of electric current a conductor can carry before its temperature rises to an unsafe level, which is crucial for maintaining the safety and reliability of the electrical system.

Determining the total load involves calculating all the expected electrical demands on the system, including all circuitry and devices that will be powered. Once the total load is known, the conductors selected must meet or exceed the calculated current requirements to avoid overloading the system. Adhering to appropriate guidelines and standards, such as NEC (National Electrical Code) recommendations, ensures compliance and reduces the risk of electrical hazards.

Selecting conductors solely based on cost or aesthetics does not consider their performance or safety. Additionally, following manufacturer's recommendations without performing necessary calculations might lead to inadequate sizing of conductors, risking system integrity and safety. Focusing on load calculations and proper ampacity is fundamental in feeder conductor selection to ensure efficient functioning of the electrical distribution system.