What condition must be met for the feeder conductors to carry the total load supplied by service-entrance conductors?

For feeder conductors to effectively carry the total load supplied by service-entrance conductors, it is essential that their ampacity matches the total load. Ampacity refers to the maximum amount of electrical current a conductor or device can carry before reaching its temperature rating. If the ampacity of the feeder conductors is lower than the total load, it can lead to overheating, potentially causing insulation damage, decreasing the lifespan of the conductors, and increasing the risk of fire.

Sizing the feeder conductors appropriately ensures that they can handle the maximum expected load without being subjected to excessive current that could compromise their safety and functionality. It also aligns with the National Electrical Code (NEC) requirements, which dictate that conductors must be sized based on the load they are expected to carry in order to maintain a safe and effective electrical system.

The other conditions, while important in their own right, do not directly address the specific requirement of carrying the total load. For instance, having good insulation ratings is vital for preventing electrical shorts and ensuring safety, but does not alone guarantee that the conductors can handle the necessary load. Similarly, while feeder conductors should indeed be sized to account for maximum demand and can be installed in various conduits, these factors alone will