Must the ampacity for service-entrance conductors be at least equal to the maximum load being served after adjustments?

The requirement for service-entrance conductors to have an ampacity at least equal to the maximum load being served after adjustments is essential to ensure safety and reliability in electrical installations. This means that all factors that can affect the conductor's capacity—such as temperature, conductor bundling, and the use of insulation—must be taken into account.

Ampacity refers to the maximum amount of electric current a conductor or device can carry before sustaining immediate or progressive deterioration. If the conductors are not adequately rated after making these adjustments, it could lead to overheating, insulation damage, or even fire hazards.

In essence, ensuring that the ampacity meets or exceeds the maximum load, after considering all necessary adjustments, protects the entire system from potential overloads and ensures efficient operation. This principle is fundamental for maintaining both compliance with the National Electrical Code and for upholding safety standards in electrical installations.