How should the total load of a feeder be managed compared to branch-circuit loads?

Managing the total load of a feeder is critical to ensure that it can adequately support all connected branch-circuit loads without resulting in overloads or potential safety hazards. The appropriate practice is that the total load of a feeder should be equal to or greater than the sum of all branch loads it supports.

When the total load of the feeder meets or exceeds the cumulative load of the branch circuits, it indicates that the feeder is adequately sized to handle the electricity demand without tripping breakers or causing overheating. This is particularly important because branch circuits are designed to handle specific loads, and if the feeder is not capable of accommodating these demands, it could lead to inadequate power delivery or equipment failure.

The "equal to or greater than" stipulation helps ensure that there's a safety margin, allowing for fluctuations in load, which can arise from increased demand or unexpected load changes. Following this guideline enhances the overall safety and reliability of the electrical system, aligning with the National Electrical Code (NEC) standards and local regulations.