What is the recommended maximum voltage drop for feeders as stated in applicable codes?

The correct answer reflects the industry standard recommendations for voltage drop in electrical systems, particularly for feeders and branch circuits. Specifically, codes typically advise that a maximum voltage drop of 3 percent is ideal for feeders. This ensures that electrical equipment receives sufficient voltage to operate effectively, preserving both performance and safety.

Furthermore, the total voltage drop, which includes both feeders and branch circuits combined, is recommended to be no more than 5 percent. This total accounts for losses throughout the entire electrical system: from the source to the load, ensuring that voltage remain within acceptable limits that do not compromise the operation of electrical devices.

This guideline is critical because excessive voltage drop can lead to reduced efficiency, overheating, and equipment malfunction. By adhering to these recommended limits, electrical contractors can ensure that installations are not only code-compliant but also reliable and efficient in their operation.