What is the recommended maximum voltage drop for feeders according to the Code?

For feeders, the recommended maximum voltage drop is 3 percent according to the National Electrical Code (NEC) guidelines. This standard is established to ensure that electrical systems operate efficiently and safely. Excessive voltage drop can lead to voltage levels at the load that are significantly lower than intended, which may result in equipment malfunction, increased energy costs, or even damage to electrical devices.

The 3 percent guideline specifically applies to feeders to maintain a balance between efficiency and performance. It allows for adequate voltage supply while still ensuring that losses in the system remain within acceptable limits. This value is based on practical applications and historical data regarding performance and reliability in various electrical installations.

Understanding this standard is crucial for electricians to design systems that will perform well and comply with safety regulations, enhancing the longevity and effectiveness of electrical installations.