What is the maximum allowable voltage drop on a branch circuit supplying sensitive electronic equipment?

The maximum allowable voltage drop on a branch circuit supplying sensitive electronic equipment is typically considered to be 1.5%. This low voltage drop limit is crucial because sensitive electronic devices are often more susceptible to performance issues and malfunctions caused by even minor fluctuations in voltage. Excessive voltage drop can lead to insufficient voltage at the equipment, which can degrade the performance quality and reliability of these devices.

Maintaining a voltage drop at or below 1.5% helps ensure that the equipment operates within its designed specifications, promotes longevity, and minimizes the risk of damage from under-voltage situations. While other voltages may be permissible for less sensitive applications, the 1.5% standard is specifically tailored for environments where equipment precision and reliability are paramount.