In terms of voltage drop, what is considered reasonable for branch circuits?

The recommended standard for voltage drop is that it should not exceed 3% for feeders and 5% for branch circuits. This guideline is established to ensure efficient electrical system performance while minimizing energy loss and maintaining voltage levels within acceptable ranges for safe operation of equipment and devices.

In practical terms, a voltage drop exceeding these percentages may lead to improper functioning of electrical devices and can increase costs due to energy waste. By adhering to these standards, electricians ensure that the systems they design and install operate effectively without unnecessary strain caused by excessive voltage loss.

The other options mention either more permissive drop limits or more restrictive ones that don't align with established practices for typical electrical installations.