What is the term used when a source can be fed from two different primary sources?

The correct term for when a source can be fed from two different primary sources is "Dual feed." This term describes a configuration where two distinct sources are connected to a single load, allowing for continuous operation even if one source becomes unavailable. Dual feed systems are commonly utilized in electrical engineering to enhance reliability and ensure uninterrupted power supply.

The concept is particularly important in critical applications such as hospitals or data centers, where power reliability is essential. By having two separate feeding sources, if one fails or requires maintenance, the other can maintain the power supply without disruption.

The term "loop feed," while referring to a system design, does not specifically indicate feeding from two different primary sources. "Hoop feed" is not a widely recognized term in this context, and "redundant feed" generally encompasses broader concepts related to backup or secondary systems but is not the standard terminological choice for this specific scenario.