NCIDQ IDFX Practice Exam

What term describes a connection indicated in a one-line diagram that shows the relationship between circuits and a panel box?

1. Power junction

2. Connection point

3. Home run

4. Feed line

The correct answer is: Home run

The term that best describes a connection indicated in a one-line diagram, showing the relationship between circuits and a panel box, is "Home run." In electrical terminology, a home run refers to the wiring connection that originates from a circuit breaker in the panel box and directly feeds power to a specific load or device. This concept is crucial in understanding how power is distributed throughout a building, as a home run often indicates that the circuit's wiring runs directly from the panel to the device without any junctions or splits along the way. The use of this term in one-line diagrams helps convey clarity regarding the circuit's path and connections, making it an essential concept in electrical design and layout. Knowledge of how home runs function assists designers in ensuring that load calculations and circuit performance are effectively managed, leading to safer and more efficient electrical systems.