All conductors of the same circuit must be installed in which manner?

All conductors of the same circuit must be installed in the same raceway or cable to ensure proper operation and reduce the risk of overcurrent or imbalanced electrical conditions. This practice facilitates easier identification and handling of the conductors, which makes troubleshooting and maintenance more straightforward.

When conductors are housed together, they can share the same physical pathway, which helps to maintain consistency in thermal characteristics and minimizes electromagnetic interference between them.

Moreover, installing them in the same raceway or cable helps adhere to the NEC requirements regarding conductor grouping, which is essential for safety and performance. This grouping also prevents concerns related to voltage drop and ensures that all conductors follow the same route back to their respective electrical source, maintaining the integrity of the circuit design.

In contrast, using separate paths—like separate trenches, individual insulation, or perpendicular raceways—would create complications in terms of electrical performance, require additional space and material, and potentially lead to safety hazards. These methods do not support optimal circuit performance and can obscure the identification of circuit faults.