Which method is NOT adequate for separation of propulsion system conductors?

The method of bundling conductors together with insulation is not adequate for separating propulsion system conductors due to safety and performance concerns. In electrical systems, especially in marine applications, it is crucial to ensure that conductors are separated to minimize the risk of electromagnetic interference, heat buildup, and potential short circuits. Bundling without proper spacing can lead to insufficient heat dissipation and could affect the performance of each conductor, particularly under load conditions.

In contrast, using a dedicated conduit provides a physical barrier and protects conductors from environmental factors, while partitioning them in a tray allows for organized arrangement and maintains separation to manage heat and interference. Fixing conductors to a surface while allowing space helps ensure they do not touch and are properly ventilated. These methods maintain the integrity and performance of the electrical system, which is essential for safe operation.