This section requires you to support conductors in panels to keep them in place. You're permitted to use wiring channels if they're made of a flame-retardant insulating material. If you're working with back-connected control panels, you must provide access doors or swing out panels that swing about a vertical axis. Multiple-device control panels must have terminal blocks or attachment plugs and receptacles to terminate and connect all outgoing control conductors.
The dedication of panels by power class is the most efficient measure to obtain an excellent “EMC” result. Moreover, separate routing of disturbing and sensitive cables ensures minimum coupling.
D-42 - Engine Wiring Diagram Specialist
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