Duct and Raceway Route Preparation
Before starting you should have prepared:
A 3D model of your panel and component layout, or plant device, instrument, enclosure [etc.] layout.
A summarised sketch of the topology of your raceway system (preferably an arterial system). This plan should not include minor detail. The purpose is to guide you.
A set of specifications for raceway components you are to use in the system.
You should consider the Route Connection Distances required when designing your raceway.