Schematics show you where a wire begins and ends. Wire ducts with no covers so people can ‘trace’ wires is a sign that either a) they don’t know how or can’t be

Schematics show you where a wire begins and ends. Wire ducts with no covers so people can ‘trace’ wires is a sign that either a) they don’t know how or can’t be bothered to read schematics or b) poor maintenance practices such as making modifications and not updating the schematics. Wire ducts are popular because they are faster to make a bundle and put it in a duct and not worry about exactly how it looks, but our panel shop is still zip tying wires in bundles that behind and end in the same general vicinity to keep the wire ducts tidy in large panel line ups - say 5 cells each 1m wide.