The rules for service conductors and equipment for control and protection of services can be a bit overwhelming. A great way to get your bearings is to use Figure 230.1, which is basically a graphical guide to Art. 230 of the NEC. This figure tells you, for example, that the rules for service conductors are in Part IV. Just above the graphic itself, there’s a sequential (Part I, Part II, Part III, etc.) index showing what’s in each Part.
Something that makes this graphic