Jbox with 4" entry conduit containing (4) mult-conductor cables of 2AWG conductors, feeding four motors via (2) 2" conduits. Jbox is 20"W X 24"H. Art. 314.28(A)(1)(2) show the box as being too small to meet code. Another inspector suggests that using section (3) i.e. labeling the box with a permanent marking will solve the problem. I understand section (3) to mean that the boxes or conduit bodies are suppose to be factory labeled as opposed to labeled in the field.
I'd like some clarification on this code section.