1: clear instructions and diagrams
With the electrical wiring around homes and commercial buildings, I'd always wondered about the governing standards used by electricians. How safely did they really do things? So it's reassuring to read this update of the US electrical code. The diagrams are well done, in colour. The clarity of the schematics and of colour photos of equipment like fixtures is commendable. Clearly, the authors are aware that the background of readers will vary widely. Some might be journeyman electricians, who will need clear instructions and diagrams.
The text also demonstrates that the NEC codes are quite thorough. And, as the narrative makes clear, never complete. Every year, revisions are made. While this might not be the computer field, driven by endemic change and obsolescence, here too, innovation happens.
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