There has been several comments regarding provision in the NEC and other Building and Safety Codes.
Invariably,people would willy nilly use some provisions that they think would settle any ambiguity to settle any argument.
The truth is, if you search a particular NEC reference material, it specifically says that the NEC is to be used by properly registered or licensed professional to interpret any ambiguity. In some versions particularly the L.A. City Electrical Code the AHJ empowers the City Inspectors to have the final say.
Having said that, anyone who thinks that he is right just because he read it in the book is putting himself in a bad spot should there be any conflict. It may be different if you are a documented professional who they might listen to...not the regular Joe.
Wikipedia is not the ultimate resource--in fact some entries invite disambiguation if WIKI feels the contribution is flaky. Readers are bombarded with lots of useless information.
As one educator says:
A professor who recommends Wikipedia is like a dietician who recommends a steady diet of Big Macs.