Brad, the NFPA is the organization that publishes the NEC but it is up to the local jurisdiction to adopt it into law. The NFPA is not responsible for the content of the NEC but 19 Code Making Panels and a Technical Correlating Committee write the Code. Proposals are submitted and the various Code Making Panels accept or reject those proposals.

The Panels are made up of various representatives from inspectors, NRTLs, manufacturers, utilities, labor, construction, etc. Each panel has a group of Article assigned to it so that the entire Code is covered and they deal with only those proposals that effect those Articles. There is a lengthy process to go through to get each proposal approved or rejected and then published.

After all that, it is up to the local jurisdiction to adopt the new Code or to make amendments to it. Indiana has several amendments so you have to be aware of what they are so you will not get a red tag for following the Code.

The process is much more complicated that I outlined but it is close. [Linked Image]

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Charlie Eldridge, Indianapolis, Utility Power Guy

Charlie Eldridge, Indianapolis Utility Power Guy