I am amused that, after 15 months of no replies there is suddenly great interest in this topic! After some additional research I believe I can help clarify the nonincendive wiring issue.
Simply put, nonincendive wiring is "intrinsically safe" wiring without the barriers/isolators...
Does anyone know of a good reference on how to apply nonincendive wiring as a hazardous area protection techique? I have a copy of the ANSI standard (12.12.01-2000); however I find the standard very confusing. I have not been able to locate any useful technical information relating to...