Article 90

Article 90 contains the scope, purpose, and administrative provisions for NFPA 70. This Article is a specific requirement of the 2020 National Electrical Code Style Manual Section 2.1.1.

This Article plays an important role in helping the user of the document understand how to   

Article 90 was introduced to NFPA 70 in 1959 but well before this formal creation of an Article that was focused on helping the user of this document understand its proper use and application, language existed.  It was NFPA 70-1943 that introduced a purpose and scope but we didn’t have it in the form of an Article 90.  It wouldn’t be until 1959 that the technical panel responsible introduced an Article 90.  The following is a time-line of related events for Article 90.

  • 1923 – Did not include a “Purpose and Scope” section.  
  • 1943 – Did include a “Purpose and Scope” for the Code but wasn’t Article 90.
    • NOTE:  This does not mean that it was added in 1943 as earlier copies between 1923 and 1943 have not been reviewed. 
  • 1956 – The sections Purpose and Scope separated from the previous section titled “Purpose and Scope” into two individual sections.  Still no Article 90.
  • 1959 – Article 90 is Introduced. 90-1 is Purpose and 90-2 is Scope.
  • 1971 – Removed the word “basic” from (b) noting that this Code contains provisions considered necessary for safety.  Not “basic” provisions.
  • 1981 – Small overhaul to include 1st level sub-division titles of “Practical Safeguarding”, “Adequacy”, and “Intention”
  • 2002 – Added 1st level sub-division (C) “Relation to Other International Standards”
  • 2005  – Made minor tweaks to 1st level sub-division (C)
  • 2014 – Removed existing (C) “Intention” moving the sentence “This Code is not intended as a design specification or an instruction manual for untrained persons” to (A) and relabeled (D) to (C). 

NFPA 70-2023 continues the journey of improving Article 90 because useability and clarity are important for electrical safety.

90.1 Scope

90.2 Use and Application

90.3 Code Arrangement

90.4 Enforcement

90.5 Mandatory Rules, Permissive Rules, and Explanatory Material

90.6 Formal Interpretations

90.7 Examination of Equipment for Safety

90.8 Wiring Planning

90.9 Units of Measurement