Massachusetts Electrical Code

Here you'll find information relating to the Massachusetts Electrical Code.

The Board of Fire Prevention Regulations is currently reviewing Draft Amendments to 527 CMR 12.00 Massachusetts Electrical Code based on the 2023 edition of NFPA 70 National Electrical Code. A link to the draft amendments is available here:

Draft 527 CMR 12.00 Amendment Package

Massachusetts Electrical Code

The current State Electrical Code currently in effect is based upon NFPA 70, 2020 edition. To view this code free of charge, go to, click on "Codes and Standards", select NFPA 70, Free Access, select the 2020 edition, click on "view". The Board of Fire Prevention Regulations also adopted Massachusetts amendments to the code to address situations unique to our Commonwealth.

A proposed emergency amendment was approved by the Board of Fire Prevention Regulations on May 28, 2020.  This emergency amendment will take effect on June 26, 2020, the language is available at the link below.  It relates to emergency disconnects. 

527 CMR 12.00 Amendment


Massachusetts Electrical Code Update News

The review of the next version of 527 CMR 12.00, NFPA 70 National Electrical Code 2023 edition with unique Massachusetts amendments is underway.   Any individual or organization that wants to recommend proposals for amendments to the code may do so by filling out the form at this LINK. Code change proposals are due no later than Friday September 16, 2022. Instructions for submission are contained on the form itself.

2023 MA Electrical Code Proposal Form

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Past Editions of the State Electrical Code

Code enforcement officials, architects, and engineers often to need to refer to previous editions of the State Electrical Code that were in effect when a building was built or occupied. NFPA

National Electrical Code:
To view the Base Code - NFPA -70, go to the NFPA Codes webpage, select the code edition you would like to view, and then the website will ask you to register to be able to view the archived version of the code.

Below are the previous Massachusetts Amendments to NPFA 70.  Each document will tell you which edition of NFPA 70 was in effect at the time. 


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