Electrical codes and standards

NOTE:  2020 National Electrical Code adoption is delayed.

Chapter 1315 of the Minnesota State Building Code adopts a national standard for the installation of electrical wiring, apparatus and equipment for electric light, heat, power, technology circuits and systems, and alarm and communication systems. Minnesota's electrical code consists of the National Electrical Code (NEC) as published by the National Fire Protection Association (NFPA).

The 2017 NEC was adopted by the Minnesota Board of Electricity with an effective date of July 1, 2017. Requests for Electrical Inspection (electrical permits) filed with us on or after July 1, 2017, are subject to the provisions of the 2017 NEC. Electrical license examinations are based on the requirements of the 2017 NEC.

• 2020 NEC Frequently Asked Questions

• 2017 NEC Frequently Asked Questions

• Chart of 2017 NEC Errata and Tentative Interim Amendments

  • 2017 NEC Errata (NFPA)

  • 2017 NEC Tentative Interim Amendments (NFPA)

• Residential Inspection Checklist

• Free access to the National Electrical Code (must create a free NFPA account for access)

• Electrical laws and rules

Bulletins and code resources

Agriculture buildings

• Article 547: agriculture buildings

• Equipotential plane for livestock confinement

• Livestock waterers and equipotential planes

• Minnesota Stray Voltage Guide 

Building codes

• Building code fact sheets

• Minnesota State Building Codes

General safety

• Electric Shock Drowning Minnesota

• Electric Shock Drowning Prevention Association

• NFPA Tip Sheet: Marina and Boating Safety

General wiring

• Cable bracing requirements

• Circuit breakers in low ambient temperatures

• Coordination of overcurrent protective devices

• Determining the electrical datum plane elevation

• Electrical code requirements for accessory dwelling units (ADU)

• Extension of circuitry in manufactured homes

• Flexible cords used for connecting luminaires

• Grounding and bonding for detached buildings or structures

• History of residential wiring practices

• Impressed current cathodic protection

• Moved buildings or structures

• Number of services to a building

• Primary injection testing

• Residential Electrical Inspection Checklist

• Type SE and USE cable

• Type TC cable for the interconnection of mini-split air conditioning units

• Use of Type NM cable in garages and accessory buildings at multi-family dwellings

• Warning ribbons for service conductors

• Wiring methods for Class 2 LED drivers

Hazardous (classified) locations

• Bulk storage dispenser classifications

• Fuel dispensing: installations, retrofits and replacements

• Woodworking shop classification

Licensing and inspections

• Electrical work – Minor repair work

• Electrical work – Electrical maintenance work

• LED inspection fee calculation

• Manufactured home parks

• Minnesota school superintendents

• Radon fan installation

• Siding replacement licensing requirements

• Technology systems – General summary of licensing and inspections

• Technology systems – Electrical licensing and inspection chart

• Technology systems – Important information for power-limited technicians

• Technology systems – Important information for technology system contractors

Questions?

Contact us at dli.electricity@state.mn.us or 651-284-5026.