Marcia Hultman

Cabinet Secretary

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South Dakota Electrical Commission

Tool Box - Resources for Electricians

Calculators and Mobile App Links

National Electrical Code Guidance

Common Violations

Thermal Barrier Reference Document

Grounding Electrode Systems

Changing Services

Calculators and Mobile App Links

Available Fault Current Calculator Mobile App (from Cooper Bussman)

Free resources from Mike Holt

Code Guidance

The following are provided as a courtesy because they are commonly referenced electrical wiring codes from South Dakota Codified Law (SDCL) and National Electrical Codes.

  • 110.11 Structure status before a RI will be conducted:
    • Windows/Doors installed or openings enclosed with plywood, tarps or Tyvek.
    • Structure wrapped in Tyvek or similar material.
    • Shingles, tin, steel, or other roofing material installed (tar paper does not satisfy this requirement).
    • Soffits installed or soffit area enclosed.
      Note: Enclosures for windows, doors and soffits which protect the installation from the elements are acceptable.
  • 210.52 & 20:44:22:23 If the back of a cabinet(s) is butted up to a studded wall, it is not considered an island or peninsula. Therefore the requirements in 210.52 pertain. (Note: recommend to install a circuit to be available for future utilization where not required.)
  • 210.8 GFCI and AFCI receptacles in cabinets are considered readily acceptable unless behind an appliance.
  • 210.8 A 10 - Guidance is to treat washing machine like a sink in a laundry area.
  • 210.8 A 10 - Guidance is a cabinet is not considered a door, doorway or window.
  • 210.8 B & 551.71 F 30 and 50 amp GFCI on pedestals – No GFCI required for residential, RV park (two or more), farmstead
  • 210.12, Art. 100 and 90.4 - Specialty resort installations containing the 4 elements of a dwelling unit will be required to utilize AFCIs. (Permanent provisions for living, sleeping, cooking and sanitation).
  • 210.12 A - AFCI is not required for 120V furnace circuit.
  • 210.12 A - Outlets or devices which would include switches are required to be AFCI protected.
  • 210.23 A 2 - Please note manufacturer’s instructions for appliances and/or the 50 percent rule may require an appliance circuit to be dedicated.
  • 210.52 A 2 1 – Outlets below the work surface satisfy the wall space requirement.
  • 7 and under rooms
  • 250.52 Concrete encased electrode - required to be connected to foundation or footing.
  • 445.13 - The exception clarifies generators with breakers can be derated at 100 percent.
  • 517 Chiropractor Office – Human medical would include chiropractor, eye
  • 590 - All temporary power receptacles require GFCI protection.
  • 680.42 C The 2017 NEC now allows NM cable to be installed between the service panel and the breakers disconnect for the outdoor hot tub.
  • 702.4B2 - Utilize this article when sizing a generator utilizing an automatic transfer switch.
  • Shunt trip breakers for "Machine Roomless" passenger elevators may be located in the elevator or in the building machine room
  • Mini-split cable EC or HVAC installer – HVAC may install (listed assembly) yet required to follow manufacturer’s instructions

Common Violations

  • Wiring Bulletin - Grounding electrode conductor must terminate at the neutral bar in the service.
  • NEC 110.24 requires service equipment in other than dwelling units to have the available fault current labeled. The label shall have the date the calculation was figured and shall be able to withstand the environment involved.
  • Size over current protection per name plate on equipment. Example air conditioner.
  • NEC 406 Install weather resistant receptacles.
  • NEC 408.4 - Labeling breakers


Changing Services

  • Current service locations are not grandfathered
  • 110.26 – Access and working space shall be provided and maintained about all electrical equipment to permit ready and safe operation and maintenance of equipment.
  • 210.12 If circuits are modified, replaced or extended over six feet, AFCI protection is required.
  • S.D. Wiring Bulletin - Service conductors extending over five feet in a building could be run in rigid metal conduit up to 15 feet.
  • 240.24(f) Services cannot be located in stairways, bathrooms, clothes closets, etc.

Documentation of Rough in Process

  • Rough in inspection with corrections – yellow sticker
  • Rough in inspection approved – adhere blue sticker. (Yellow sticker removed or blue sticker adhered over yellow sticker.)