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This code shall be known as the North Carolina Energy Conservation Code as adopted by the North Carolina Building Code Council on June 13, 2017 to be effective January 1, 2019. References to the International Codes shall mean the North Carolina Codes. The North Carolina Energy Conservation Code is referred to herein as "this code."
This code applies to commercial buildings and the buildings' sites and associated systems and equipment.
  1. Energy expended in support of process energy applications does not invoke energy conservation code requirements or building thermal envelope requirements unless otherwise required in specific sections of this code.
  2. Per G.S. 143-138 (b18), no energy conservation code provisions shall apply to any structure for which the primary occupancy classification is Group F, S, or U pursuant to Chapter 3 of the 2018 North Carolina Building Code. This exclusion shall apply to the entire building area.
The delayed effective date of this Rule is January 1, 2019.
The Statutory authority for Rule-making is G. S. 143-136; 143-138.
This code shall regulate the design and construction of buildings for the effective use and conservation of energy over the useful life of each building. This code is intended to provide flexibility to permit the use of innovative approaches and techniques to achieve this objective. This code is not intended to abridge safety, health or environmental requirements contained in other applicable codes or ordinances.
Where, in any specific case, different sections of this code specify different materials, methods of construction or other requirements, the most restrictive shall govern. Where there is a conflict between a general requirement and a specific requirement, the specific requirement shall govern.
Where a building includes both residential and commercial occupancies, each occupancy shall be separately considered and meet the applicable provisions of IECC—Commercial Provisions or IECC—Residential Provisions.
Residential buildings shall meet the provisions of IECC—Residential Provisions. Commercial buildings shall meet the provisions of IECC—Commercial Provisions.
The code official shall be permitted to approve specific computer software, worksheets, compliance manuals and other similar materials that meet the intent of this code.
The North Carolina State Building Codes do not include all additional requirements for buildings and structures that may be imposed by other State agencies, occupational licensing boards, and commissions. It shall be the responsibility of a permit holder, design professional, contractor, or occupational license holder to determine whether any additional requirements exist.
Construction documents and other supporting data shall be submitted in one or more sets with each application for a permit. The construction documents shall be prepared by a registered design professional where required by the statutes of the jurisdiction in which the project is to be constructed.

Exception: The code official is authorized to waive the requirements for construction documents or other supporting data if the code official determines they are not necessary to confirm compliance with this code.
Construction documents shall be drawn to scale. Electronic media documents are permitted to be submitted where approved by the code official. Construction documents shall be of sufficient clarity to indicate the location, nature and extent of the work proposed, and show in sufficient detail pertinent data and features of the building, systems and equipment as herein governed. Details shall include, but are not limited to, the following as applicable:
  1. Insulation materials and their R-values.
  2. Fenestration U-factors and solar heat gain coefficients (SHGCs).
  3. Area-weighted U-factor and solar heat gain coefficient (SHGC) calculations.
  4. Mechanical system design criteria.
  5. Mechanical and service water heating system and equipment types, sizes and efficiencies.
  6. Economizer description.
  7. Equipment and system controls.
  8. Fan motor horsepower (hp) and controls.
  9. Duct sealing, duct and pipe insulation and location.
  10. Lighting fixture schedule with wattage and control narrative.
  11. Deleted.
  12. Air sealing details.
The building's thermal envelope shall be identified on the construction drawings.
See the North Carolina Administrative Code and Policies.
See the North Carolina Administrative Code and Policies.
See the North Carolina Administrative Code and Policies.
See the North Carolina Administrative Code and Policies.
See the North Carolina Administrative Code and Policies.
The codes and standards referenced in this code shall be those listed in Chapter 6, and such codes and standards shall be considered as part of the requirements of this code to the prescribed extent of each such reference and as further regulated in Sections C106.1.1 and C106.1.2.
Where conflicts occur between provisions of this code and referenced codes and standards, the provisions of this code shall apply.
Where the extent of the reference to a referenced code or standard includes subject matter that is within the scope of this code, the provisions of this code, as applicable, shall take precedence over the provisions in the referenced code or standard.
References to chapter or section numbers, or to provisions not specifically identified by number, shall be construed to refer to such chapter, section or provision of this code.
The provisions of this code shall not be deemed to nullify any provisions of local, state or federal law.
See the North Carolina Administrative Code and Policies.
See the North Carolina Administrative Code and Policies.
See the North Carolina Administrative Code and Policies.