Codes of Record

What applies to my job?

Pick the state and the product you build, install, or inspect. The card below answers from each state’s own record.

Inverters and power control in Montana

Which codes apply? In Montana, inverters and power control systems fall under the 2023 NEC and the 2024 residential IECC.

The inverter, the power control system, and the interconnection to the grid. State record read Oct 20, 2026. Data as of Oct 26, 2026.

Codes that reach inverters and power control systems

The edition Montana enforces for each code that governs the product, and the part of the code that does.

  1. NECNational Electrical Code
    2023 NECPartial

    in force since Sep 26, 2026

    Where it reaches the product. Article 705, interconnected power sources, with 690 and 706 for the source and the listing the inverter must carry.

    National Electrical Code (NFPA 70) under the Montana state building code · ARM 24.301.401

    The Montana NEC record
  2. IECC residentialInternational Energy Conservation Code, residential
    2024 IECCPartial

    in force since Sep 26, 2026

    Where it reaches the product. Where a state adopts the solar-ready or storage-ready appendix, the space and the conduit the inverter needs.

    International Energy Code, 2024 Edition (IECC) · ARM 24.301.161

    The Montana IECC residential record

Montana laws that name inverters and power control systems

Statutes, rules, and commission orders are tracked state by state.

No Montana law or rule on the site names inverters and power control systems. The product page shows the states that have one.

For information only. Your local building or fire official decides which code applies. We check state records often but can miss a recent change, so confirm with your official before you design, permit, or install. Terms of use