2026 NEC Changes: Alternative Energy and Limited Energy

By the end of this course, you will be able to: Explain when fractions of a volt or ampere can be dropped from calculations. Discuss when engineering may be used for calculating PV voltage and current. Indicate why the PV disconnection requirements were moved to Article 705. List the options for bonding movable PV components. Recall the maximum voltage for fuel cell systems. Discuss the options for existing buildings with service conductor interconnections to another source. Describe the conductor marking requirements for DC source conductors. Indicate which overcurrent protective devices are suitable for back-feed. Explain which articles were added and which were deleted as it relates to limited energy systems. Explain why Article 720 was created and what it covers. Discuss the requirement for a communications outlet in dwelling units. List the allowable wiring methods in ducts for dust, loose stock, grease, or flammable vapors. Explain when a limited energy cable can share a raceway with non-limited energy circuits. List the requirements for Class 4 systems in dwelling units. Describe what Article 724 covers. Describe what Article 800 covers.