This course provides a focused review of 2026 National Electrical Code changes and requirements related to branch circuits, feeders, and services. Learners will examine how branch circuit design and installation support safe and compliant electrical systems through proper conductor identification, GFCI protection, ground-fault protection of equipment, receptacle placement, lighting requirements, and branch circuit applications in dwelling units, dormitories, electrical rooms, and systems exceeding 1,000 volts AC or 1,500 volts DC.

The course also covers feeder and service requirements, including how Article 215 and Article 225 work together to govern feeder installations and outside branch circuits, the rules for building disconnecting means, and key Article 230 service requirements. Topics include listed service equipment, minimum conductor sizing, line-side service conductor splicing, surge protection, meter sockets supplying fire pumps, dwelling service equipment, and equipment permitted on the supply side of service disconnects.

By the end of the course, learners will be prepared to interpret and apply updated 2026 NEC branch circuit, feeder, and service requirements in real-world electrical installations.

After successfully completing this course, you will be able to:

Recall conductor marking requirements for branch circuits.

Describe revised GFCI requirements and ground-fault protection of equipment requirements for branch circuits.

Explain NEC requirements for dormitories with permanent cooking facilities, dwelling unit receptacles, and receptacles in electrical rooms.

Identify when 10-ampere branch circuits are permitted or prohibited.

Explain when lighting from an adjacent area may be used as required lighting and where the Code covers branch circuits exceeding 1,000 volts.

Explain how Article 215 works with Article 225 to address feeders and outside branch circuits.

Describe requirements for building disconnecting means, listed service equipment, minimum service conductor sizing, and line-side service conductor splicing.

Identify service-related requirements for surge protection, meter sockets supplying fire pumps, dwelling service equipment, and equipment permitted on the supply side of service equipment.