Branch Circuits: History and Understanding

Course Description

Branch circuits are the portion of a wiring system that extend beyond the circuit protection device, such as a fuse or circuit breaker. This course will examine branch circuits, how they have evolved, and their relation to the NEC. Participants will be guided through a basic history of circuits; review Romex, Nob and Tube, and BX Wiring Systems; and learn how to calculate modern branch circuits as per the NEC. Supplemental handouts included in cost of course.

Continuing Education Credit

This course has been approved by Washington State L&I for:

  • Electrical Trainees
    • 8 hours Basic Classroom Training
    • Course # WA2022-087
  • Journey-level Electricians, Electrical Administrators & Master Electricians
    • 8 hours Industry Related
    • Course # WA2022-087
  • Plumbers & Plumber Trainees
    • 8 hours Industry Related Electrical
    • Course #: WA2024-121

Class Times

  • 8:00AM – 5:00PM

Required Books/Materials

  • 2020 or 2023 NEC Code Book
  • Calculator
  • Paper
  • Pen/Pencil


Classroom Information

Tacoma (PLU)