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. Students will learn a basic history of circuits; review Romex, Nob & 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

This course has been approved by Washington State for Electricians and Electrical Trainees.

  • Electrical Trainees: 8 hours Basic Classroom Training
  • Journey-level Electricians: 8 hours Industry Related
  • Course #: WA2019-069

Class Time:

  • 8:00AM – 5:00PM

Required Books/Materials

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


Classroom Information