2 Day Calculation Review

This is a 2-Day Class:

  • Day 1: Friday, August 19 2022: 8am-5pm
  • Day 2: Saturday, August 20, 2022: 8am-5pm

Course Description

This 2-day Calculations Review will provide focused training and practice calculation sessions with instructor Jim Bosshart. This course is intended for students preparing for the Washington State Administrator or Master Exam, or those who are struggling with understanding how to perform electrical calculations. Everyone in attendance will be expected to practice and perform calculations throughout the class – students who show up without the required materials, or those who do not participate in the exercises, will be asked to leave.

Students will be guided through a basic understanding of common electrical formulas and calculations; techniques for solving basic load calculations for residential and commercial structures; and methods and strategies for taking the exam. Topics covered include:

  • Commercial Tables
  • Conductor Ampacity Tables
  • Dwelling Unit Load Calculations and Demand Factors
  • Full Load Motor Current Tables
  • Ohms and Power Law Formulas
  • Overcurrent Protection Selection

Supplemental handouts included in cost of course.


  • Due to limited availability, no refunds or transfers will be issued for students who do not show to this class. No exceptions.

Continuing Education Credit

This course has been approved by Washington State for Electrical Trainees and Journey-level Electricians

  • Electrical Trainees: 16 hours of Basic Classroom Training
    • Day 1: WA2020-367
    • Day 2: WA2020-561
  • Journey-Level Electricians: 16 hours of Industry Related
    • Day 1: WA2020-367
    • Day 2: WA2020-561


  • Jim Bosshart

Required Books/Materials

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


Classroom Information