Course Description

This course provides a practical approach to residential service sizing using NEC standards, starting with the application of Ohm’s Law and Power Law in basic load calculations. Participants will learn to complete the Standard Single-Family Calculation Worksheet step by step, covering lighting, receptacle, appliance, dryer, range, and motor loads, as well as applying demand factors, calculating feeder neutral loads, conductor sizing, and grounding requirements. The course also introduces Duplex and Optional Single-Family calculation methods, equipping learners with the skills to perform accurate, code-compliant residential load calculations. Supplemental handouts included in cost of course.

Class Time

8:00am – 5:00pm

Continuing Education Credit

This course has been approved by Washington State Labor & Industries

License Type: Electrical Trainee
Course Number: WA2025-286
CEU Credit: 8 hours Basic Classroom Training

License Type: Electrical Journeyman, Administrators and Master Electrician
Course Number: WA2025-286
CEU Credit: 8 hours Industry Related

Required Books/Materials

2020 or 2023 NEC Code Book
Calculator
Paper
Pen/Pencil