Washington 4 Hour 2020 NEC Changes to Chapters 1 & 3

This course satisfies the continuing education requirement for Journey Level, Residential Specialty Plumbers, and Plumber Trainees to take a minimum of four hours of Industry-Related Electrical content, and is also accepted as CE credit for domestic pump and pump and irrigation plumbers.

The class begins with an examination of the 13 changes to Article 100 (Definitions) and 4 changes to Article 110 (Requirements for Electrical Installations) including changes to 110.12 Mechanical Execution of Work, 110.14 Terminal Connection Torque, 110.22 Identification of Disconnecting Means, and Spaces About Electrical Equipment.

It then presents 29 significant changes from Chapter 3 [Wiring Methods and Materials], including the reorganization of Article 310 and Ampacity Tables, a new Article on Type P Cable, and a new Article 311 on Medium Voltage Cable. The class also covers important code revisions (or newly added codes) on:

• Protection Against Physical Damage with Alternative Metal Fittings;
• Boxes, Conduit Bodies or Fittings Required;
• Stair Towers (Exit Enclosures);
• Power Monitoring or Energy Management Equipment in Enclosures;
• Volume Allowance for EGCs and Equipment Bonding Jumpers;
• Outlet Boxes for Ceiling Fans;
• Type MC Cable in Hazardous Locations;
• Measuring Type NM Cable from the Enclosure; and
• Limitations of Single Conductor Applications in Cable Tray Systems; and
• Conductor Size and Termination in Cablebus.

Course ID(s): WA2024-105

Approved By: Department of Labor & Industries - Plumber Program