The Basics of Commercial Electrical Systems Video Series

This video series introduces inspecting commercial electrical systems. You can skip to any of the following videos.

Video List

1. About This Series Video
2. Electrical Portion of the ComSOP Video
3. Definition and Identification of a Commercial Building Video
4. Basics of Three-Phase and Single-Phase Power Sources Video
5. Electrical Distribution Equipment Video
6. Branch Circuits Video
7. Classified Hazardous Locations Video
8. Testing Methods and Equipment Video
9. Common Electrical Defects Video
10. Electrical Room Mock Inspection Video
11. Conclusion Video

Helpful Articles

• How to Inspect a Commercial Electrical Panel
• Safe Clearances for Electrical Equipment: Working Space and Dedicated Space
• About the Electrical Service at Commercial Buildings 
• Commercial Electrical Systems: What Is Three-Phase Power?
• Inspecting Transformers