Trades Exam Prep artwork

Courses · Ran Chen, EA, CFP®

Trades Exam Prep

by Ran Chen, EA, CFP®

Trades Exam Prep is a free, daily podcast by OpenExamPrep covering the most in-demand skilled trades licensing and certification exams — including EPA 608 (HVAC refrigerant), FAA Part 107 (drone), Master Electrician, Plumber, General Contractor, ASE automotive, NATE, OSHA 10/30, Welder Certification, and more. Each 5-minute episode breaks down one exam topic with concrete examples, common exam traps, code references, and field-ready memory tricks to help you pass on your first attempt. No fluff, no filler — just the concepts you need to know, explained the way the exam tests them. This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP designation. He is passionate about opening access to high-quality exam preparation for everyone — from journeyman to master license, from apprentices to seasoned tradespeople. For free practice questions, AI-powered explanations, flashcards, and full study guides, visit https://open-exam-prep.com/ Subscribe and listen daily — your license is closer than you think.

Latest episodes

Showing 20 · updated from the feed

[Journeyman] 28. Dwelling Load Calculations and Demand Factors

This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening

Nov 4
4 min

[Journeyman] 27. Balanced Three-Phase Calculations and Power Factor

This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening

Nov 3
4 min

[Journeyman] 26. Single-Phase Load Calculations with Clear Assumptions

This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening

Nov 2
4 min

[Journeyman] 25. Generators, Solar and Energy Storage Systems

This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening

Nov 1
5 min

[Journeyman] 24. Hazardous Locations, Pools and Other Special Rules

This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening

Oct 31
4 min

[Journeyman] 23. Transformers and Separately Derived Systems

This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening

Oct 30
4 min

[Journeyman] 22. Motor Overload and Short-Circuit Protection

This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening

Oct 29
4 min

[Journeyman] 21. Motors: Full-Load Current and Nameplate Current

This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening

Oct 28
4 min

[Journeyman] 20. Luminaires, Lighting Loads and Controls

This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening

Oct 27
4 min

[Journeyman] 19. Switches, Receptacles and Equipment Listings

This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening

Oct 26
4 min

[Journeyman] 18. Conduit Fill and Why Conductor Area Matters

This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening

Oct 25
5 min

[Journeyman] 17. Box Fill: Counting Conductors, Devices and Grounds

This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening

Oct 24
4 min

[Journeyman] 16. Raceways, Cables and Choosing a Wiring Method

This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening

Oct 23
4 min

[Journeyman] 15. Dwelling Branch Circuits and Receptacle Placement

This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening

Oct 22
4 min

[Journeyman] 14. GFCI and AFCI Protection: Different Hazards and Rules

This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening

Oct 21
4 min

[Journeyman] 13. Overcurrent Protection and Device Ratings

This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening

Oct 20
4 min

[Journeyman] 12. Ambient Temperature and Current-Carrying Conductor Adjustments

This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening

Oct 19
4 min

[Journeyman] 11. Temperature Ratings and Conductor Ampacity

This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening

Oct 18
5 min

[Journeyman] 10. Continuous Loads and Conductor-Sizing Logic

This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening

Oct 17
4 min

[Journeyman] 9. Feeders and Branch Circuits: Where Each Begins

This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening

Oct 16
4 min

Chart trend

Position in the Courses chart (US), last 90 days.

#78
all-time peak
3
days in the top 100 since Jun 2026

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#139 ▲ 32 Courses US

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