Ran Chen, EA, CFP®

Trades Exam Prep

Education EN ↓ 171 episodi

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...

Visita il sito del podcast e sostieni chi lo crea: open-exam-prep.com

Autore

Ran Chen, EA, CFP®

Categoria

Education

Sito del podcast

open-exam-prep.com

Ultimo episodio

7 nov 2026

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Episodi

[Journeyman] 6. Grounding and Bonding Serve Different Purposes 13.10.2026

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 resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - The technical distinction between grounding to earth and bondi...

[Journeyman] 5. Series and Parallel Circuits Without Losing the Units 12.10.2026

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 resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - How to calculate total resistance and circuit current for resi...

[Journeyman] 4. Power, Energy and Single-Phase versus Three-Phase Loads 11.10.2026

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 resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - The fundamental distinction between real power in watts and en...

[Journeyman] 3. Voltage, Current, Resistance and Ohms Law 10.10.2026

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 resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - Fundamental Ohm's law relationships connecting voltage, curren...

[Journeyman] 2. Finding Definitions, Articles and Exceptions in the NEC 09.10.2026

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 resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - How to efficiently navigate the Table of Contents and Index du...

[Journeyman] 1. Choosing Your Exam and the Correct NEC Edition 08.10.2026

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 resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - Why there is no single nationwide journeyman electrician licen...

NATE HVAC Exam Prep 50, Final CHP-5 Review and Troubleshooting Strategy 07.10.2026

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 resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - How to integrate all five NATE CHP-5 domains into a systematic...

NATE HVAC Exam Prep 49, Verifying Repairs and Documenting Results 06.10.2026

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 resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - How to perform steady-state post-repair operational testing to...

NATE HVAC Exam Prep 48, Preventive Maintenance that Proves Performance 05.10.2026

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 resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - The distinction between visual checklist maintenance and quant...

NATE HVAC Exam Prep 47, Gas Furnace Service and Combustion Diagnosis 04.10.2026

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 resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - Understanding the exact step-by-step sequence of operation for...

NATE HVAC Exam Prep 46, Heat Pump Service and Defrost Diagnosis 03.10.2026

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 resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - How to diagnose reversing valve internal leakage using tempera...

NATE HVAC Exam Prep 45, Diagnosing Electrical and Control Failures 02.10.2026

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 resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - How to isolate step-down transformer failures and identify sec...

NATE HVAC Exam Prep 44, Airflow Problems versus Refrigerant Charge Problems 01.10.2026

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 resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - How to differentiate between low indoor airflow and low refrig...

NATE HVAC Exam Prep 43, Refrigerant Circuit Diagnostic Patterns 30.09.2026

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 resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - How to analyze suction pressure, discharge pressure, superheat...

NATE HVAC Exam Prep 42, Turning Customer Complaints into Testable Symptoms 29.09.2026

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 resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - How to convert vague HVAC customer complaints into testable ob...

NATE HVAC Exam Prep 41, The Professional HVAC Service Call Workflow 28.09.2026

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 resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - The eleven-step chronological service call workflow required f...

NATE HVAC Exam Prep 40, Commissioning and Customer Handoff 27.09.2026

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 resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - How to measure Total External Static Pressure and compare it a...

NATE HVAC Exam Prep 39, Evacuation Charging and Startup 26.09.2026

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 resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - Why dry nitrogen pressure testing and low-PSI purging during b...

NATE HVAC Exam Prep 38, Fuel Gas Combustion Air and Vent Installation 25.09.2026

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 resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - Gas shutoff valves must be installed within 6 feet of applianc...

NATE HVAC Exam Prep 37, Condensate Drain Installation 24.09.2026

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 resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - Why negative pressure draw-through coils require a P-trap with...

NATE HVAC Exam Prep 36, Installation Wiring Controls and Protection 23.09.2026

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 resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - How to properly calculate wire gauge and breaker sizing using...

NATE HVAC Exam Prep 35, Duct Installation Sealing and Insulation 22.09.2026

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 resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - Duct layout transition slope limits and the critical role of t...

NATE HVAC Exam Prep 34, Installing Refrigerant Lines Correctly 21.09.2026

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 resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - How line sizing and pitch dictate proper oil return and preven...

NATE HVAC Exam Prep 33, Equipment Location Clearances and Service Access 20.09.2026

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 resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - How NATE exam questions test NEC 2023 Article 110.26 electrica...

NATE HVAC Exam Prep 32, Load Calculations Equipment Sizing and Matching 19.09.2026

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 resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - Why rule-of-thumb square-footage sizing is strictly rejected o...

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