Master Electrician Exam Prep: Motor Conductor Sizing (NEC 430.22(A)) #NECExam

When you're sizing conductors for motors, there’s no room for guesswork—you better come correct! Incorrect sizing can lead to overheating, inefficiency, and code violations.

Welcome to Think Like a Master Electrician! In this episode, we break down a critical NEC Journeyman and Master Electrician exam question step by step. We'll help you identify keywords, navigate the National Electrical Code efficiently, and confidently locate the correct answers.

We provide you with proven tips and tricks on how to pass your state licensing exam. Learn how to master the Table of Contents, Index, and Code Articles to navigate the NEC like a pro!

🔌 Today's Question Covered:
Determine the minimum size THW copper branch circuit conductors required by the NEC to supply a 3-phase, continuous-duty AC motor that has a full-load current of 70 amperes. Assume all terminations to be rated for 75 °C.
A. 1 AWG
B. 2 AWG
C. 3 AWG
D. 4 AWG

📖 Where to Look in the 2023 NEC:
Keywords to Search: motor conductor sizing, full-load current, continuous duty, THW copper, 75°C terminations
Relevant Code Sections:
* Table 310.16 (for 75°C ampacity values)
* 430.22(A) (Motor conductor sizing: 125% of FLC)

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Видео Master Electrician Exam Prep: Motor Conductor Sizing (NEC 430.22(A)) #NECExam канала Jonathan Villarin