Quick Hits

EPISODE 7 — Can You Pass Article 90?

Slide 1

🧠 2026 NEC EXAM CHALLENGE

Which section deals with mandatory and permissive rules?

A. 90.2
B. 90.3
C. 90.5
D. 90.8

Slide 2

⏱️ DON'T SCROLL.

Pick your answer.

C?
A?
B?
D?

Slide 3

⚡ ANSWER: C — 90.5

90.5 addresses mandatory rules, permissive rules and explanatory material.

SHALL / SHALL NOT → Mandatory

SHALL BE PERMITTED → Permissive

Slide 4

📖 ARTICLE 90 COMPLETE

Now you know:

90.1 Scope
90.2 Application
90.3 Arrangement
90.4 Enforcement
90.5 Rules & explanatory material
90.6 Interpretations
90.7 Equipment
90.8 Wiring planning
90.9 Measurements

Save this series. You're going to need Article 90.