Quick Hits

EPISODE 6 — The Rest of Article 90

Focus: 90.7 + 90.8 + 90.9

Slide 1 — Hook

⚡ ARTICLE 90 ISN'T DONE YET

Three more sections you should know:

90.7 → Equipment
90.8 → Wiring Planning
90.9 → Measurements

Slide 2 — 90.7 + 90.8

🔎 90.7 — EQUIPMENT

Proper examination of equipment under recognized standards provides a basis for approval.

Factory-installed internal wiring generally isn't something you completely re-inspect when properly listed equipment is installed.

⚡ 90.8 — PLAN AHEAD

Spare raceways, adequate space and accessible distribution equipment can make future expansion safer and easier.

Slide 3 — 90.9

📏 UNITS OF MEASUREMENT

The NEC uses SI units as its preferred measurement system.

SI appears first, with inch-pound units generally following in parentheses.

90.9 also establishes circumstances where soft conversion is permitted.

End CTA / Exam Question:

🧠 TRUE OR FALSE?

Compliance with the numerical value shown in either the SI or inch-pound system constitutes compliance with the NEC.

TRUE — 90.9(D)