Quick Hits

📱 EPISODE 1 — Article 245 (Part 1)

Intro: Overcurrent Protection Over 1000V

SLIDE 1 — What Is Article 245?
⚡ NEW ARTICLE ALERT ⚡

Article 245 covers overcurrent protection for systems rated over 1000V AC / 1500V DC nominal — this is medium/high-voltage territory.

Fun fact: this article didn't always exist on its own. It was carved out of old Article 240 Part IX during the 2023 NEC cycle, specifically to make medium-voltage OCP rules easier to find. If you're used to hunting for this stuff buried at the end of 240 — not anymore.

SLIDE 2 — Listing Requirements (245.2)
📋 LISTING — BUT NOT YET

Here's a curveball: these listing requirements have DELAYED effective dates —

🔹 Systems ≤15,000V → OCP must be listed, effective Jan 1, 2029
🔹 Systems >15,000V but ≤52,000V → OCP must be listed, effective Jan 1, 2032

Exception both times: if the OCP is integral to a listed assembly, it doesn't need to be separately listed.

📌 Mark these dates — this is a great "gotcha" for anyone skimming instead of reading closely.

SLIDE 3 — Reconditioned Equipment (245.3)
♻️ WHAT CAN BE RECONDITIONED?

✅ PERMITTED:

Medium- and high-voltage circuit breakers

Electromechanical protective relays & current transformers

❌ NOT PERMITTED:

Medium- and high-voltage fuseholders

Medium- and high-voltage nonrenewable fuses

Also — 245.6 requires that if relays or trip units are adjustable, the SETTINGS must be documented and available to authorized designers, installers, operators, inspectors, and the AHJ on request. No mystery settings allowed.

SLIDE 4 — Exam Question + CTA
🧠 TEST YOURSELF

Q: The listing requirement for overcurrent protection on systems rated over 15,000V but not over 52,000V becomes effective on what date?

A) January 1, 2026
B) January 1, 2029
C) January 1, 2032
D) It's already required today

(Drop your answer 👇)

Next up: Circuit breaker requirements — location, ratings, and nameplate rules. FOLLOW for more daily quick-hit NEC study notes ⚡ #JoshTheSparky #NEC2026 #ElectricianLife

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