Quick Hits

EPISODE 18 — ARTICLE 265 FINAL REVIEW

Put It All Together

SLIDE 1 — ARTICLE 265 RECAP

2026 NEC ARTICLE 265

We've covered:

⚡ 265.1 — Scope
⚡ 265.4 — Specific-purpose circuits
⚡ 265.5 — Conductor identification
⚡ 265.6 — Voltage limitations
⚡ 265.9 — Autotransformers
⚡ 265.10 — Tapped conductors
⚡ 265.11 — Branch circuits required
⚡ 265.18 — Circuit rating
⚡ 265.19 — Conductor ampacity
⚡ 265.20 — OCP
⚡ 265.22/.23 — Permissible loads
⚡ 265.63 — Servicing equipment

SLIDE 2 — THE BIG PICTURE

Don't memorize Article 265 as a giant list of numbers.

Understand the flow:

WHAT CIRCUIT?

⬇️

DOES 265 APPLY?

⬇️

WHAT EQUIPMENT?

⬇️

HOW ARE CONDUCTORS IDENTIFIED?

⬇️

HOW IS THE CIRCUIT RATED?

⬇️

WHAT AMPACITY IS REQUIRED?

⬇️

WHAT OCP IS REQUIRED?

⬇️

WHAT OTHER ARTICLES APPLY?

That's NEC navigation.

SLIDE 3 — FINAL EXAM CHALLENGE ⚡

A 1200V ac branch circuit has a designed simultaneous load of 80A.

Under the general requirements we've studied, which pairing is correct?

A.

Conductor ampacity: 80A
OCPD: 125A

B.

Conductor ampacity: 100A
OCPD: 80A minimum

C.

Conductor ampacity: 80A
OCPD: 80A minimum

D.

Conductor ampacity: 125A
OCPD: 60A

SLIDE 4 — ANSWER + CTA

✅ ANSWER: B

Conductor ampacity:

80A × 125% = 100A

OCPD:

100% of the simultaneous load

= 80A minimum

The important lesson isn't just the math.

It's knowing which requirement you're applying to which part of the circuit.

⚡ ARTICLE 265 COMPLETE

📚 NEXT UP: ARTICLE 266

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⚡ ARTICLE 265 COMPLETE

This gives you 18 short-form episodes with a logical progression from scope → conductor identification → voltage limitations → transformers → circuit ratings → ampacity → OCP → loads → servicing → final review.

And the series naturally sets us up for the next article: 2026 NEC Article 266 — Feeders Over 1000 Volts ac, 1500 Volts dc, Nominal.

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