NEC Article 240: standard ratings, breaker-not-larger-than-cable (240.4), feeder taps 240.21, placement 240.24.
| Document | NEC 2023, Article 240 Overcurrent Protection |
| Edition | 2023 |
| Status | Current (latest NEC edition) |
| Issued by | NFPA |
| Applies to | Overcurrent protection: ratings, standard sizes, placement, taps |
| № | Chapter / section |
|---|---|
| 240.1–240.15 | General |
| 240.4–240.6 | Conductor protection, standard ratings |
| 240.21 | Feeder taps |
| 240.24 | Device placement |
240.4 Breaker rating must not exceed conductor ampacity.
240.4(D) 15 A — 14 AWG; 20 A — 12 AWG.
240.6 Standard ratings: 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90, 100, 110, 125, 150, 175, 200, 225, 250… 600 A.
Short taps (≤ 3 m) without protection under conditions; 7.5 m taps with extra rules.
240.24(A) Breaker handles ≤ 2.0 m above floor; not over stairs; not in bathrooms.
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