Sample data from Engineering Database — 375 reference tables, deterministic calculators, and Engineering AI. Sign up free
Nec Ocpd Ratings: 240.6(A)
600A to 90A
NEC overcurrent protective device (OCPD) ratings — standard ampere ratings for fuses and circuit breakers per Section 240.6(A), motor branch circuit protection per 430.52(C)(1), overload relay sizing per 430.32, and transformer OCPD sizing per 450.3
| nec section | record id | rating amp (A) | standard |
|---|---|---|---|
| 240.6(A) | 600A | 600 | NEC (NFPA 70) Section 240.6(A) |
| 240.6(A) | 60A | 60 | NEC (NFPA 70) Section 240.6(A) |
| 240.6(A) | 700A | 700 | NEC (NFPA 70) Section 240.6(A) |
| 240.6(A) | 70A | 70 | NEC (NFPA 70) Section 240.6(A) |
| 240.6(A) | 800A | 800 | NEC (NFPA 70) Section 240.6(A) |
| 240.6(A) | 80A | 80 | NEC (NFPA 70) Section 240.6(A) |
| 240.6(A) | 90A | 90 | NEC (NFPA 70) Section 240.6(A) |
What else is in Engineering Database
Iron Engine ↗Engineering AI at ironengine.ai
AI built for engineering. Searches the engineering database, performs calculations, gives source-backed engineering insights.
Get started for free ↗Reference Data375 engineering tablesMaterial properties, pipe and shape dimensions, code tables, and electrical ratings across mechanical, civil, chemical, electrical, materials, and manufacturing engineering.
Browse dataCalculatorsDeterministic engineering calculatorsSizing, checking, and conversion tools that run against the reference tables. Inputs are code-compliant, outputs are traceable to the source standard.
Browse calculators