NEC Article 110: installation per marking (110.3), mechanical execution (110.12), working spaces (110.26), guarding (110.27).
| Document | NEC 2023, Article 110 General requirements |
| Edition | 2023 |
| Status | Current (latest NEC edition) |
| Issued by | NFPA |
| Applies to | General equipment requirements: installation per marking, working spaces, guarding |
| № | Chapter / section |
|---|---|
| 110.3 | Installation per marking |
| 110.12 | Mechanical execution |
| 110.26 | Working spaces |
| 110.27–110.34 | Guarding |
110.3(B) Equipment installed and used per its marking and manufacturer instructions — the key reference of the whole Code.
Depth: 0.9 m (36 in) up to 150 V; 1.1 m (42 in) 151–600 V; width ≥ 0.75 m (30 in); height ≥ 2.0 m.
Live parts above 50 V guarded to IP2X; non-combustible barriers.
Automatic single-line diagrams, PUE/GOST/IEC calculations, specification and PDF — from one model.
Start freeData is for reference. Final design decisions must follow current regulations and a qualified engineer.
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