Temporary Installations — Article 590 (2026 Renumbered): Time Limits, Wiring Methods, GFCI and the Assured Grounding Program
"Temporary Wiring" is a named bullet under *Services, Service Equipment & SDS* on every Texas form. Article 590 is short, but the 2026 edition renumbered every section, so a 2023-era answer key will send you to the wrong section. Read the map first.
NFPA 70 National Electrical Code, 2026 edition · Reviewed 2026-09-19
"Temporary Wiring" is a named bullet under Services, Service Equipment & SDS on every Texas form. Article 590 is short, but the 2026 edition renumbered every section, so a 2023-era answer key will send you to the wrong section. Read the map first.
1. The 2026 section map
| Topic | 2023 | 2026 |
|---|---|---|
| Scope | 590.1 | 590.1 |
| Listing of decorative (holiday) lighting | 590.5 | 590.2 |
| All wiring installations (other articles apply; approval) | 590.2 | 590.4 |
| Time constraints | 590.3 | 590.5 |
| General (feeders, branch circuits, receptacles, disconnects, lamps, splices, support) | 590.4 (its (A) Services paragraph is gone; 2023 (B)–(J) are 2026 (A)–(I)) | 590.6 |
| Ground-fault protection for personnel | 590.6 | 590.7 |
| Guarding over 600 V | 590.7 | 590.8 |
| Overcurrent protective devices | 590.8 | 590.9 |
590.4(A): except as specifically modified by Article 590, all other requirements of the Code for permanent wiring apply to temporary installations. 590.4(B): temporary wiring methods are acceptable only if approved based on the conditions of use and any special requirements of the temporary installation.
This is where the public part ends.
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