NEC Label Configurator

This is a textbook Sign: the article mandates a label ('shall have a label') with prescribed verbatim wording, prescribed color (white on red), reflectivity, and minimum letter height, located on or within 3 ft of the switch. It requires a distinct installer-applied physical placard. This maps to the Rapid Shutdown Switch products. The reference maps SKUs 138-01/02/09 (Rapid Shutdown Switch) to 690.12(D)(2) 2023; in the 2023 NEC the switch-labeling requirement and the buildings-with-rapid-shutdown label are both under 690.12(D), and this batch's '690.12(2)' item carries the switch-label wording. I match 138 series with high confidence for the switch-identification label (138-09 is explicitly the reflective variant, matching the reflective requirement).

Explicit Sign: 'shall have a permanent label' with a simple building diagram and prescribed verbatim wording, prescribed letter height and contrast, at a defined location (service equipment). This is a distinct installer-applied placard — the 'PV Rapid Shutdown' building/diagram placard. The reference nec_sku_map maps SKUs 136-03, 136-03-45, 136-03-54 directly to 690.12(D) 2023, giving a high-confidence match. These are the correct rapid-shutdown building placards.

Unambiguous Sign: 'shall ... be permanently marked "PV SYSTEM DISCONNECT"' plus a conditional WARNING label for energized-open-position terminals complying with 110.21(B). Two distinct installer-applied physical markings are mandated. The reference maps SKUs 039/049/050 ('PV System Disconnect') to 690.13(B) 2023 (high confidence for the primary marking) and SKU 048 (WARNING dual-terminal-energized) to 690.13(B) 2023 (high confidence for the warning clause). Both required products exist and are code-year-mapped.

The clause uses mandatory 'shall be provided' language for a 'directory' — a permanent physical placard identifying/locating the disconnecting means of each power source. A directory per 705.10 is the classic solar facility map/plaque. This is a distinct installer-provided physical sign, so it classifies as Sign. It only applies in the multiple-remote-PV-systems condition, so it is conditional but when triggered it mandates the placard. The reference maps the 705.10 directory to the Solar Facility Map placard family (118-134), which is the correct product family for a 705.10 directory; I match those with medium confidence because this batch article is 690.4(D) (2023) while the reference explicitly maps the map placards to 705.10 (2023), and 690.4(D) points to 705.10 — the underlying required product is the same 705.10 directory.

Classified as Sign because the clause is an unambiguous mandate to install a physical permanent placard: ‘Plaques or directories shall be installed.’ A plaque/directory is a defined signage artifact (a permanent identification of power-source locations). The 2023 code consolidated the former 690.56(B) facility-identification content into a pointer to 705.10, which requires a permanent plaque or directory denoting the location of all electric power source disconnecting means / a facility map. The reference nec_sku_map confirms the signage nature: the ‘Solar Facility Map Placard’ family (118–134 series) is mapped to article 705.10 for year 2023, which is precisely what 690.56 references. AMBIGUITY: the provided text of 690.56 itself is only the referencing sentence and does not restate the exact wording the plaque must carry — that detail lives in 705.10. But the ‘shall be installed’ language plus the plaque/directory noun is sufficient to require a physical sign. Because 690.56 (2023) is functionally the 705.10 plaque, the correct product is a Solar Facility Map placard sized to the job; the older 2017 mapping of 690.56 to Rapid Shutdown SKUs 115-01/115-02 reflects a different (pre-2020) code structure and is a low-confidence match for 2023.

This is a core signage mandate. The text is imperative ('shall be installed') and specifies a permanent, physical medium ('Permanent plaques, labels, or directories'). It further dictates required content in three enumerated items, including verbatim marking text 'CAUTION: MULTIPLE SOURCES OF POWER,' and cross-references the 110.21(B) marking-durability rules. All hallmarks of a Sign are present: permanence, mandated location (service equipment), and mandated legend. The reference nec_sku_map already maps 705.10 (2023) to the Solar Facility Map placard family (118-134), which serves the directory/plaque function of denoting disconnect locations. The 'CAUTION: MULTIPLE SOURCES OF POWER' wording is precisely satisfied by SKUs 116-03/117-02/177-02. Ambiguity worth flagging to a customer: 705.10 bundles THREE things into one placard requirement; a single facility-map placard can carry all three if it includes the map, emergency numbers, and the caution wording, but a standalone 'Multiple Sources of Power' label alone does not satisfy items (1) and (2). Best practice is a facility-map/directory placard that also bears the caution legend.

Short but unambiguous marking mandate: 'shall be marked to indicate the presence of all sources.' The imperative 'shall be marked' plus prescribed informational content (identify that multiple sources feed the OCPD-containing equipment) makes this a physical Sign requirement. The reference nec_sku_map maps 705.30(C) (2023) directly to SKUs 170-01/02/03 ('Warning Dual Power Supply') and 171-01/02/03 ('Warning Three Power Sources'), which is exactly the 'indicate the presence of all sources' content — the correct SKU is chosen by the number of sources feeding that equipment. Challengeable nuance: this applies specifically to 'equipment containing overcurrent devices' (panelboards, load centers, combiner/subpanels) that is backfed/interconnected — not every enclosure. It overlaps conceptually with 705.10's 'multiple sources of power' plaque but is a distinct, equipment-level marking rather than the service-location directory. Dual vs Three selection depends on the actual source count.