The useful distinction
Recognize it. Then verify it.
NEMA L5-20P is a 20 A, 125 V locking plug configuration documented as 2-pole, 3-wire grounding. [C217A]
Exact source example L520P: construction: 2pole3wiregrounding nylon cord plug with rubber dust shield. rating: 20A125VAC. temperature: 60Cmaximumcontinuous;-40Cminimumwithoutimpact. New exact Hubbell-PRO L520P/L620P variants, not inherited HBL2311/HBL2321 part dimensions.; Axial dimension excludes exposed blade projection and is an adjustment range.; Drawing pairs2.13in with54.1mm and1.89in with48.5mm as printed; latter conversion differs by0.49mm. Retain mm primary and flag discrepancy rather than silently reconcile. No physical compatibility, pin map or hardware validation is established. [C217C]
Source-scoped identification facts
Each value retains its exact example, role and measurement axis. Facts from different parts must not be combined into an invented component.
| Nominal contacts | 3S222NEMA L5-20P locking plug; nominal engineering count, not automatically positions, population or a device wiring map. NEMA L5-20P locking plug |
|---|---|
| Dimensions / axis | 54.1 mm rear ribbed body diameter (L520P); 48.5 mm front body diameter (L520P); 64.8–77.5 mm body axial span minimum (adjustable cord clamp) (L520P)S929Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. L520P. Documented role: plug. New exact Hubbell-PRO L520P/L620P variants, not inherited HBL2311/HBL2321 part dimensions.; Axial dimension excludes exposed blade projection and is an adjustment range.; Drawing pairs2.13in with54.1mm and1.89in with48.5mm as printed; latter conversion differs by0.49mm. Retain mm primary and flag discrepancy rather than silently reconcile. |
| Connector role | plug; plug (L520P)S222 · S929Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. NEMA L5-20P locking plug L520P. Documented role: plug. New exact Hubbell-PRO L520P/L620P variants, not inherited HBL2311/HBL2321 part dimensions.; Axial dimension excludes exposed blade projection and is an adjustment range.; Drawing pairs2.13in with54.1mm and1.89in with48.5mm as printed; latter conversion differs by0.49mm. Retain mm primary and flag discrepancy rather than silently reconcile. |
| Manufacturer | Hubbell Wiring Device-Kellems (L520P)S929Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. L520P. Documented role: plug. New exact Hubbell-PRO L520P/L620P variants, not inherited HBL2311/HBL2321 part dimensions.; Axial dimension excludes exposed blade projection and is an adjustment range.; Drawing pairs2.13in with54.1mm and1.89in with48.5mm as printed; latter conversion differs by0.49mm. Retain mm primary and flag discrepancy rather than silently reconcile. |
| Series | Hubbell-PRO (L520P)S929Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. L520P. Documented role: plug. New exact Hubbell-PRO L520P/L620P variants, not inherited HBL2311/HBL2321 part dimensions.; Axial dimension excludes exposed blade projection and is an adjustment range.; Drawing pairs2.13in with54.1mm and1.89in with48.5mm as printed; latter conversion differs by0.49mm. Retain mm primary and flag discrepancy rather than silently reconcile. |
| Exact part / implementation | L520P (L520P)S929Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. L520P. Documented role: plug. New exact Hubbell-PRO L520P/L620P variants, not inherited HBL2311/HBL2321 part dimensions.; Axial dimension excludes exposed blade projection and is an adjustment range.; Drawing pairs2.13in with54.1mm and1.89in with48.5mm as printed; latter conversion differs by0.49mm. Retain mm primary and flag discrepancy rather than silently reconcile. |
| Recorded markings | NEMA configuration and rating marked on device face;terminal identification explicitly documented. (L520P)S929Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. L520P. Documented role: plug. New exact Hubbell-PRO L520P/L620P variants, not inherited HBL2311/HBL2321 part dimensions.; Axial dimension excludes exposed blade projection and is an adjustment range.; Drawing pairs2.13in with54.1mm and1.89in with48.5mm as printed; latter conversion differs by0.49mm. Retain mm primary and flag discrepancy rather than silently reconcile. |
| View convention | Published oblique plug mating-face and cable-entry photos;side-view body dimension drawing. (L520P)S929Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. L520P. Documented role: plug. New exact Hubbell-PRO L520P/L620P variants, not inherited HBL2311/HBL2321 part dimensions.; Axial dimension excludes exposed blade projection and is an adjustment range.; Drawing pairs2.13in with54.1mm and1.89in with48.5mm as printed; latter conversion differs by0.49mm. Retain mm primary and flag discrepancy rather than silently reconcile. |
Not recorded: Positions / cavity span, Populated contacts, Contact rows, Contact pitch, Contact gender / arrangement, Mounting, Coupling / latch, Keying / polarization, Shell / form. Unknown fields stay unknown; illustrations supply no measurements or pin assignments.
Recorded variant and source limits
- Contact/pole count does not establish terminal placement, conductor colors, voltage compatibility or safe substitution.
- No fabrication dimensions, live-work procedure or device-level electrical approval is published.
Bounded facts, visible unknowns
Specifications and limits
| Documented identification | NEMA L5-20P locking plug; 20 A, 125 V, 2-pole, 3-wire grounding. [C217A] |
|---|---|
| Mechanical dimensions | No independently reviewed mechanical drawing in V39; do not use this page for fabrication, fit testing or tolerance work. |
| Engineering pinout | Source-checked engineering profile available; independent review pending. Open engineering profile → |
| Verified device list | Not included. Check exact device and accessory documentation. |
Use the source-backed form or position count only for identification. Resolve ratings, protocol, direction, wiring, cable construction and exact device support from the relevant equipment and component documentation.
Before you connect
What to check
- Identify the exact connector family and variant from the equipment or cable documentation.
- Keep shape, contact count, protocol, electrical rating and device support as separate facts.
- Do not force, rewire or adapt a connector from this recognition record; resolve the remaining requirements first.
What is not established
This field note does not approve a connection, adapter, cable assembly, rewiring scheme or fabricated part. It intentionally omits unsupported pin assignments and mechanical tolerances.
Your next step
Move from the form to the requirement.
The source trail
Evidence for this page
AI-assisted inspection is not independent engineering review. Source scope and access limitations are disclosed below. Procedural checklists are editorial requirements, not hardware measurements.
Hubbell identifies NEMA L5-20P locking plug with the documented NEMA configuration and 2-pole, 3-wire grounding context.
Hubbell Wiring Device-Kellems · HBL2311 Twist-Lock L5-20P plug ↗S222: full source recordInspect review dependencies → (private workspace)Exact source example L520P: construction: 2pole3wiregrounding nylon cord plug with rubber dust shield. rating: 20A125VAC. temperature: 60Cmaximumcontinuous;-40Cminimumwithoutimpact. New exact Hubbell-PRO L520P/L620P variants, not inherited HBL2311/HBL2321 part dimensions.; Axial dimension excludes exposed blade projection and is an adjustment range.; Drawing pairs2.13in with54.1mm and1.89in with48.5mm as printed; latter conversion differs by0.49mm. Retain mm primary and flag discrepancy rather than silently reconcile. No physical compatibility, pin map or hardware validation is established.
Hubbell Wiring Device-Kellems · Hubbell-PRO locking plug technical submittal WLSPPRO001 ↗S929: full source recordInspect review dependencies → (private workspace)
