FIELD GUIDESource-led reference

P188 / Power / Connector

NEMA 5-20R receptacle

NEMA 5-20R is identified by the 5-20 receptacle form, including a T-shaped slot in the documented wiring-device guidance.

Also called 5-20R NEMA 5-20 receptacle T-slot outlet

The T slot helps identify a receptacle family; it does not establish circuit condition or installation compliance.

Look for

Use the receptacle designation for identification only and leave branch-circuit work to qualified guidance.

Claim inspection dates: 2026-10-05, 2026-10-22 · Independent review pending

The useful distinction

Recognize it. Then verify it.

NEMA 5-20R is identified by the 5-20 receptacle form, including a T-shaped slot in the documented wiring-device guidance. [C188A]

Exact source example HBL5369C: construction: Cord-mounted female5-20R connector body;2pole3wire grounding; screw terminals. rating: 20A125VAC. temperature: -40C without impact to75C continuous. Exact named part only. Product specification is not a specimen measurement or interoperability approval. No physical compatibility, pin map or hardware validation is established. [C188B]

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.

Documented examples; not a mating drawing or compatibility approval
Nominal contacts3S196Three conductor positions are represented; the T-slot cue is identification only, not an installation drawing.
Dimensions / axis2.78 in manufacturer labelled length (HBL5369C); 1.41 in manufacturer labelled width (HBL5369C); 1.53 in manufacturer labelled height (HBL5369C)S901Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. HBL5369C. Documented role: socket. Exact named part only. Product specification is not a specimen measurement or interoperability approval.
Connector rolesocket (HBL5369C)S901Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. HBL5369C. Documented role: socket. Exact named part only. Product specification is not a specimen measurement or interoperability approval.
Keying / polarizationT-shaped current-carrying opening beside straight opening and grounding opening in published oblique face photo (HBL5369C)S901Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. HBL5369C. Documented role: socket. Exact named part only. Product specification is not a specimen measurement or interoperability approval.
ManufacturerHubbell Wiring Device-Kellems (HBL5369C)S901Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. HBL5369C. Documented role: socket. Exact named part only. Product specification is not a specimen measurement or interoperability approval.
SeriesInsulgrip (HBL5369C)S901Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. HBL5369C. Documented role: socket. Exact named part only. Product specification is not a specimen measurement or interoperability approval.
Exact part / implementationHBL5369C (HBL5369C)S901Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. HBL5369C. Documented role: socket. Exact named part only. Product specification is not a specimen measurement or interoperability approval.

Not recorded: Positions / cavity span, Populated contacts, Contact rows, Contact pitch, Contact gender / arrangement, Mounting, Coupling / latch, Shell / form, Recorded markings, View convention. Unknown fields stay unknown; illustrations supply no measurements or pin assignments.

Report a correction to these facts →

Bounded facts, visible unknowns

Specifications and limits

NEMA 5-20R receptacle facts and limitations
Documented identificationNEMA 5-20R receptacle with T-slot identification cue. [C188A]
Mechanical dimensionsNo independently reviewed mechanical drawing in V36; do not use this page for fabrication, fit testing or tolerance work.
Engineering pinoutSource-checked engineering profile available; independent review pending. Open engineering profile →
Verified device listNot included. Check exact device and accessory documentation.
No electrical replacement approval.

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

  1. Identify the exact connector family and variant from the equipment or cable documentation.
  2. Keep shape, contact count, protocol, electrical rating and device support as separate facts.
  3. Do not force, rewire or adapt a connector from this recognition record; resolve the remaining requirements first.
Trace a supported connection class →

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.

Back to first citation ↑
C188ASource checked · pending review

Hubbell/Bryant identifies the NEMA 5-20R receptacle and notes its T-shaped slot characteristic.

Hubbell / Bryant · Wiring device frequently asked questions ↗

Locator: NEMA 5-15 and 5-20 plug/receptacle identification discussion
Access: public page. Identification/reference scope only. V36 does not convert this source into a universal pinout, fabrication drawing, electrical approval or end-to-end compatibility verdict.

S196: full source recordInspect review dependencies → (private workspace)

Claim scope: V36 catalogue-expansion identification fact only; not independent technical approval, fabrication data, wiring instruction or end-to-end compatibility proof.. Next review due 2027-01-03.

Back to first citation ↑
C188BSource checked · pending review

Exact source example HBL5369C: construction: Cord-mounted female5-20R connector body;2pole3wire grounding; screw terminals. rating: 20A125VAC. temperature: -40C without impact to75C continuous. Exact named part only. Product specification is not a specimen measurement or interoperability approval. No physical compatibility, pin map or hardware validation is established.

Hubbell Wiring Device-Kellems · HBL5369C straight-blade female connector specification ↗

Locator: pp.1-2; Dimensions; Current; photo; revisionfooter
Access: public pdf text. No independent technical review, hardware validation, specimen measurement or general interoperability approval. Exact scopes and unresolved fields remain controlling.

S901: full source recordInspect review dependencies → (private workspace)

Claim scope: Exact named component/family technical construction reference from the full current primary document; geometry, ratings and implementation limits do not transfer to other variants.. Next review due 2027-01-20.

Suggest a correction to this field note →

Put this field note to work.

Add to discovery trayRecord an unsaved candidate (private workspace)

Compare look-alikes: NEMA 5-15 versus 5-20 forms

Candidate selection does not confirm the identity or capabilities of your physical item.

Evidence behind this page

Scope first. Source second. Approval separate.

2 linked sources · 2 scoped claims · 0 sources with inspection/access flags.

Page scope: catalogue_expansion_v36

Assessment 2026-10-22 · earliest scheduled source review 2027-01-03. This is a recorded-date assessment, not a live source check. Page-level independent review is not established by this panel.

Inspect 2 source scopes, access limits and dates

S196 · Wiring device frequently asked questions

Hubbell / Bryant · Manufacturer / product-owner domain · inspected 2026-10-05 · due 2027-01-03

Within inspection window

Scoped support: Identifies NEMA 5-15P/R and 5-20P/R forms and notes the T-slot characteristic of a 5-20R receptacle.

Not established / limitations: Identification/reference scope only. V36 does not convert this source into a universal pinout, fabrication drawing, electrical approval or end-to-end compatibility verdict.

Locator: NEMA 5-15 and 5-20 plug/receptacle identification discussion

S901 · HBL5369C straight-blade female connector specification

Hubbell Wiring Device-Kellems · Unclassified publisher domain · inspected 2026-10-22 · due 2027-01-20

Within inspection window

Scoped support: Current primary-document research for P188 / HBL5369C. Each normalized fact retains its exact part/family, role and document scope.

Not established / limitations: No independent technical review, hardware validation, specimen measurement or general interoperability approval. Exact scopes and unresolved fields remain controlling.

Locator: pp.1-2; Dimensions; Current; photo; revisionfooter

Trace 2 claims to their source records

C188A · P188

Hubbell/Bryant identifies the NEMA 5-20R receptacle and notes its T-shaped slot characteristic.

Claim scope: V36 catalogue-expansion identification fact only; not independent technical approval, fabrication data, wiring instruction or end-to-end compatibility proof.

Source links: S196 · Evidence trail → (private workspace)

C188B · P188

Exact source example HBL5369C: construction: Cord-mounted female5-20R connector body;2pole3wire grounding; screw terminals. rating: 20A125VAC. temperature: -40C without impact to75C continuous. Exact named part only. Product specification is not a specimen measurement or interoperability approval. No physical compatibility, pin map or hardware validation is established.

Claim scope: Exact named component/family technical construction reference from the full current primary document; geometry, ratings and implementation limits do not transfer to other variants.

Source links: S901 · Evidence trail → (private workspace)

Prepare this page for review → (private workspace)Read the evidence method →

Recorded evidence only. An inspection date, publisher label, source link or generated packet is not independent technical review, hardware testing, fabrication approval or a compatibility verdict.