NEMA plug and receptacle configurations: 1-15, 5-15, 5-20, 6-15, 6-20, 14-30, 14-50, L5-30, L14-30 (blade numbers as published) — dimension sheet Source: Xem Studio, https://xemstudio.com/objects/nema-plug-receptacle-configurations/ (sheet CC BY 4.0) Basis: ANSI/NEMA WD 6 as summarised by Wikipedia, worldstandards.eu, NEMA's wiring devices FAQ, Hubbell Bryant and distributor listings; numbers only, no files Catalog version: 2026-10-20 Sizes: see table below - NEMA configuration names read as: a number for the family (1 = 125 V no ground, 5 = 125 V grounded, 6 = 250 V grounded, 14 = 125/250 V four-wire), a hyphen, the amps; an L in front means locking (twist-lock). P is the plug (male), R the receptacle (female) and C the cord connector. - The dimensional standard for all of them is ANSI/NEMA WD 6, which is sold, not free. The numbers on this page are the ones that public summaries and maker pages print; the sources read give a full set of blade numbers for the 1-15 and 5-15 only. Every blank in the table is a number Xem could not read in a source, not a missing blade. - Maker drawings were read for the 5-15P (Pass & Seymour PS5266 and the Turnlok L630 sheet): they print overall housing numbers such as 2.791, 1.752, 1.516 and 1.358 in without saying which length each is, so none is used. Hubbell's 14-50 housing numbers have the same problem. - Disagreement kept: the 5-15 ground pin is 3.2 mm longer than the power blades on Wikipedia and worldstandards.eu, 4 mm longer on the Museum of Plugs and Sockets page. dimensions.com adds a 21.4 mm earth pin length and a 6.3 to 7.9 mm 'height' for the power blades without saying what they are measured from; those are not used. - No receptacle slot sizes, contact positions, or plug body outlines were read, so no file is drawn: a plug drawn from the blade numbers alone would not be the part you can buy. Wall plate and box numbers are on the pages wall-plate-duplex-us, wall-plate-toggle-us and device-boxes-us. - A polarised 1-15P fits a 5-15R: the receptacle has the same wider neutral slot (Wikipedia). IEC 60320 appliance couplers (C13 / C14 and others) are on their own page. configuration poles / wires rating as published blade or pin numbers as published source 1-15P plug 2 / 2 (hot, neutral, no ground) 15 A, 125 V max Two flat blades, 1/4 in (6.4 mm) wide (6.3 mm on worldstandards.eu), 0.06 in (1.5 mm) thick, 5/8 to 23/32 in (15.9 to 18.3 mm) long, 1/2 in (12.7 mm) apart; polarised neutral blade 5/16 in (7.9 mm) wide Wikipedia; worldstandards.eu 5-15P plug / 5-15R receptacle 2 / 3 15 A, 125 V (Pass & Seymour PS5266 datasheet: 15 A, 125 V, 2-pole 3-wire) Power blades as on the 1-15P (worldstandards.eu: 6.3 wide, 1.5 thick, 15.9 to 18.3 long, 12.7 apart). Ground pin Ø3/16 in (4.8 mm), round or U-shaped; 1/8 in (3.2 mm) longer than the power blades (Wikipedia, worldstandards.eu) but 4 mm longer in the Museum of Plugs and Sockets; offset 15/32 in (11.9 mm) from the blades, 1/4 in (6.4 mm) edge to edge (Wikipedia) Wikipedia; worldstandards.eu; dimensions.com; plugsocketmuseum.nl 5-20P plug 2 / 3 20 A, 125 V (amps from the naming rule; 125 V from Wikipedia's table) Neutral blade turned 90 degrees; its inner edge is about 1/2 in (12.7 mm) from the hot blade. No other numbers in the sources read Wikipedia 6-15P plug 2 / 3 15 A, 250 V max Collinear horizontal blades 23/32 in (18.3 mm) centre to centre, plus a ground pin. Blade width and thickness not in the sources read Wikipedia 6-20P plug 2 / 3 20 A, 250 V max One blade turned 90 degrees. No numbers in the sources read Wikipedia 14-30P plug 3 / 4 30 A; voltage not settled: Wikipedia's table prints 250 V max for the 14-series rows, distributor listings for 14-50 and L14-30 print 125/250 V L-shaped neutral blade. No numbers in the sources read Wikipedia 14-50P plug 3 / 4 (Hubbell: 3-pole 4-wire) 50 A, 125/250 V AC (Hubbell Bryant catalog) Straight neutral blade, sized so that it does not mate with a 14-30 receptacle. Hubbell's plug housing numbers (A 2.88 in, B 4.13 in) are printed without a legend, so they are not used Wikipedia; Hubbell Bryant A-27 5-30 and 5-50 plugs (the bigger 5-series) 2 / 3 30 A and 50 A, 125 V 1 in (25.4 mm) between the power pins; the 5-30 also has an L-shaped neutral blade Wikipedia (quoting the NEMA locking configuration chart) L5-30P locking plug 2 / 3 30 A, 125 V (amps from the naming rule) Curved-blade, twist-locking. No numbers in the sources read Wikipedia L14-30P locking plug 3 / 4 30 A, 125/250 V AC, single phase (distributor listing title) Curved-blade, twist-locking. No numbers in the sources read Zoro listing; Wikipedia any plug (duplex receptacle spacing) - - Maximum plug diameter 1.531 in (38.9 mm, computed) so that a plug fits in each half of a duplex receptacle; the FAQ says blade profiles are specified in UL 1659 NEMA wiring devices FAQ Files elsewhere (not hosted by Xem Studio; license as stated by the publisher): - ANSI / NEMA: ANSI/NEMA WD 6 Wiring Devices - Dimensional Specifications (the standard behind every NEMA configuration; sold, not free) — web — Standards body's page; dimensions are facts, the standard itself is paid — https://webstore.ansi.org/standards/nema/ansinemawd2012 - Wikipedia: NEMA connector: rating table and the blade numbers quoted for 1-15, 5-15, 5-20, 5-30, 5-50, 6-15 — web — Publisher's page; dimensions are facts — https://en.wikipedia.org/wiki/NEMA_connector - World Standards (worldstandards.eu): Plugs and sockets of types A and B (NEMA 1-15 and 5-15): blade width, thickness, length, spacing, earth pin — web — Publisher's page; dimensions are facts — https://www.worldstandards.eu/electricity/plugs-and-sockets/ab/ - dimensions.com: Type B plug and socket: blade and earth pin numbers (agrees with the page above on spacing and earth pin) — web — Publisher's page; dimensions are facts — https://www.dimensions.com/element/type-b-plug-socket - Museum of Plugs and Sockets: North American plugs: the earth pin of the 5-15P is 4 mm longer than the hot / neutral blades — web — Publisher's page; dimensions are facts — https://plugsocketmuseum.nl/NorthAm1.html - NEMA Wiring Devices: Wiring Devices Frequently Asked Questions (WD 11-2023): maximum plug diameter 1.531 in; blade profiles are in UL 1659 — web — Publisher's page; dimensions are facts — https://www.nemawiringdevices.org/wp-content/uploads/2023/04/Wiring-Devices-Frequently-Asked-Questions.pdf - Hubbell Bryant: Catalog page A-27: 50 A straight blade devices (5-50, 6-50, 10-50, 14-50, 15-50, 18-50), ratings and housing dimensions — web — Publisher's page; dimensions are facts — https://hubbellcdn.com/catalogpage/BRY_A-27_CatalogPage.pdf - Pass & Seymour / Legrand (RS copy): PS5266 straight blade plug, NEMA 5-15P, 15 A 125 V, 2-pole 3-wire (drawing numbers are not labelled) — web — Publisher's page; dimensions are facts — https://assets.rs-online.com/v1698741793/Datasheets/6784b33f28e34c387848b8da8562b6ff.pdf - Zoro (distributor listing): Locking plug L14-30P, 30 A, 125/250 V AC, single phase, 3 pole — web — Publisher's page; dimensions are facts — https://www.zoro.com/i/G4439605/ - McMaster-Carr: Panel-mount NEMA receptacles (per-part CAD; no maker CAD page was reached) (free STEP/IGES per part, for your own design use; no redistribution) — STEP, IGES, PDF — McMaster-Carr site terms: personal design use, no redistribution [verify license at link] — https://www.mcmaster.com/products/panel-mount-nema-receptacles No true-size file yet: the published figures do not fix the whole shape; a measured scan is planned. API: https://xemstudio.com/api/geometry?object=nema-plug-receptacle-configurations