AC power connector
Enable an AI agent to identify an AC power connector, assess its compatibility and condition, and determine which connection, inspection or replacement actions are justified.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
Researched by: Codex + Grok
Purpose and description
Enable an AI agent to identify an AC power connector, assess its compatibility and condition, and determine which connection, inspection or replacement actions are justified.
A detachable electromechanical interface - plug, connector, appliance inlet, or socket-outlet - that joins a flexible cord or a piece of equipment to an alternating-current circuit, with standardized contact geometry that encodes voltage, current, protective-earth presence, and often temperature class so that incompatible supplies cannot mate.
It can be Identify the connector configuration from markings, documentation and observed geometry.; Compare a proposed mating pair against electrical, mechanical and protective requirements.; Record seating, locking, contact exposure and evidence of electrical isolation.; Inspect for contact damage, overheating, contamination and failed retention or strain relief.; Determine whether mating, energization or disconnection is supported by documented operating conditions and current evidence.; Specify a compatible replacement or refer unresolved defects for qualified assessment..
Distinguishing features
Its documented intended function includes transferring AC power through a separable mating interface; appearance alone does not establish AC suitability.
It provides conductive power contacts and a complementary mating arrangement, distinguishing it from a cable gland or mechanical coupling.
Its principal interface function is power connection, distinguishing it from a signal connector whose contacts may also carry incidental power.
It makes a separable connection between mating parts, distinguishing it from a permanent splice or a terminal used only to fasten bare conductors.
It exposes an electrical connection interface without itself establishing voltage conversion or AC-to-DC conversion, distinguishing it from a power converter.
Scope
+ Plug, socket, inlet or cable-connector identity and intended AC power role
+ Contact arrangement, mating geometry, keying, polarization and retention
+ Electrical ratings, contact assignments and protective-earth provisions
+ Accessible-contact protection, insulation and environmental protection
+ Connector condition, termination integrity and mounting or strain relief
+ Evidence required to permit mating, energization, disconnection or replacement
- Generation, distribution and quality of the upstream AC supply
- Complete cable construction and cable-run installation
- Internal operation and power consumption of connected equipment
- Building wiring design and circuit-protection coordination
- Voltage conversion, rectification and power-conditioning functions
- Complete adapter assemblies beyond their individual connector interfaces
Characteristics
- Connector role
- plug; socket-outlet; appliance inlet; cable connector; other documented role; unknown Identifies which mating part and installation context must be considered.
- Interface designation
- documented standard and configuration, manufacturer series, proprietary interface, or unidentified Provides a basis for compatibility checks beyond visual resemblance.
- Contact arrangement
- contact count, geometry, keying, orientation and documented assignments Separates physical fit from correct connection of supply conductors and protective earth.
- Rated AC voltage
- V AC, with stated rating conditions Constrains the supply contexts in which the connector may be suitable.
- Rated current
- A, with stated temperature, conductor and duty conditions Supports load suitability assessment without assuming the marking applies under all conditions.
- Frequency applicability
- documented frequency or range in Hz; restriction unspecified; unknown Preserves any frequency limitation without inferring one from AC voltage alone.
- Protective-earth provision
- dedicated contact; alternative documented provision; absent by design; unidentified Determines whether the interface can provide the protective connection required by the equipment.
- Protective-earth continuity
- verified with test context; failed; untested; not applicable Distinguishes the presence of an earth contact from evidence that its path is intact.
- Mating counterpart
- identified counterpart with compatibility evidence and unresolved constraints Allows suitability to be judged for the actual pair.
- Connection and retention state
- unmated; partially mated; fully seated; locked; retention defective; unknown Supports decisions about secure engagement and possible exposure or interruption.
- Electrical exposure state
- energized; potentially energized; isolation verified with context; unknown Constrains inspection, handling and separation actions.
- Physical and thermal condition
- observations of contact wear, looseness, cracking, contamination, corrosion, discoloration or deformation Captures evidence that may require withdrawal from use or further assessment.
- Environmental protection
- documented protection designation and conditions, including mated or capped state; unknown Prevents protection claims from being applied to an unsupported assembly state.
- Termination and cable-entry compatibility
- permitted conductor types and sizes, termination method, cable diameter and strain-relief arrangement Connects interface suitability to the actual conductors and mechanical support.
Also called
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 5 bundles · 9 layers · 16 findings · 24 questions.
Interface identity and mating Establishes what connector is present and what it can correctly mate with.
Similar-looking power connectors can differ in contact assignment, ratings or mating requirements.
Configuration evidence
Relates observed features and markings to a documented interface identity.
AC interface identification
Record the connector role and evidence for its intended AC power use without treating resemblance as identification.
- Is this a plug, socket-outlet, appliance inlet or cable connector, and where does its separable interface begin and end? definition
- Which markings, drawings or manufacturer records establish its configuration and intended AC power use? provenance
Mating constraints
Captures the geometry and mechanisms that permit correct engagement.
Counterpart fit and retention
Record the intended counterpart, keying, orientation and means of confirming complete engagement.
- Which counterpart configurations are documented as compatible, including any restrictions within the same connector family? boundary
- What observable seating, latch or locking condition establishes complete mating for this connector? measurement
AC duty and contact functions Relates connector ratings and contact assignments to the proposed AC connection.
Mechanical fit does not establish suitability for the supply, load or conductor arrangement.
Rating envelope
Records the electrical operating limits and their conditions.
Documented AC duty
Keep voltage, current and any frequency or temperature limitations attached to their supporting evidence.
- What AC voltage and current ratings apply to this exact variant, and under which temperature, conductor and duty conditions? provenance
- Does the proposed supply and load remain within those limits, including any documented frequency restrictions or derating? boundary
Contact functions
Identifies power, protective and auxiliary contacts and any required orientation.
Conductor assignment and polarization
Record documented contact functions and whether the mating arrangement preserves required assignments.
- Which contacts are assigned to line conductors, neutral, protective earth or auxiliary functions, and which assignments remain unknown? definition
- Does the interface enforce an orientation, and what evidence shows the actual terminations match the required assignments? measurement
Protection and operating permissions Captures electrical protective provisions and conditions governing connection actions.
An agent must distinguish a connector's protective design from verified protection in its present state.
Shock protection
Examines protective-earth provision, insulation and access to conductive contacts.
Protective paths and contact access
Record which protective features apply and the evidence that they remain effective.
- What protective-earth, insulation, shutter or recessed-contact provisions are documented for the connector? provenance
- What inspection or test evidence establishes the condition of applicable protective paths and barriers in the current mating state? measurement
Energized operation
Separates power-carrying capability from permission to make or break a connection under specified conditions.
Mating and disconnection permission
Tie permitted actions to documented switching capability, interlocks and verified electrical state.
- What documentation permits or prohibits mating or separation while energized or carrying load? provenance
- Given the isolation evidence, load state and any interlock, what conditions must be satisfied before the proposed action? action
Installed condition and serviceability Assesses the connector as installed, including degradation, environmental exposure and repair boundaries.
Correct identification and adequate ratings do not establish that a worn or incorrectly assembled connector remains usable.
Contact and enclosure condition
Records deterioration affecting contact engagement, insulation and enclosure protection.
Degradation and exposure
Keep observed defects separate from inferred causes and apply environmental claims only in their documented conditions.
- Are contacts or insulating parts loose, worn, cracked, corroded, contaminated, discolored or deformed, and how was this observed? measurement
- Does the actual exposure and mated, unmated or capped state satisfy the documented environmental protection conditions? boundary
Termination and service actions
Examines conductor attachment, mechanical support and permitted corrective work.
Assembly integrity and replacement
Record whether the termination, mounting and strain relief are suitable and whether the connector is serviceable or replace-only.
- What evidence shows that conductor selection, termination, mounting and cable restraint conform to the connector's assembly requirements? provenance
- For the observed defect, does the manufacturer permit retermination or component repair, or require replacement, and what verification must follow? action
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.
A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.
Reported evidence
Findings from the breadth pass, kept separate from the structural claims.
Kinds and varieties
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- National mains plugs and sockets (household wall interface; IEC/IECEE letter types A-N and the national standards behind them)
- IEC 60320 appliance couplers (equipment-end pairs C1-C24, e.g. C5/C6, C7/C8, C13/C14, C19/C20)
- High-temperature IEC 60320 variants (C15/C16 at 120 °C, C15A/C16A and C21/C22 at 155 °C)
- IEC 60309 industrial pin-and-sleeve (CEEform / 'commando': colour- and clock-keyed, typically 16-125 A, single- or three-phase)
- NEMA straight-blade wiring devices (e.g. 5-15, 5-20, 6-20)
- NEMA locking (twist-lock) wiring devices (L-series)
- IEC 62196 AC vehicle couplers (Type 1/SAE J1772, Type 2/Mennekes, Type 3)
- Interconnection couplers and appliance outlets (PDU/UPS outputs that feed another IEC 60320 inlet)
- Which of these kinds and varieties hold for the sense of AC power connector this model covers, and on what evidence? provenance
Identifiers and schemes
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- IEC 60320 sheet number - C{n} where odd n is the cord connector and n+1 is the mating inlet (C13/C14, C19/C20, … C1-C24) - The numbering is the working name in IT, AV, and appliance practice.
- NEMA WD 6 configuration - [L]{series}-{amperage}{P|R} (e.g. 5-15P, 5-20R, L6-30P) - L prefix marks twist-lock; P is plug, R is receptacle.
- IEC 60309 designation - {wires}{amperage}{P|C|R}{clock}[W] (e.g. 516P6W = 5-wire 16 A plug, earth at 6h) - Housing colour independently codes voltage band (yellow 100-130 V, blue 200-250 V, red 380-480 V).
- IEC/IECEE national plug letter - Type A through Type N - Travel and product literature letters, not a single IEC product code; each letter maps to a national standard (NEMA, CEE 7, BS 1363, AS/NZS 3112, NBR 14136, …).
- Which of these identifiers and schemes hold for the sense of AC power connector this model covers, and on what evidence? provenance
Standards and regulation
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- IEC 60320-1:2021 (and IEC 60320-3 standard sheets) - International Electrotechnical Commission: appliance couplers ≤250 V AC, ≤16 A
- IEC 60884-1 - IEC: plugs and socket-outlets for household and similar purposes (the wall-plug family)
- IEC 60309-1 / IEC 60309-2, also EN 60309 (CENELEC), formerly CEE 17 - IEC / CENELEC: industrial plugs, socket-outlets and couplers
- IEC 62196-2 - IEC: AC vehicle inlets and connectors for conductive charging, with IEC 61851-1 control-pilot/proximity
- NEMA WD 6 - National Electrical Manufacturers Association: dimensional specifications for North American wiring devices
- UL 498 / CSA C22.2 - UL and CSA: attachment plugs and receptacles (North American listing)
- BS 1363 - BSI: 13 A fused plugs and switched socket-outlets (UK Type G)
- AS/NZS 3112 - Standards Australia / Standards New Zealand: Australian/NZ mains plugs and sockets
- AS/NZS 60320.1:2022 - Standards Australia / SNZ: regional adoption of IEC 60320-1
- DIN EN 60320-1 / VDE 0625-1 - DKE/VDE: German implementation of IEC 60320-1
- NFPA 70 National Electrical Code - NFPA: US installation rules that select receptacle rating and configuration
- Which of these standards and regulation hold for the sense of AC power connector this model covers, and on what evidence? provenance
Real-world use
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- A country-specific wall plug moulded onto a flexible cord whose other end is an IEC C13, feeding a C14 inlet on a PC, monitor, printer, or office switch - one chassis, many wall plugs.
- C19/C20 cords between a data-centre PDU or UPS and high-draw servers or storage, where C13/C14 current is not enough.
- C5 ('cloverleaf') on laptop power-supply bricks and C7 ('figure-8') on televisions, set-top boxes, and game consoles.
- C15 on electric kettles, some laboratory heaters, and hot-running power supplies; C13 will not enter the matching C16 inlet.
- Blue IEC 60309 2P+E 16 A as campsite and outdoor-event single-phase power in Europe; red 3P+N+E 32 A on three-phase workshop machines.
- NEMA 5-15 as the default North American 125 V wall receptacle; 5-20 T-slot in kitchens and other 20 A branch circuits; 6-20/6-50 for 250 V loads such as some air conditioners.
- IEC 62196 Type 2 (Mennekes) on European public AC EV chargers; SAE J1772 Type 1 on North American and Japanese AC EVSE.
- Which of these real-world use hold for the sense of AC power connector this model covers, and on what evidence? provenance
Typical measurements
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- Rated voltage (single-phase household/appliance) - 100-250 - V AC
- Rated voltage (three-phase industrial, IEC 60309 red band) - 380-480 - V AC
- Rated current (IEC 60320 appliance couplers) - 0.2-16 - A
- Rated current (common NEMA straight-blade and locking) - 15-60 - A
- Rated current (common IEC 60309) - 16-125 - A
- Appliance-inlet temperature class (IEC 60320) - 70 (cold), 120 (hot), 155 (very hot) - °C
- Supply frequency - 50 or 60 - Hz
- C14 inlet face size - about 27.4 × 18.6 - mm
- Which of these typical measurements hold for the sense of AC power connector this model covers, and on what evidence? provenance
Failure modes and hazards
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- Contact heating, insulation softening, and fire from high contact resistance (loose, oxidized, or undersized contacts) under continuous load.
- Overcurrent on a lower-rated receptacle or cord via cheater adapters (for example a 20 A load forced onto a 15 A 5-15 circuit).
- Open protective earth - broken, cut, or omitted ground pin - leaving Class I equipment unearthed.
- Using a 70 °C C13 on an appliance that requires a C15/C16 hot coupler (kettles, some PSUs), so the connector is thermally out of class even if it can be forced onto a C14.
- Line/neutral reversal on polarized systems, leaving switched parts and accessible heaters live when 'off'.
- Arcing when an industrial connector is unplugged under load (high-current 60309 variants may add a last-make/first-break pilot).
- Strain-relief failure and conductor pull-out at the moulded plug.
- Unlisted travel adapters that defeat shutters, earthing, or current-keying.
- Which of these failure modes and hazards hold for the sense of AC power connector this model covers, and on what evidence? provenance
Regional variation
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- The same IEC 60320 shape is typically listed 10 A / 16 A at 250 V internationally, but UL/CSA listings of C13/C14 and C19/C20 are often 15 A / 20 A at 125 V in North America.
- In Australia and New Zealand, 'kettle lead' in IT speech usually means a C13 mains cord, while an actual kettle uses the hot C15 coupler.
- Wall-plug geometry is national: NEMA 5-15 (Types A/B) in North America and Japan; CEE 7/4 Schuko Type F and Type E in much of Europe; BS 1363 Type G (fused) in the UK; AS/NZS 3112 Type I in Australia/NZ; NBR 14136 Type N in Brazil.
- Japanese Type A uses two equal-width blades and is unpolarized; North American Type A/B polarizes with a wider neutral blade, so a US plug may not enter a Japanese socket.
- IEC 60309 is ordinary site and campsite power in Europe (called CEE or, in the UK, 'commando'); US dwellings and much portable kit use NEMA L-series twist-lock instead.
- EV AC inlets: Type 1 / SAE J1772 in North America and Japan, Type 2 in the EU, GB/T 20234.2 in China.
- Argentine IRAM 2073 resembles AS/NZS 3112 Type I but is wired with line and neutral reversed.
- Which of these regional variation hold for the sense of AC power connector this model covers, and on what evidence? provenance
Neighbouring kinds and how to tell them apart
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- DC power connector (barrel, USB, Anderson and similar) - Carries extra-low-voltage DC; mains AC connectors are dimensioned and listed for 100-250 V (or industrial polyphase) AC and include earth/polarization rules that DC barrels do not.
- Mains wall plug versus appliance coupler - The wall plug is the building interface (IEC 60884 / NEMA / BS 1363 / AS/NZS 3112); an IEC 60320 coupler is the equipment interface. A detachable cord has one of each, and they are not interchangeable.
- IEC 60309 industrial pin-and-sleeve - Circular, colour- and clock-keyed, typically ≥16 A and often three-phase; IEC 60320 appliance couplers are rectangular, ≤16 A, ≤250 V, and non-locking unless a vendor adds a latch.
- IEC 62196 AC vehicle inlet - Adds control-pilot and proximity contacts per IEC 61851; a mains or 60309 coupler has power contacts only (some high-current 60309 add a power pilot, not an EV signalling pair).
- NEMA twist-lock (L-series) - Locking is by rotating curved blades in a US configuration; IEC 60309 locks by pin-and-sleeve insertion plus earth-clock keying, not by a twist of NEMA blades.
- IEC 60320 C15 (hot) versus C13 (cold) - Same 10 A family, but C15 has a notch and a 120 °C rating; a C13 will not enter a C16 inlet, while a C15 will enter a C14.
- XLR or Speakon circular connectors - Similar circular housings to small 60309, but they are signal or speaker connectors, not mains pin-and-sleeve, and must not be used on AC power.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of AC power connector this model covers, and on what evidence? provenance
Sources
- IEC 60320-1:2021 Appliance couplers for household and similar general purposes - Part 1: General requirements - Official scope: two-pole and two-pole-with-earth appliance couplers, rated voltage not exceeding 250 V AC, rated current not exceeding 16 A.
- A Guide to IEC Connectors (IEC 60320) - Odd/even pairing (C13 with C14), C13/C14 vs C19/C20 current classes, Australian adoption as AS/NZS 60320.1:2022, and everyday IT/AV use.
- IEC 60320 (IEC 320) Reference Chart - Per-sheet ratings: international vs North American current (e.g. C13 10 A IEC / 15 A NA; C19 16 A IEC / 20 A NA), pole/wire counts, and temperature-family members C15/C16 and C15A/C16A.
- IEC 60320 appliance couplers - History (IEC 320 in 1970, renumbered 60320 in 1994), odd=connector/even=inlet numbering, and 70/120/155 °C temperature classes.
- IEC 60320 Appliance Connectors - Connector/inlet table with earth presence, max temperature, rated current, and typical appliances including withdrawn C3/C4 and C23/C24 unearthed 16 A.
- IEC 60320 appliance plugs - C5, C7, C13, C15, C19 - Mating pairs, protective-earth vs two-pole families, and the mechanical fact that C15 can enter C14 but C13 cannot enter C16.
- Kaltgerätestecker C13/C14 nach IEC 60320 - C13/C14 ratings (10 A / 250 V / 70 °C), DIN EN 60320-1 / VDE 0625-1, C14 face size, PE-first pin, and distinction from C15, C19, and C5.
- IEC 60320 - Standard title, 250 V / 16 A scope, split into 60320-1 general requirements and 60320-3 standard sheets, and the role of detachable cords in international equipment.
- Power connectors for servers and IT equipment (SADE-5TNRML) - Contrast of IEC 60320 C13/C14 and C19/C20 with IEC 60309 industrial pin-and-sleeve; clock-face earth keying and current-dependent diameters.
- Understanding NEMA vs IEC connectors - NEMA 5-15/5-20/6-x and L-series locking vs IEC 60320 appliance couplers vs IEC 60309 pin-and-sleeve naming ({wires}{amps}{P|C|R}{clock}).
- IEC 60309 - Industrial 'commando'/CEE 17 system, colour-by-voltage, earth-pin clock positions, common 16/32/63/125 A ratings, and EN 60309 adoption.
- IEC 62196 - AC EV coupler configurations Type 1 (SAE J1772), Type 2, and Type 3, and regional assignment (NA/Japan vs EU vs China GB/T).
- Industrial and multiphase power plugs and sockets - IEC 60309 as the dominant European industrial range; North American split between IEC 60309 pin-and-sleeve and NEMA twist-lock/straight-blade devices.
- Electrical Plug & Receptacle Types: The Complete World & NEMA Guide - Regional wall-plug letters (A/B, E/F, G, I, N), typical voltages/frequencies, and NEMA 5-15 as the default North American 125 V 15 A receptacle.
- The Difference Between Input and Output Adapter Plugs - Polarized North American Type A (wide neutral blade) versus unpolarized Japanese Type A, and why line/neutral identity matters on the AC input.
What the second pass must settle
- Does the registry intend this entry to include household socket-outlets, industrial connectors and appliance couplers under one model, or do existing registered neighbours own any of those classes?
- Where should mixed AC-power-and-signal connectors, dual AC/DC-rated interfaces and connectors inside adapter assemblies sit relative to neighbouring models?
- Which interface standards and manufacturer documents should provide authoritative configuration, compatibility and rating evidence for the first supported connector families?
- Which connector-specific inspection and test criteria can support continued-use, withdrawal and replacement decisions without inventing universal thresholds?
- How should this model reference existing models for electrical isolation, protective-earth testing and qualified work so that those responsibilities are not duplicated?