Look up common NEMA plug and receptacle markings by voltage, current, grounding, and blade style.
Showing 14 common configurations.
Common markings: NEMA 1-15R · NEMA 1-15P
Non-grounding configuration found on older equipment and cords.
Do not use this marking to infer that an equipment-grounding path exists. Verify the wiring and applicable replacement requirements.
Common markings: NEMA 5-15R · NEMA 5-15P
Common 125 V straight-blade configuration.
Confirm the exact device rating and wiring. A matching configuration does not verify circuit condition or protection.
Common markings: NEMA 5-20R · NEMA 5-20P
20 A, 125 V straight-blade configuration.
Verify the branch-circuit rating, conductor, device listing, and installation conditions separately.
Common markings: NEMA 6-15R · NEMA 6-15P
250 V straight-blade configuration with an equipment-grounding contact.
The configuration identifies a device pattern and rating, not the actual voltage present at the outlet.
Common markings: NEMA 6-20R · NEMA 6-20P
20 A, 250 V straight-blade configuration with an equipment-grounding contact.
The configuration identifies a device pattern and rating, not the actual voltage present at the outlet.
Common markings: NEMA 10-30R · NEMA 10-30P
Legacy 125/250 V configuration used on some older appliance circuits.
Do not infer that this legacy configuration has a separate equipment-grounding conductor or can be replaced by a different pattern without evaluating the circuit.
Common markings: NEMA 14-30R · NEMA 14-30P
125/250 V configuration with two ungrounded conductors, neutral, and equipment ground.
Verify the circuit wiring and device instructions before replacement; appearance alone cannot establish conductor connections.
Common markings: NEMA 14-50R · NEMA 14-50P
125/250 V configuration with two ungrounded conductors, neutral, and equipment ground.
Check the equipment nameplate, branch-circuit rating, receptacle listing, and installation instructions.
Common markings: NEMA L5-15R · NEMA L5-15P
125 V, 15 A locking configuration with an equipment-grounding contact.
Match the complete NEMA marking. Similar-looking locking patterns can have different voltage and current ratings.
Common markings: NEMA L5-20R · NEMA L5-20P
125 V, 20 A locking configuration with an equipment-grounding contact.
Match the complete NEMA marking. Similar-looking locking patterns can have different voltage and current ratings.
Common markings: NEMA L5-30R · NEMA L5-30P
125 V, 30 A locking configuration with an equipment-grounding contact.
Match the complete NEMA marking. Similar-looking locking patterns can have different voltage and current ratings.
Common markings: NEMA L6-20R · NEMA L6-20P
250 V, 20 A locking configuration with an equipment-grounding contact.
Match the complete NEMA marking. Similar-looking locking patterns can have different voltage and current ratings.
Common markings: NEMA L6-30R · NEMA L6-30P
250 V, 30 A locking configuration with an equipment-grounding contact.
Match the complete NEMA marking. Similar-looking locking patterns can have different voltage and current ratings.
Common markings: NEMA L14-30R · NEMA L14-30P
125/250 V, 30 A locking configuration with two ungrounded conductors, neutral, and equipment ground.
Confirm the device and generator/inlet documentation. This reference does not identify terminal connections or cord pinout.
GFCI protection, tamper-resistant construction, weather-resistant construction, isolated-ground design, USB charging are separate product attributes. Verify them on the exact device marking and listing.
Search or filter common straight-blade and locking NEMA configurations. The reference lists nominal voltage, current, poles, wires, grounding-contact type, and common device markings.
This lookup is intended to help read a device marking. It does not identify terminals or wiring connections and does not tell you whether a device is suitable for an installation.
Read the full NEMA identifier and device rating from the product label. The configuration identifier and the suffix identify the contact pattern and device end; confirm the actual manufacturer marking because cord connectors, receptacles, plugs, and inlets can use different product labels.
Always verify the circuit voltage, conductor arrangement, grounding path, overcurrent protection, and product instructions. A familiar pattern or matching voltage and amperage is not enough to approve a replacement.
The catalog covers common residential and portable-power patterns only. Consult the current NEMA WD 6 standard and manufacturer data for less common, pin-and-sleeve, multi-phase, or special-purpose devices.
Do not rely on appearance alone. Check the NEMA marking and manufacturer label, inspect the device safely, and measure the circuit with suitable test equipment. Worn, damaged, modified, or counterfeit devices may not match their apparent pattern.
A 10-30 device is a legacy 125/250 V, 30 A, 3-pole, 3-wire configuration without a separate equipment-grounding contact. A 14-30 adds a separate grounding contact and uses four wires. They are not interchangeable based on appearance or rating alone; evaluate the existing circuit and applicable replacement rules.
No. GFCI, tamper-resistant, weather-resistant, isolated-ground, and USB functions are separate product attributes. Check the exact device marking, listing, and manufacturer documentation.
No. The code describes a standardized device pattern and rating. It does not verify circuit voltage, conductor size, grounding, overcurrent protection, equipment compatibility, or the condition of the wiring.