NEMA Power Cords

NEMA Power Cord in USA & Canada must match the rated load requirements without derating under sustained conditions. Each cord configuration adheres to standardized NEMA classes, supporting 125V, 250V, and 277V at currents from 15A to 30A, ensuring compatibility with circuit protection design and thermal rise constraints across continuous and peak load profiles. 

Voltage Rating

125V / 250V / 277V AC (based on NEMA configuration)

Current Rating

15A, 20A, 30A (continuous duty at 60 Hz)

Conductor Material

Stranded bare copper, ASTM B3 compliant

Conductor Gauge

18 AWG to 10 AWG, per UL 62 and CSA C22.2

Insulation Dielectric Strength

≥ 1500V AC for 60 seconds, per UL 62 test method

Product Description

Procurement in USA & Canada mandates cords meet UL 62, UL 817, and CSA C22.2 standards. Each NEMA Power Cord is traceable to certified batch records, maintaining conformity for facility inspections, field evaluations, and ISO-based quality audits without requiring additional documentation or third-party testing. 

Plug Blade Tolerance

±0.2 mm on thickness and ±0.5 mm on insertion depth

Contact Resistance

≤ 50 micro-ohms at rated current (4-wire Kelvin tested)

Insertion/Withdrawal Force

4.5 N to 13.3 N, per ANSI/NEMA WD-6

Jacket Type

SJT, SJTW, STOW, TPE (oil, UV, water resistant)

Temperature Rating

-40°C to +105°C continuous operating temperature

Flame Resistance

VW-1 rated (UL 1581) for vertical flame propagation

Bend Radius (Static/Flexing)

6x OD static / 10x OD dynamic minimum bend radius

Shielding (Optional)

Braided copper or aluminum foil with 85% minimum coverage

Hi-Pot Test Voltage

2000V AC for 1 minute between conductors and ground

≥ 133 N axial pull resistance per UL 817

≥ 133 N axial pull resistance per UL 817

Technical Advantages

Thermal, chemical, and mechanical stability is critical for power cords used in high-duty environments. NEMA Power Cord in USA & Canada is constructed using SJT, SJTW, or STOW insulation with dielectric strength tested per ASTM D149. Jacket materials resist oil ingress, UV degradation, and flex fatigue, maintaining dielectric integrity beyond 20,000 bending cycles. 

Precision in blade alignment, plug thickness, and contact pressure affects electrical continuity and mating reliability. Each NEMA Power Cord in USA & Canada features molded or mechanically fastened plugs with tolerances held to ANSI/NEMA WD-6 dimensional standards, eliminating mismatch with panel receptacles and reducing thermal stress on plug faces. 

 

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Industry Applications

Industrial Automation Systems

Supplies power to control panels, HMIs, and motor drives using NEMA L5/L6 connectors with oil-resistant, flexible jacket insulation. 

Medical Diagnostic Equipment

Powers Class I and Class II medical devices requiring hospital-grade NEMA 5-15P cords with green dot compliance and dielectric protection. 

Data Center Rack PDUs

Connects high-density power distribution units using NEMA L5-20P or 5-20P cords with flame-retardant, low-leakage current shielding. 

Telecommunication Base Stations

Powers UPS systems and networking switches with NEMA 5-15P cords, rated for EMI shielding and extended outdoor exposure conditions. 

Test and Measurement Instruments

Interfaces benchtop analyzers and oscilloscopes using NEMA 5-15P plugs with precision-molded geometry and strain-relieved jacket terminations. 

Food Processing Machinery

Powers IP-rated equipment with NEMA L5-30P cords using thermoplastic elastomer jackets designed for washdown and caustic cleaning environments. 

 

NEMA Power Cords

Customization for Application Constraints

Cords are provided in custom lengths with optional strain reliefs, right-angle connectors, and keyed interfaces. NEMA Power Cord in USA & Canada integrates directly into enclosure layouts, reducing excess slack, minimizing EMI exposure from coiling, and supporting enclosure ingress protection standards up to IP65 where required. 

Excessive heat generation at plug interfaces often results from elevated contact resistance. NEMA Power Cord in USA & Canada is tested for <50µΩ contact resistance under load, with thermographic profiling at full rated current. This ensures stable operation in confined or thermally loaded environments without derating or de-rating calculations. 

Having Doubts? Our FAQ

Check all our Frequently Asked Question

How does Frigate ensure dimensional accuracy in molded NEMA plug assemblies?

Frigate uses precision molding dies with cavity tolerances of ±0.2 mm to maintain plug geometry. This ensures consistent blade alignment and insertion depth across high-volume production. Each batch is verified against ANSI/NEMA WD-6 plug standards. Consistent geometry reduces wear on mating receptacles and ensures reliable contact pressure. 

What testing does Frigate perform to validate conductor resistance in NEMA Power Cords?

Frigate performs four-wire Kelvin resistance measurements on conductors to detect micro-ohm deviations. These tests confirm uniform current flow without hotspots or resistance imbalance. All cords meet the resistance limits set in UL 817. This ensures thermal stability even under prolonged current draw at maximum rating. 

 

How does Frigate manage cord strain relief for repeated plug-in and flexing use cases?

Frigate integrates molded strain reliefs designed to pass UL 62 flexing tests with over 20,000 cycles at defined bend radii. Material selection includes flexible PVC and TPE to absorb mechanical stress. This prevents conductor fatigue and jacket splitting near terminations. It ensures long service life in movable or handheld equipment. 

 

How does Frigate support application-specific NEMA cord configurations for dual-voltage systems?

Frigate provides NEMA L14 and L6 series cords configured for dual-voltage or multi-phase setups with precise phase marking. These cords are engineered to match panel wiring schemes and avoid phase-cross errors. Voltage separation and grounding continuity are verified during high-potential testing. This ensures system safety during installation and load balancing. 

What process does Frigate use to ensure NEMA cord sets meet both UL and CSA cross-border standards?

Frigate sources UL and CSA-certified components and manufactures under audited conditions for dual standard compliance. Each NEMA Power Cord in USA & Canada is labeled with file numbers traceable to regulatory bodies. Frigate also maintains records for field inspectors and certification reviews. This eliminates compliance delays for OEM and facility deployments. 

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Operations Office

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NEMA Power Cords

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