The National Electrical Code® (NEC) is the preeminent electrical installation code in the United States. However, the NEC takes on real significance when adopted into law by states and local jurisdictions. The NEMA Field Representative Program advocates for the adoption of the most current edition of the NEC, with no state or local amendments, through participation in the code adoption process and collaboration with NEMA Member companies and other industry partners. As a founding Member of the Electrical Code Coalition, NEMA has partnered with the National Fire Protection Association (NFPA) to offer the following resources related to NEC adoption in the United States.
NATIONAL ELECTRICAL CODE (NEC)
NATIONAL FIRE PROTECTION ASSOCIATION (NFPA-7)
NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)
THE ELECTRICAL SAFETY FOUNDATION INTERNATIONAL (ESFI)
Adopted in all 50 states, NFPA 70, National Electrical Code (NEC) is the benchmark for safe electrical design, installation, and inspection to protect people and property from electrical hazards.
The Electrical Code Coalition, NEMA, has partnered with the National Fire Protection Association (NFPA) to offer the following resources related to NEC adoption in the United States. There are indeed 3 trusted testing companies that can provide certification for electrical cords and related products. These companies are globally recognized and are accredited by the U.S.’s OSHA (Occupational Safety and Health Organization) as a Nationally Recognized Testing Laboratory. These companies ensure that products meet specific safety standards and comply with relevant codes and regulations.
|S||SERVICE GRADE||Cord is flexible and designed for general use.|
|J||HARD SERVICE||Cord has a standard 300-volt insulation. If there is no J in the|
designation, the cord has thicker, 600-volt insulation, designed for heavier use.
|W||OUTDOOR||Cord is rated for outdoor use includes sunlight resistant jacket and|
wet location rated conductors (formerly “W-A”)
|P||PARALLEL CORD||Cord has a parallel wire construction, used in air conditioner|
cords and household extension cords (also known as zip cord)—Always light duty
|E||THERMOPLASTIC ELASTOMER||Cord jacket is made from thermoplastic elastomer rubber (TPE) (UL/NEC designation ONLY)|
Cord jacket is made from vinyl thermoplastic
|O||OIL RESISTANT||Cord is oil-resistant.|
|V||VACUUM CLEANER||Vacuum cleaner cord (also light duty cable)|
|H||HEATER CABLE||Heater cable|
|VW-1||FLAME RETARDANT||Flame retardant|
|FT2||FLAME RETARDANT||cord is flame retardant.|
|CL2S||wire is designed for in-wall construction|
|SRDT||wire is heavy duty and good for high amperage products.|
|HPN||Cord’s performance won’t be affected by the high temperatures associated with appliances.|
|SPT-1||STRANDED, PARALLEL, THERMOPLASTIC||0.030″ Insulation 2 or 3 conductors for grounding. (PVC) Indoor Use Only|
|SPT-2||STRANDED, PARALLEL, THERMOPLASTIC|
0.045″ Insulation 2 or 3 conductors for grounding. (PVC) Indoor Use
Only (SAME AS SPT-1 JUST heavier PVC)
|SPT-3||STRANDED, PARALLEL, THERMOPLASTIC||0.060″ Insulation 2 or 3 conductors for grounding. (PVC)|
Indoor Use Only (SAME AS SPT-2 JUST heavier PVC)