
The National Electrical Code (NEC) is a set of electrical safety standards that are updated every three years by the National Fire Protection Agency. The latest NEC, released in 2023, includes updates to GFCI protection, AFCI protection, and surge protection, among other requirements for safe practices in electrical wiring, installation, testing, and maintenance. The NEC is not a US law but is often mandated by state or local governments, and compliance with the code ensures safety from potential electrical hazards.
| Characteristics | Values |
|---|---|
| Name | National Electrical Code (NEC) |
| Alternative Name | NFPA 70 |
| Year of Latest Update | 2023 |
| Frequency of Updates | Every three years |
| Purpose | Safe installation of electrical wiring and equipment |
| GFCI Protection | Expanded to include wall-mounted ovens, counter-mounted cooking units, clothes dryers, and microwave ovens |
| AFCI Protection | Included |
| Surge Protection | Included |
| Section 680.5 | Requires the use of SPGFCI devices for branch circuits rated over 150 volts to the ground |
| Section 680.22 | Requires GFCI protection for all receptacles rated 60 amps or less within 20 feet of a swimming pool wall |
| Section 110.26(A)(4) | Requires that electrical equipment with open doors that create an egress path less than 24 inches wide or 78 inches high must not block the path |
| Section 110.17 | Requires that all service and electrical preventive maintenance work must be performed by qualified persons trained in servicing and maintaining electrical equipment |
| Section 210.23 | Clarifies permissible loads for multiple-outlet branch circuits, granting permission for 10-amp branch circuits to supply certain loads |
| Article 100 | Contains all definitions |
| Adoption | Not a federal law, but commonly mandated by state or local governments |
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What You'll Learn

GFCI protection for appliances
The latest National Electrical Code (NEC) is the 2023 edition, which was issued on August 12, 2022, and came into effect on September 1 of that year. The NEC is a United States standard for the safe installation of electrical wiring and equipment, and it is revised every three years by the National Fire Protection Agency. While it is not a US law, the NEC is commonly mandated by state or local governments.
The 2023 NEC includes updates to GFCI protection for appliances, expanding to include wall-mounted ovens, counter-mounted cooking units, clothes dryers, and microwave ovens. GFCI protection now also covers any cord- and plug-connected appliance in kitchens, not just those on countertops. A GFCI update removes the distance limitation between kitchen receptacle outlets and the sink.
GFCI stands for Ground Fault Circuit Interrupters, and they are safety devices that help protect from electrical accidents and prevent electrocution, electric shocks, and burns. They work by detecting the current flowing from the hot to the neutral wires, and any imbalance will trip the device. GFCI protection is particularly important in areas where electrical devices can come into contact with water, such as kitchens, bathrooms, and garages. They are also required in areas with exposure to moisture, such as near swimming pools.
GFCI devices should be tested monthly to ensure they are in working condition. It is recommended to install GFCIs in areas where appliances and power tools are used in close proximity to water.
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Surge protection for multi-family units
The National Electrical Code (NEC) is a set of standards for the safe installation of electrical equipment in the United States. It is not a US law, but it is often mandated by state or local governments. The NEC is revised every three years by the National Fire Protection Association to ensure it keeps pace with the latest advancements in technology and safety.
The 2023 National Electric Code includes updates to surge protection requirements, building on changes made in 2020. Surge protection is now required for multi-family dwelling units, dormitory units, guest rooms and guest suites of hotels and motels, as well as patient sleeping rooms in nursing homes and limited care facilities.
Surge protection devices (SPDs) must be located within the equipment or adjacent to it. Type 1 SPDs can be placed on the load or service side of the main panel, while Type 2 SPDs are designed for the load side only and are typically used for branch circuit protection. An alternative option is to install an SPD at each next downstream device. SPDs must have a nominal discharge current rating (In) of not less than 10kA.
Multi-family buildings, also known as multi-unit buildings, are at an increased risk of lightning strikes due to their larger roof area. Lightning protection systems for these buildings should include strategically located air terminals (lightning rods) at high points and on the roof, ground electrodes, and a network of heavy-duty lightning conductors to safely conduct current. The lightning protection system must also be connected to metallic building systems such as plumbing and HVAC to equalize electrical potential.
Design and installation of lightning protection systems for multi-family units should be performed by individuals certified by the Lightning Protection Institute. Systems should comply with nationally recognized standards and be certified by the LPI-Inspection Program. It is recommended that lightning protection systems are inspected by a qualified specialist every two to five years to ensure they remain in working order.
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Electrical equipment safety
The latest National Electrical Code (NEC), or NFPA 70, was issued on August 12, 2022, and came into effect on September 1, 2022. The NEC is a United States standard for the safe installation of electrical wiring and equipment. It is not a US law, but it is commonly mandated by state or local governments, and in many jurisdictions outside of the US. The NEC is revised by the National Fire Protection Association (NFPA) every three years to ensure that the code incorporates the latest advancements in technology and safety.
The 2023 NEC includes updates in GFCI protection, AFCI protection, and surge protection, among other requirements for safe practices in electrical wiring, installation, testing, and maintenance. For example, GFCI protection has been expanded to include wall-mounted ovens, counter-mounted cooking units, clothes dryers, and microwave ovens. Additionally, surge protection is now required for multifamily dwelling units, dormitories, hotel and motel guest rooms, and patient sleeping rooms in nursing homes and limited care facilities.
To ensure electrical equipment safety, it is crucial to follow the NEC and select the appropriate personal protective equipment (PPE) for the task at hand. Electrical hazards can arise from poorly installed, faulty, or ill-maintained electrical equipment, faulty wiring, overloaded or overheated outlets, and incorrect use of replacement fuses. To mitigate these risks, electrical safety products such as arc flash PPE, hard hats, hot sticks, grounding components, face shields, headgear, jackets, overalls, insulated rescue hooks, and voltage detectors should be utilized.
The Voltgard® Electrical Safety Division, for instance, specializes in providing arc flash and electrical safety products that meet or exceed ANSI and NFPA standards. They offer a comprehensive selection of protective equipment, rubber insulating products, and accessories for live-line workers. Similarly, the Saf-T-Gard® Voltgard® Electrical Safety Division manufactures and distributes rubber insulating products, arc flash safety clothing, grounding equipment, and testing services to protect workers in various industries.
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Safe installation techniques
The National Electrical Code (NEC) is a set of safety standards and regulations for electrical installations in the United States. The NEC is not a US law, but it is commonly mandated by state or local governments. The code is updated every three years by the National Fire Protection Association (NFPA) to ensure that the latest technology and safety measures are included. The latest edition is the NEC 2023, which includes updates to GFCI protection, AFCI protection, and surge protection.
- GFCI protection for wall-mounted ovens, counter-mounted cooking units, clothes dryers, and microwave ovens.
- GFCI protection for any cord- and plug-connected appliance in kitchens.
- Removal of the distance limitation between kitchen receptacle outlets and the sink for GFCI protection.
- Surge protection for multifamily dwelling units, dormitory units, guest rooms, and guest suites in hotels and motels.
- Surge protection for patient sleeping rooms in nursing homes and limited care facilities.
- Use of SPGFCI devices for branch circuits rated over 150 volts to the ground where ground-fault protection is required.
- GFCI protection for receptacles rated 60 amps or less within 20 feet of a swimming pool wall.
- GFCI or SPGFCI protection for equipment installed between 5-10 feet horizontally from the inside walls of a pool, including luminaires, lighting outlets, and ceiling fans.
- Ensuring that electrical equipment with open doors does not block egress paths.
The NEC provides a comprehensive framework for anyone working with electricity to follow, with clear instructions on how to install wiring and electrical systems safely and efficiently. It helps to prevent electrical hazards such as shock, electrocution, and fires caused by faulty wiring or equipment. Compliance with NEC standards ensures that electrical installations are completed according to best practices and minimum safety requirements.
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Definitions
The National Electrical Code (NEC), or NFPA 70, is a set of standards for the safe installation of electrical wiring and equipment. It is part of the National Fire Codes series published by the National Fire Protection Association (NFPA). While the NEC is not a federal law, it is commonly mandated by state or local law. The NEC is revised by the NFPA's Committee on the National Electrical Code, which consists of 18 to 20 code-making panels and a technical correlating committee. The committee includes electrical equipment manufacturers, inspectors, installers, testing laboratories, and other electrical experts.
The NEC is updated and published every three years, with the 2023 edition being the most current. The 2023 NEC includes updates in GFCI protection, AFCI protection, and surge protection. GFCI protection has been expanded to include wall-mounted ovens, counter-mounted cooking units, clothes dryers, and microwave ovens. It also now covers any cord- and plug-connected appliance in kitchens, and removes the distance limitation between kitchen receptacle outlets and the sink. Section 680.5 of the 2023 NEC requires that SPGFCI devices be used where ground-fault protection is required for branch circuits rated over 150 volts to the ground.
The NEC also includes definitions of key terms. In the 2023 NEC, all definitions are located in Article 100, Definitions. This is a change from the 2020 NEC, where definitions were located in other sections of the Codebook and applied only where the term was used in that article.
Another new section of the 2023 NEC is Section 110.17, Servicing and Maintenance of Equipment. This section states that all service and electrical preventive maintenance work must be performed by qualified persons trained in the servicing and maintenance of electrical equipment. It also requires that this work be performed in accordance with the original equipment manufacturer’s instructions, as well as any information provided in the equipment listing, applicable industry standards, or as approved by the "authority having jurisdiction" (AHJ).
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Frequently asked questions
The latest National Electrical Code (NEC) is the 2023 edition, which was issued by the NFPA Standards Council on August 12, 2022, and came into effect on September 1, 2022.
The 2023 NEC includes updates to GFCI protection, AFCI protection, and surge protection. For example, GFCI protection now covers wall-mounted ovens, counter-mounted cooking units, clothes dryers, and microwave ovens. The 2023 edition also introduces new requirements for safe practices in electrical wiring, installation, testing, and maintenance.
The latest NEC is published by the National Fire Protection Association (NFPA) and is available in a spiral-bound format. It can be purchased from online retailers such as Amazon.com.








































