The National Electrical Code (NEC) is a standard developed and published by the National Fire Protection Association (NFPA) for safe electrical design, installation, and inspection to protect people and property from electrical hazards. Article 384 of NEC 2023 covers the requirements for strut-type channel raceways used in electrical systems.
Strut-type channel raceways, also known as metal framing systems or metal cable trays, are used for supporting and routing electrical wires and cables. These systems are made of metal channels, fittings, and accessories and are designed to provide structural support to the wiring system.
Article 384 of NEC 2023 specifies the minimum requirements for the installation and use of strut-type channel raceways. These requirements are intended to ensure that the raceways are installed and used in a safe and reliable manner.
Section 384.2 of NEC 2023 outlines the general requirements for strut-type channel raceways. This section requires that the raceways be installed in a manner that ensures they are secure and provide adequate support for the wiring system. The raceways must also be installed in a manner that allows for easy access for maintenance and repairs.
Section 384.4 of NEC 2023 covers the materials used for strut-type channel raceways. This section specifies that the raceways must be made of metal or other materials that are approved for use in electrical systems. The materials must be able to withstand the environmental conditions to which they will be exposed, including exposure to moisture, heat, and chemicals.
Section 384.6 of NEC 2023 covers the sizing and spacing requirements for strut-type channel raceways. This section specifies the minimum size of the raceway that must be used based on the number and size of the conductors being installed. The spacing requirements for the raceways are also specified to ensure that they are installed in a manner that provides adequate support for the wiring system.
Section 384.8 of NEC 2023 covers the requirements for the installation of strut-type channel raceways. This section specifies that the raceways must be installed in a manner that ensures they are properly grounded and bonded to the electrical system. The installation must also comply with all other applicable NEC requirements, including those for electrical boxes, conduit fittings, and wire splices.
Section 384.10 of NEC 2023 covers the requirements for the protection of strut-type channel raceways. This section specifies that the raceways must be protected from physical damage, including damage from impact, vibration, and other environmental factors. The protection must be provided through the use of protective shields or other approved methods.
Section 384.12 of NEC 2023 covers the requirements for the use of fittings and accessories for strut-type channel raceways. This section specifies that all fittings and accessories used with the raceways must be approved for use with the specific type of raceway being used. The fittings and accessories must also be installed in accordance with the manufacturer’s instructions and the applicable NEC requirements.
In conclusion, Article 384 of NEC 2023 provides the minimum requirements for the installation and use of strut-type channel raceways in electrical systems. These requirements are intended to ensure that the raceways are installed and used in a safe and reliable manner. It is important to consult the NEC and local codes and regulations for specific requirements and guidance for the installation and use of strut-type channel raceways in electrical systems.