Article 326 is designated for which of the following?

Article 326 of the National Electrical Code (NEC) specifically addresses Integrated Gas Spacer Cable (IGS). This type of cable is designed for use in overhead distribution systems where it can effectively provide both electrical and physical properties needed for utility applications. The article outlines the requirements for the construction, installation, and maintenance of IGS to ensure safe and efficient operation.

Integrated Gas Spacer Cables are designed with a unique configuration that allows for a combination of electrical insulation and structural support, typically featuring an insulated conductor placed between two non-conductive spacers. This configuration helps manage the physical spacing required for the safe operation of high-voltage circuits, reducing the risk of electrical faults or environmental influences that could compromise the integrity of the wiring.

Focusing on the other choices, the items listed under Flat Cable Assemblies, Surge-Protective Devices, and Cabling for Multi-family Dwellings would refer to different articles within the NEC that cover those specific types of electrical systems and their required safety measures. Each of those categories has its own designated article that stipulates the necessary standards for safety, installation, and performance, which makes Article 326 exclusively relevant to Integrated Gas Spacer Cable.