2.范围2。1一般2.1.1本标准规定了在拟安装电信设备的商业建筑内应遵循的统一电信接地和连接基础设施的要求。2.1.2本电信接地和连接基础设施与其他接地和连接系统（如电力接地系统、水管、防雷系统）一起构成建筑物接地系统。2.1.3本标准规定了电信接地和连接基础设施，其与其他建筑接地系统的互连性，及其对电信系统和设备的支持。 NCS TIB 93-12题为《符合电信基础设施标准的商业和政府建筑的接地和接地——背景报告》，提供了有关接地和接地概念和实践的更多信息，并解决了本标准范围之外的问题。2.1.4本标准规定了电信接地和连接基础设施的框架。图2.1-1描述了具有多个电信主干网的大型多层商业建筑的电信接地和连接基础设施的范围。图2.1-2所示为一个较小的商业建筑，其中所有电信空间都合并在一起。 本标准规定了以下要求:（a）电信入口设施、电信机柜和设备室内电信系统的地面基准；（b） 电信机柜、设备室和入口设施的连接和连接路径、电缆屏蔽、导体和硬件。2.1.5虽然本标准主要旨在为新商业建筑的设计提供指导，但可作为现有建筑翻修或翻新的指南。该标准旨在鼓励规划，其中应包括连接和接地安排，以适应电信设备的安装。 2.1.6描述设计要求和选择，以使设计师能够做出最佳设计决策。2.2本标准的例外情况本标准不提供以下要求:（a）任何电信设备及其相关布线的接地和连接；（b） 浪涌电流抗扰度和绝缘耐受电压值；（c） 验证和维护连接和接地网络的方法；（d） 设备或系统射频干扰/电磁干扰缓解的具体方法；（e） 保护器/避雷器要求；（f） 特定用户安全；（g） 本地交换运营商的接地和连接实践；（h） 本地交换运营商主要保护的应用和维护。 根据FCC规则的规定，此类保护应由当地交易所运营商负责，不属于本标准的一部分；（i） 电气服务入口。

2Scope2.1General 2.1.1This Standard specifies the requirements for a uniform telecommunications grounding and bonding infrastructure that shall be followed within commercial buildings where telecommunications equipment is intended to be installed.2.1.2This telecommunications grounding and bonding infrastructure in conjunction with other grounding and bonding systems (e.g., electrical power grounding system, water piping, lightning protection system) make up the building grounding system.2.1.3This Standard specifies a telecommunications grounding and bonding infrastructure, its interconnectivity to other building grounding systems, and its support of telecommuni cations systems and equipment. The NCS TIB 93-12, entitled Grounding and Bonding for Commercial and Government Buildings Conforming to Telecommunications Infrastructure Standards - A Background Report, provides additional information about bonding and grounding concepts and practices, and addresses issues outside the scope of this Standard.2.1.4This Standard specifies the framework for the telecommunications grounding and bonding infrastructure. Figure 2.1-1 depicts the scope of the telecommunications grounding and bonding infrastructure for larger, multi-story commercial buildings with multiple telecommunications backbones. Figure 2.1-2 depicts a smaller commercial building where all telecommunication spaces are combined. This Standard specifies the requirements for:(a) A ground reference for telecommunications systems within the telecommunications entrance facility, the telecommunications closet, and equipment room;(b) Bonding and connecting pathways, cable shields, conductors, and hardware at telecommunications closets, equipment rooms, and entrance facilities.2.1.5While primarily intended to provide direction for design of new commercial buildings, this Standard may be used as a guide for the renovation or retrofit of existing buildings. The standard is intended to encourage planning, which should include bonding and grounding arrangements that accommodate installation of telecommunications equipment.2.1.6Design requirements and choices are described to enable the designer to make the best design decisions.2.2Exclusions from this Standard This Standard does not provide requirements for: (a) Grounding and bonding of any telecommunications equipment and its associated wiring; (b) Values of surge current immunity and insulation withstand voltages; (c) Methods for verifying and maintaining bonding and grounding networks; (d) Specific methods for RFI/EMI mitigation for equipment or systems; (e) Protector/Arrester requirements; (f) Specific user safety; (g) Grounding and bonding practices of the local exchange carriers; (h) The application and maintenance of the local exchange carrier's primary protection. Such protection shall be the responsibility of the local exchange carrier as mandated within FCC Rules and is not a part of this Standard; (i) Electrical service entrance.