Overview
EN 50310:2016/A2:2026 is a European standard developed by the CENELEC Technical Committee for Electrotechnical Aspects of Telecommunication Equipment (CLC/TC 215). It provides essential requirements and guidelines for the design and installation of telecommunications bonding networks in buildings and other structures. The primary focus is on establishing effective connections, or bonds, between electrically conductive elements to support the installation and operation of information and telecommunications technology (ICT) equipment. By doing so, the standard aims to minimize both direct current (d.c.) and alternating current (a.c.) potential differences, enhancing equipment performance, operational safety, and electromagnetic interference (EMI) immunity.
EN 50310 is intended for use in new construction or refurbishment projects for a variety of premises, including residential, office, industrial buildings, and data centers. While not applicable to high-voltage power supply distribution (over 1,000 V AC), its guidance can be beneficial for compliance with other EMC and electrical safety regulations.
Key Topics
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Bonding Network Design
Offers recommendations for the effective design and layout of bonding networks for telecommunications infrastructure. Emphasizes star, ring, local mesh, and mesh bonding arrangements and their relative suitability for EMI mitigation.
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Installation Requirements
Specifies methods for the proper installation of telecommunication bonding conductors, including conformity to minimum bend radii and the prohibition of coiling or doubling-back conductors. Ensures robust physical and electrical connections are maintained for the lifetime of the installation.
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Performance and Documentation
Stipulates performance criteria, such as maintaining d.c. contact resistance below specified thresholds, and requires thorough documentation of bonding system connections with supporting technical drawings and layouts.
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Adaptability for Building Types
While referencing EN 50174-2 as the primary scope, the standard offers guidance adaptable to various types of buildings, supporting best practices in different environments.
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Defined Terminology and Assessment
Updates terms and definitions to align with current telecommunications standards and emphasizes the need for risk-based assessment of bonding network design relative to operational requirements and EMI risks.
Applications
Implementing EN 50310:2016/A2:2026 provides practical benefits across a diverse set of building types and use cases, including:
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Data Centers and Server Rooms
- Enhances reliability of networking equipment by reducing EMI-related faults
- Ensures a stable signal reference for sensitive ICT equipment
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Commercial and Industrial Premises
- Supports uninterrupted business operations by minimizing potential-driven malfunctions in telecommunications cabling and systems
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Residential and Mixed-use Developments
- Promotes safety and performance for structured cabling systems, supporting modern broadband and telecommunications needs
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Renovation and Refurbishment Projects
- Ensures legacy structures can accommodate advanced ICT systems without increased risk of electromagnetic disturbances
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Compliance and Risk Management
- Assists organizations in achieving conformity with EMC requirements and contributes to better overall infrastructure resilience and uptime
Related Standards
Implementing EN 50310:2016/A2:2026 often intersects with other European and international standards, including:
- EN 50174-2:2018 – Information technology cabling installation for buildings
- EN 50667 – Automated infrastructure management (AIM) systems
- EN IEC 62368-1 – Safety requirements for information and communication technology equipment
- ETSI EN 300 253 – Requirements for telecommunications centers
- EN 50173 family – General cabling requirements
This integrated approach ensures consistent and robust telecommunications infrastructure, supporting effective bonding, grounding, and EMC performance across modern building environments.
