CONTENTS

 1     Scope 
 2     References 
 3     Definitions  
 4     Abbreviations   
 5     Responsibility   
        5.1     Building owner       
        5.2     Manufacturer         
        5.3     Network operator 
        5.4     Customer  
 6     Risk management 
        6.1     Sources of damage
        6.2     Risk assessment     
        6.3     Risk reduction       
 7     Objectives for bonding configurations and earthing
 8     Protection requirements   
        8.1     Equipotential bonding         
        8.2     a.c. power distribution and SPDs   
        8.3     Telecommunication lines and SPDs
        8.4     Selection of SPDs for installation at point of entry   
 9     Installation of SPDs (primary protectors)  
        9.1     Installation methods for SPDs (primary protection) for different power distribution systems    
        9.2     Examples of installation methods to achieve the requirements of short bond wires    
        9.3     Location of the telecommunication SPD     
        9.4     Safety issues          
10     Combination protection units       
       10.1     Single CPU          
       10.2     Multiple CPUs      
11     Implementation
12     Large installations           
Annex A – Installation methods for different power systems    
        A.1     Installation method for TN-S power distribution systems    
        A.2     Installation method for TN-C-S power distribution systems
        A.3     Installation method for TN-C power distribution systems   
        A.4     Installation method for TT power distribution systems        
        A.5     Installation method for IT power distribution systems         
Annex B – Solutions for earthing and bonding problems    
        B.1     Methods to improve earthing and bonding  
        B.2     Methods of providing additional protection external to the equipment          
        B.3     Special resistibility and safety requirements 
Appendix I – Earthing and bonding scenarios    
Appendix II – Examples of mitigation measures for different power installations    
       II.1     TN-C and TN-C-S types  
       II.2     TT and IT types     
Appendix III – Surge current paths and resulting potential differences    
Appendix IV – Special resistibility and safety requirements