1 Scope
2 Normative references
3 Definitions
4 Environmental conditions and installation aspects
   4.1 General
   4.2 Relationship with EC directives
       4.2.1 EMC Directive
       4.2.2 Low voltage directive
       4.2.3 Construction product directive
   4.3 Environmental conditions
       4.3.1 Relationship between environmental conditions
             and severities of testing
       4.3.2 Climatic environment and severities for
             environmental tests
       4.3.3 Mechanical environment and severities for
             environmental tests
       4.3.4 Chemical environment
       4.3.5 Moisture, water and humidity
       4.3.6 Nuclear radiation