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                                                    Install an overvoltage protection

                                                     

                                                     
                                                     

                                                    Next page: Lightning and its consequences 

                                                     
                                                     
                                                     

                                                    Lightning is a phenomenon that generates a high frequency voltage:

                                                    • The length of the cables must be taken into account in cases of high frequency
                                                    • 1 metre of cable crossed by a lightning current generates an overvoltage of 1,000V
                                                     
                                                     
                                                     
                                                     
                                                     
                                                     

                                                     

                                                     
                                                     

                                                    Mandatory in Standard IEC 60364-5-534:

                                                    • L (length of cables) < 50cm,
                                                    • cable cross-section S < 4mm²(Type 2) and S< 16mm² (Type 1).

                                                    See examples of lightning devices in the switchboard

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                                                    Surge protection guide:
                                                     

                                                    Understand overvoltage protection
                                                     

                                                     
                                                     
                                                     
                                                     
                                                     
                                                     
                                                     
                                                     
                                                     
                                                     
                                                     
                                                     

                                                    lightning devices installation in the panelboard, entrance from the top
                                                     

                                                    lightning devices installation from the top
                                                     

                                                    lightning devices installated on metal chassis