Protection against lightning - General principlesLightning flashes to, or nearby, structures (or services connected to the structures) are hazardous to people, to the structures themselves, their contents and installations as well as to services. This is why the application of lightning protection measures is essential. BS EN 62305 1: 2006 provides the general principles to be followed in the protection against lightning of: structures including their installations and contents as well as people

Compatibility levels are specified for electromagnetic disturbances of the types which can be expected in public medium-voltage power supply systems

Computer networks

System users

BS EN 755-4 also provides users guidance on tolerances on forms

This part of IEC 60079 specifies requirements for the design

Operating instructions

While this standard is concerned with third-parties providing product certification

Significant changes to the text include:

IEC 60317-8

Aluminium rectangular bars are used in shop fittings

risk estimation and risk evaluation

the limits have not yet been considered