�1���� General considerations
������� 1.1���� Origin of dangerous overvoltages and overcurrents
������� 1.2���� Methods of protection
������� 1.3���� Types of protective devices
������� 1.4���� Residual effects
������� 1.5���� Assessment of risk
������� 1.6���� Decision on protection
�2����
Protection of lines
������� 2.1���� Protective measures external to the conductors themselves
������� 2.2���� Special cables
������� 2.3���� Use of protective devices
������� 2.4���� Installation of protective devices
������� 2.5���� Planning of works
������� 2.6���� Recommended policy
�3����
Protection of exchange and transmission equipment
������� 3.1���� Need for protection external to the equipment
������� 3.2���� Need for equipment to have a minimum level of electrical
robustness
������� 3.3���� Effect of switching conditions
�4����
Protection of subscribers� terminal equipment
������� 4.1���� Degree of exposure
������� 4.2���� Dielectric strength
������� 4.3���� Use of protectors
������� 4.4���� Common bonding
������� 4.5���� High isolation technique
������� 4.6���� National regulations
������� 4.7���� High cost of maintenance of subscribers� installations
References
Annex A � Definition of terms associated with protection