Endesa and Iberdrola include house protection against overvoltages in their particular regulations
Aplicaciones Tecnológicas, S.A. have all the appropriate protectors for lines where lightning can damage electrical and electronic equipment inside a house
Big power supply companies such as Endesa and Iberdrola publish particular regulations aimed to optimize the security of the electrical installations. Such regulations have recently been updated and both include now the need of protection against overvoltages, both temporary and transient. Indeed the amount of electronic equipment in particular houses has increased remarkably during the last years, equipment that are now costly and more sensitive to voltage surges.
Aplicaciones Tecnológicas, S.A. has a very wide range of protectors for both temporary and transient overvoltages. These overvoltages could damage home appliances through service lines (power supply, telephone, TV signal...) even if the building is correctly protected against direct lightning strike.