SummaryThis Recommendation: • provides recommendations for bonding and earthing of telecommunication equipment in residential and commercial customer premises; • refers to ITU-T Rec. K.21 for equipment resistibility requirements; • recommends earthing and bonding requirements to coordinate with the resistibility requirements of ITU-T Rec. K.21 and the safety requirements of IEC 60950-1; • recommends the installation practices for bonding of all services and the installation of SPDs; • illustrates problems associated with earthing and bonding and provides solutions for these earthing and bonding problems. These include: 1) methods to improve the earthing and bonding; 2) methods of providing additional protection external to the equipment; 3) special resistibility and safety requirements; • recommends responsibilities for protection at customer premises; • refers to draft IEC 62305-3 for protection against direct lightning. |