1 Scope and conformance
1.1 Scope
This European Standard specifies minimum requirements for earthing networks and connections (bonds) in buildings in which information technology equipment is intended to be installed
to protect that equipment and interconnecting cabling from electrical hazards.
Additionally this European Standard specifies requirements and provides recommendations
for earthing networks and connections (bonds) in order for the information technology installation to achieve
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a) reliable signal reference,
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b) adequate immunity from electromagnetic interference carried by the earthing network.
The requirements of this European Standard are applicable to all types of buildings
ranging from residential to large commercial and industrial premises. Operator buildings
are addressed by ETSI EN 300 253.
This European standard specifies an earthing and bonding configuration that is appropriate
to specific mains and other power supply distribution systems.
NOTE For the purposes of this European Standard bonding networks are connected to earth and therefore create an earthing network.
This European Standard does not:
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1) apply to power supply distribution of voltages over AC 1 000 V;
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2) address the specific requirements for telecommunication centres (operator buildings); these are specified in ETSI EN 300 253.
Safety requirements for power supply installation are outside the scope of this European
Standard and are covered by other standards and regulations. However, information
given in this European Standard may be of assistance in meeting these standards and
regulations.