International Standards and Conformity Assessment for all electrical, electronic and related technologies



Reference EN 50310:2010
Title Application of equipotential bonding and earthing in buildings with information technology equipment
Project Number 21325
Abstract/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 a) reliable signal reference, 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: 1) apply to power supply distribution of voltages over AC 1 000 V; 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.


Current Stage code 6060
Current Stage code date 2010-10-15
Current Stage code deadline 2011-10-01
Deadline date for vote  


Order Voucher  


IEC Technical Body ISO/IEC/JTC 1/SC25
Reference Document  
ICS 29.120.50 - Fuses and other overcurrent protection devices
91.140.50 - Electricity supply systems
Note Supersedes EN 50310:2006
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 2010-10-15 2011-10-01 export to doc file  EN  FR  DE
5099 2010-10-01 2011-02-01  
5061 2010-08-25 2010-10-01  
5060 2010-07-12 2010-08-12 export to doc file  EN
5020 2010-05-07 2010-07-09 export to doc file  EN  FR  DE
4099 2010-03-15 2010-05-20  
4060 2009-10-22 2010-05-22 export to doc file  EN
4020 2009-05-15 2009-10-16 export to doc file  EN
3099 2009-03-12 2009-05-29  
3020 2008-07-24 2008-11-28  
2020 2008-04-09 2008-12-15  
1099 2007-09-01 2008-03-01  
1000 2007-04-18 2007-08-31  

Implementation Dates

date of Ratification (DOR) (1) 2010-10-01
date of Availability (DAV) (2) 2010-10-15
date of Announcement (DOA) (3) 2011-04-01
date of Publication (DOP) (4) 2011-10-01
date of Withdrawal (DOW) (5) 2013-10-01


Supersedes EN 50310:2006
Superseded by  
Normative reference (6)  

(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved

(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat

(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level

(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement

(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn

(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.