EN 60719:1993

Calculation of the lower and upper limits for the average outer dimensions of cables with circular copper conductors and of rated voltages up to and including 450/750 V

Specifies a method for the calculation of the lower and upper limits for the average outer diameter of cables and the outer dimensions of flat cords with circular copper conductors and of rated voltages up to and including 450/750 V.

Berechnung der unteren und oberen Grenzen der mittleren Außenmaße von Leitungen mit runden Kupferleitern und Nennspannungen bis 450/750 V

Calcul des valeurs minimales et maximales des dimensions extérieures moyennes des conducteurs et câbles à âmes circulaires en cuivre et de tension nominale au plus égale à 450/750 V

Spécifie une méthode de calcul des limites inférieures et supérieures des diamètres extérieurs moyens pour les conducteurs et câbles, ainsi que les dimensions extérieures des câbles souples méplats à âmes circulaires en cuivre pour une tension nominale au plus égale à 450/750 V.

Izračun spodnjih in zgornjih mej za povprečne zunanje mere kablov z okroglimi bakrenimi vodniki in naznačenimi napetostmi do vključno 450/750 V (IEC 60719:1992)

General Information

• Status: Published
• Publication Date: 18-Aug-1993
• Withdrawal Date: 28-Feb-1994
• Technical Committee: CLC/TC 20 - Electric cables
• Drafting Committee: IEC/TC 20 - IEC_TC_20
• Parallel Committee: IEC/TC 20 - IEC_TC_20
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 19-Aug-1993
• Completion Date: 19-Aug-1993
• Directive: Not Harmonized2006/95/EC - Directive 2006/95/EC of the European Parliament and of the Council of 12 December 2006 on the harmonisation of the laws of Member States relating to electrical equipment designed for use within certain voltage limits (codified version)
  OJ Ref: C 71/, C 71/17, C 348/03 OJ Date: 28-Nov-2013
• Directive:

  ---

  Harmonized Standard2014/35/EU - Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits
  OJ Ref: C 249/03 OJ Date: 08-Jul-2016
• Directive:

  ---

  Not Harmonized73/23/EEC - Electrical equipment designed for use within certain voltage limits
  OJ Ref: C 208
• Ref Project: SIST EN 60719:1998 - Calculation of the lower and upper limits for the average outer dimensions of cables with circular copper conductors and of rated voltages up to and including 450/750 V (IEC 60719:1992)

Relations

• Referred By: EN 61138:1997 - Cables for portable earthing and short-circuiting equipment
• Effective Date: 03-Feb-2026
• Referred By: EN 50214:2006 - Flat polyvinyl chloride sheathed flexible cables
• Effective Date: 03-Feb-2026
• Referred By: EN 60669-1:1995 - Switches for household and similar fixed electrical installations - Part 1: General requirements
• Effective Date: 03-Feb-2026

Overview

EN 60719:1993 is a European Standard published by CLC (CENELEC) that specifies a standardized calculation method to determine the lower and upper limits for the average outer dimensions of cables with circular copper conductors, rated up to and including 450/750 V. This standard covers both the average outer diameter of circular cables and the outer dimensions of flat cords within the specified voltage range.

The standard is designed to ensure consistency and compatibility in the cable industry by providing clear guidelines for dimension calculation. These calculations are crucial for manufacturing quality control, verifying compliance with relevant specifications, and ensuring interoperability between cable products used throughout Europe and other regions.

Key Topics

• Scope of Application

  • Applies to cables with circular copper conductors.
  • Relevant for cables and flat cords rated at voltages up to and including 450/750 V.
  • Excludes mineral-insulated cables.

• Calculation Method

  • Provides a systematic approach to calculate the lower (Dmin) and upper (Dmax) limits of average outer diameters for cables.
  • Details mathematical procedures involving:
    • Conductor diameter selection from reference tables,
    • Addition of insulation and sheath thicknesses,
    • Use of assembly coefficients based on the number of cores.

• Mandatory Coverings

  • Specifies values for thicknesses of insulation, sheaths, and mandatory coverings such as textile or metal braids, which contribute to the overall dimensions.

• Rounding Rules

  • Describes procedures for rounding calculated dimensions to ensure consistent reporting across the industry.

Applications

EN 60719:1993 is essential for professionals involved in the design, manufacturing, and quality assurance of low-voltage cables. Its applications include:

• Cable Manufacturing
  Manufacturers use this standard to determine acceptable dimensional ranges when producing cables. This enables consistency in product sizing, ensuring cables fit prescribed installation spaces and connectors.

• Product Compliance and Quality Control
  Testing laboratories and quality assurance teams reference this standard to verify whether cables conform to declared specifications for outer dimensions, which is critical for meeting regulatory, safety, and performance requirements.

• Standards Development and Procurement
  Cable specifications in regional and national standards, as well as in procurement documents for construction and infrastructure projects, frequently refer to EN 60719 to ensure product compatibility and interchangeability.

• Installation and System Integration
  Installers and system designers rely on the outer dimension calculations to plan installations, manage cable management systems, and predict cable tray fill rates.

Related Standards

Professionals referencing EN 60719:1993 may also consider the following related standards for comprehensive cable specification and design:

• IEC 60719
  The international basis for EN 60719-provides the underlying methodology for outer dimension calculation.

• IEC 502
  (Now typically replaced by newer cable standards) - Describes methods for calculating the sheath thickness of cables with extruded solid dielectric insulation.

• EN 50525 Series
  Covers requirements for cables with a rated voltage up to 450/750 V, detailing types, constructions, and testing.

• EN 60332
  Details requirements for flame retardant properties of cables, which can impact design and protective coverings.

Practical Value

By following EN 60719:1993, cable manufacturers, suppliers, and users ensure dimensional conformity and compatibility, reduce installation errors, and improve the safety and reliability of electrical systems. The standard's calculation methods support regulatory compliance and facilitate the integration of low-voltage cables in residential, commercial, and industrial environments, promoting harmonization across the European electrical and construction industries.

Keywords: EN 60719, cable dimension calculation, copper conductor cables, rated voltage 450/750 V, outer diameter of cables, low-voltage cable standards, CLC, cable manufacturing, cable quality control, cable standards compliance.

Standards Content (Sample)

SLOVENSKI STANDARD
01-februar-1998
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Calculation of the lower and upper limits for the average outer dimensions of cables with
circular copper conductors and of rated voltages up to and including 450/750 V (IEC
60719:1992)
Berechnung der unteren und oberen Grenzen der mittleren Außenmaße von Leitungen
mit runden Kupferleitern und Nennspannungen bis 450/750 V (IEC 60719:1992)
Calcul des valeurs minimales et maximales des dimensions extérieures moyennes des
conducteurs et câbles à âmes circulaires en cuivre et de tension nominale au plus égale
à 450/750 V (CEI 60719:1992)
Ta slovenski standard je istoveten z: EN 60719:1993
ICS:
29.060.20 Kabli Cables
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

CEI
NORME
IEC
INTERNATIONALE
INTERNATIONAL
Deuxième édition
STANDARD
Second edition
1992-03
Calcul des valeurs minimales et maximales
des dimensions extérieures moyennes
des conducteurs et câbles à âmes circulaires
en cuivre et de tension nominale
au plus égale à 450/750 V
Calculation of the lower and upper limits
for the average outer dimensions of cables
with circular copper conductors and
of rated voltages up to and including 450/750 V
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized
utilisée sous quelque forme que ce soit et par aucun procédé, in any form or by any means, electronic or mechanical,
électronique ou mécanique, y compris la photocopie et les including photocopying and microfilm, without permission
microfilms, sans l'accord écrit de l'éditeur. in writing from the publisher
Bureau central de la Commission Electrotechnique Inte rnationale 3, rue de Varembé Genève Suisse
Commission Electrotechnique Internationale CODE PRIX
G
International Electrotechnical Commission PRICE CODE
IEC
MeiNnyHapoAHaR 3neKTpoîexHN4ecnan HoMHccwl
Pour prix, voir catalogue en vigueur
•
For price, see current catalogue

719©IEC - 3 -
INTERNATIONAL ELECTROTECHNICAL COMMISSION
CALCULATION OF THE LOWER AND UPPER LIMITS
FOR THE AVERAGE OUTER DIMENSIONS
OF CABLES WITH CIRCULAR COPPER CONDUCTORS
AND OF RATED VOLTAGES UP TO
AND INCLUDING 450/750 V
FOREWORD
1) The formal decisions or agreements of the IEC on technical matters, prepared by Technical Committees on
which all the National Committees having a special interest therein are represented, express, as nearly as
possible, an international consensus of opinion on the subjects dealt with.
They have the form of recommendations for international use and they are accepted by the National
2)
Committees in that sense.
3) In order to promote international unification, the IEC expresses the wish that all National Committees
should adopt the text of the IEC recommendation for their national rules in so far as national conditions will
permit. Any divergence between the IEC recommendation and the corresponding national rules should, as
far as possible, be clearly indicated in the latter.
This International Standard has been prepared by Sub-Committee 20B: Low-voltage
cables, of IEC Technical Committee No. 20: Electric cables.
This second edition of IEC 719 replaces the first edition issued in 1981.
The text of this standard is based on the following documents:
DIS Report on Voting
20B(CO)113 20B(CO)123
Full information on the voting for the approval of this standard can be found in the Voting
Report indicated in the above table.

719©IEC -5-
CALCULATION OF THE LOWER AND UPPER LIMITS
FOR THE AVERAGE OUTER DIMENSIONS
OF CABLES WITH CIRCULAR COPPER CONDUCTORS
AND OF RATED VOLTAGES UP TO
AND INCLUDING 450/750 V
1 General
1.1 Scope
This International Standard specifies a method for calculation of the lower and upper limits
for the average outer diameter of cables and the outer dimensions of flat cords with
circular copper conductors and of rated voltages up to and including 450/750 V.
This standard is not applicable to mineral insulated cables. The method shall not be used
to calculate the diameter over the core assembly for determining the sheath thickness; the
method given in Appendix A of IEC 502 shall be used for this purpose.
NOTES
1 It is stressed that the conductor diameters given in the tables are intended only for use in this standard
as a basis for calculation and are not intended for verification by measurement.
2 The factors given in 2.5 and 3.1 of this standard may be varied in preparing standards for cables in
which the number of cores, the hardness of the insulation, precise positioning of the conductors or other
factors may affect the dimensional tolerances permissible.
1.2 Normative references
The following normative document contains provisions which, through reference in
...