IEC 60670-1:2015

Boxes and enclosures for electrical accessories for household and similar fixed electrical installations - Part 1: General requirements

IEC 60670-1:2015 applies to boxes, enclosures and parts of enclosures (hereafter called "boxes" and "enclosures") for electrical accessories with a rated voltage not exceeding 1 000 V a.c. and 1 500 V d.c. intended for household or similar fixed electrical installations, either indoors or outdoors. This second edition cancels and replaces the first edition published in 2002 and its Amendment 1:2011. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: Review of classification Table 1.

Boîtes et enveloppes pour appareillage électrique pour installations électriques fixes pour usages domestiques et analogues - Partie 1: Exigences générales

L'IEC 60670-1:2015 s'applique aux boîtes, parties d'enveloppes et enveloppes (ci-après désignées par les termes "boîtes" et "enveloppes") destinées à des appareillages électriques ayant une tension assignée ne dépassant pas 1 000 V en courant alternatif et 1 500 V en courant continu prévus pour des installations électriques fixes à usages domestiques ou analogues, pour l'intérieur ou pour l'extérieur. Cette deuxième édition annule et remplace la première édition parue en 2002 et son Amendement 1:2011. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: révision du Tableau 1 - Classification.

General Information

• Status: Published
• Publication Date: 09-Mar-2015
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 29.120.10 - Conduits for electrical purposes
• Technical Committee: SC 23B - Plugs, socket-outlets and switches
• Drafting Committee: MT 5 - TC 23/SC 23B/MT 5
• Current Stage: PPUB - Publication issued
• Start Date: 15-Mar-2015
• Completion Date: 10-Mar-2015

Relations

• Revises: IEC 60670-1:2002 - Boxes and enclosures for electrical accessories for household and similar fixed electrical installations - Part 1: General requirements
• Effective Date: 05-Sep-2023
• Revises: IEC 60670-1:2002/AMD1:2011 - Amendment 1 - Boxes and enclosures for electrical accessories for household and similar fixed electrical installations - Part 1: General requirements
• Effective Date: 05-Sep-2023
• Revises: IEC 60670-1:2002/COR1:2003 - Corrigendum 1 - Boxes and enclosures for electrical accessories for household and similar fixed electrical installations - Part 1: General requirements
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60670-1 ®
Edition 2.0 2015-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Boxes and enclosures for electrical accessories for household and similar fixed
electrical installations –
Part 1: General requirements
Boîtes et enveloppes pour appareillage électrique pour installations électriques
fixes pour usages domestiques et analogues –
Partie 1: Exigences générales
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IEC 60670-1 ®
Edition 2.0 2015-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Boxes and enclosures for electrical accessories for household and similar fixed

electrical installations –
Part 1: General requirements
Boîtes et enveloppes pour appareillage électrique pour installations électriques

fixes pour usages domestiques et analogues –

Partie 1: Exigences générales
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.10 ISBN 978-2-8322-2337-6

– 2 – IEC 60670-1:2015 © IEC 2015

CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 General requirements . 11
5 General notes on tests . 11
6 Ratings . 11
7 Classification . 12
8 Marking . 13
9 Dimensions. 14
10 Protection against electric shock . 14
11 Provision for earthing . 15
11.1 Boxes and enclosures with exposed conductive parts . 15
11.2 Boxes and enclosures of insulating material classified according to 7.2.2.2
and 7.2.2.3 . 16
11.3 Boxes or enclosures with removable sides according to 7.1.2 . 17
11.4 Earthing terminal threads . 17
12 Construction . 18
12.1 General . 18
12.2 Lids, covers or cover-plates or parts of them . 18
12.2.1 General . 18
12.2.2 Screw-type fixing . 18
12.2.3 Non-screw-type fixing operable without the use of a tool or a key . 18
12.2.4 Non screw-type fixing operable with the use of a tool or a key . 24
12.3 Drain holes . 25
12.4 Mounting of enclosures . 25
12.5 Boxes and enclosures with inlets for flexible cables . 25
12.6 Boxes and enclosures with inlets for applications other than flexible cables . 25
12.7 Boxes and enclosures with a cable anchorage(s) . 26
12.8 Boxes and enclosures with cable retention means . 27
12.9 Knock-outs intended to be removed by mechanical impact . 28
12.9.1 General . 28
12.9.2 Knock-out retention . 28
12.9.3 Knock-out removal . 28
12.9.4 Flat surfaces surrounding knock-outs . 29
12.10 Screw fixings . 29
12.11 Fixing of boxes and enclosures classified according to 7.2.1 . 30
12.12 Fixing of flush type and semi-flush type boxes and enclosures classified
according to 7.2.2.1 . 33
12.13 Boxes and enclosures classified according to 7.2.2.2 and 7.2.2.3 . 34
12.13.1 General . 34
12.13.2 Boxes intended for mounting on a wood structural member of a wall . 35
12.13.3 Boxes intended for mounting to a wooden structural member of a ceiling . 35
12.13.4 Boxes intended for mounting to a steel-stud structural member of a wall . 35

12.13.5 Internal volume of boxes and enclosures classified according to 7.2.2.2
and 7.2.2.3 . 36
12.13.6 Boxes intended for mounting in a finished structure . 37
12.14 Cable gland entry . 37
12.15 Boxes and enclosures with inlets (outlets) or spouts (hubs) for conduits . 38
12.16 Internal volume of boxes and enclosures . 38
13 Resistance to ageing, protection against ingress of solid objects and against
harmful ingress of water . 39
13.1 Resistance to ageing . 39
13.2 Protection against the ingress of solid objects . 41
13.3 Protection against harmful ingress of water . 42
14 Insulation resistance and electric strength . 47
15 Mechanical strength . 49
15.1 General . 49
15.2 Impact test at low temperature . 49
15.3 Compression test . 50
15.4 Impact test for boxes and enclosures . 51
15.5 Compression test for enclosures made of natural or synthetic rubber or a
mixture of both . 56
16 Resistance to heat . 58
16.1 Parts of insulating material necessary to retain current-carrying parts . 58
16.2 Parts of insulating material not necessary to retain current-carrying parts . 59
16.3 Boxes and enclosures of insulating materials classified according to 7.2.2.2
or 7.2.2.3 . 59
16.3.1 Mechanical strength.
...