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GB 1002-2024: Single phase plugs and socket-outlets for household and similar purposes - Types, basic parameters and dimensions
GB 1002-2024
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 29.120.30
CCS K 30
Replacing GB/T 1002-2021
Single Phase Plugs and Socket-outlets for Household and
Similar Purposes - Types, Basic Parameters and Dimensions
ISSUED ON: JULY 24, 2024
IMPLEMENTED ON: AUGUST 1, 2025
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative References ... 5
3 Terms and Definitions ... 6
4 Technical Requirements ... 6
5 Test Methods ... 10
6 Implementation of Standard ... 12
Bibliography ... 30
Single Phase Plugs and Socket-outlets for Household and
Similar Purposes - Types, Basic Parameters and Dimensions
1 Scope
This document specifies the types, basic parameters and dimensions of single-phase plugs and
socket-outlets for household and similar purposes, and describes the corresponding test
methods.
This document is applicable to single phase plugs and socket-outlets for household and similar
purposes, with an AC frequency of 50 Hz, a rated voltage of 250 V and a rated current not
exceeding 32 A.
NOTE: examples of products, to which, the types and dimensions of this document are applicable
include:
---socket-outlets used in household scenarios;
---plugs provided with electrical equipment;
---plugs of direct plug-in equipment;
---fixed integrated AC-powered socket-outlets with a rated voltage of 220 V and for
conductive charging of electric vehicles;
---charging socket-outlets in centralized charging facilities for electric bicycles and electric
motorcycles.
2 Normative References
The contents of the following documents constitute indispensable clauses of this document
through the normative references in the text. In terms of references with a specified date, only
versions with a specified date are applicable to this document. In terms of references without a
specified date, the latest version (including all the modifications) is applicable to this document.
GB/T 1184-1996 Geometrical Tolerancing - Geometrical Tolerance for Features without
Individual Tolerance Indications
GB/T 2099.1-2021 Plugs and Socket-outlets for Household and Similar Purposes - Part 1:
General Requirements
GB/T 2099.3 Plugs and Socket-outlets for Household and Similar Purposes - Part 2-5: Particular
Requirements for Adaptors
GB/T 2900.70-2008 Electrotechnical Terminology - Electrical Accessories
3 Terms and Definitions
The terms and definitions defined in GB/T 2900.70-2008 and GB/T 2099.1-2021, and the
following are applicable to this document.
3.1 direct plug-in equipment
An equipment, in which, the power plug and the equipment shell constitute an integral part.
NOTE: examples of direct plug-in equipment include shavers with rechargeable batteries, night
lights mounted on electrical socket-outlets, plug-in transformers and power adapters, etc.
[source: GB 4943.1-2022, 3.3.3.1, modified]
4 Technical Requirements
4.1 General Requirements
4.1.1 Single phase plugs and socket-outlets for household and similar purposes are divided into
two basic types: two-pole ungrounded and two-pole grounded.
4.1.2 The types, basic parameters and dimensions of the single-phase plugs and socket-outlets
for household and similar purposes shall comply with the provisions of Figure 1 ~ Figure 6.
4.1.3 In addition to fixed socket-outlets, for mobile (portable) socket-outlets, converters and
appliance socket-outlets, arrangement and combination of the socket jack in Figure 2 and the
socket jack in Figure 4 are allowed, but the socket jack in Figure 2 and the socket jack in Figure
4 shall not overlap or be shared with each other. Figure 7 provides a schematic diagram.
NOTE 1: the arrangement and combination of socket jack here cannot be comprehended as adding
corresponding plug types.
NOTE 2: the schematic diagram in Figure 7 does not exclude other forms of combinations.
NOTE 3: examples of fixed socket-outlets include wall-mounted socket-outlets.
4.1.4 The position of the plug bush of two-pole grounded socket-outlets shall be such that when
facing the socket-outlets, the ground wire (E pole) is at the top, the neutral wire (N pole) is on
the left, and the phase wire (L pole) is on the right. The position of the pin of two-pole grounded
plugs shall correspond to that of the socket-outlets.
4.1.5 The single pin of a plug shall not undergo axial rotation that changes the type and position.
NOTE: axial rotation, for example, by twisting the pin, changes the two parallel-arranged pins of
the plug in Figure 1 to the position of the phase pole and neutral pole arrangement shown
in Figure 3.
4.1.6 The strength of the inner frame of the fixed pin of non-rewireable plug shall be able to
ensure the stability of the pin size, and the type and dimensions shall comply with the
requirements of the corresponding dimensional drawings.
4.2 Plugs
4.2.1 Plug shape
The shape of the plugs is not specified, but the distance between the root of the live pin of the
plugs and the edge of the plugs shall not be less than 6.5 mm.
NOTE 1: if there is an insulating sheath, then, take the metal pin after the insulating sheath is peeled
off as the root.
NOTE 2: if the mating surface of the plug is not a plane, then, from a plane that passes through the
highest point of the mating surface and is perpendicular to the axis of the plug, the line
that is offset 1 mm towards the direction of the plug body and intersects the surface of
the body is regarded as the edge of the plug. An example is the B value in Figure 8.
The protruding part of the plug mating surface shall not exceed 0.5 mm. The length of the plug
pin shall be measured from the vertical plane of the pin at the highest point of the plug mating
surface, till the top of the pin.
NOTE 3: examples of “protrusions” include the electrical parameters and trademarks, etc. formed
by the injection molding of the plug mating surface, or other appearance structures that
may affect the plug mating.
NOTE 4: for plugs with functional parts on the mating surface, when inserted into the socket-outlet,
the gap between the plug mating surface and the socket-outlet surface does not exceed 1
mm.
NOTE 5: the length of the plug pin is considered to be the effective length of the metal pin part
inserted into the socket-outlet.
4.2.2 Insulating sheath of pin
4.2.2.1 The live pin of the plug shall have an insulating sheath.
NOTE: the insulating sheath can adopt processes, such as: insert injection molding and adhesive
backing, etc.
4.2.2.2 For the plug in Figure 1, the height of the insulating sheath shall be 7.0൅0.50 mm; for the plug in Figure 3 and Figure 5, the height of the insulating sheath shall be 9.0൅0.50 mm; see
diagram G in Figure 9.
4.2.2.3 After removing the insulating sheath, the thickness (t) of the plug body is shown in
4.3.1 The type and dimensions of plugs of the direct plug-in equipment shall comply with the
requirements of this document.
4.3.2 The insulating sheath (if any) of the plugs of the direct plug-in equipment shall cover the
root of the metal part of the exposed pin.
There shall be no gap between the insulating sheath and the equipment shell, causing the metal
root of the live pin to be exposed. If in doubt, check through the test in 5.4. During the test, the
probe shall not touch the live pin.
NOTE: this requirement only applies to the assessment of the plug part. ...