Standard No.:	GB/T 2099.1-2021
English Name:	Plugs and socket-outlets for household and similar purposes—Part 1: General requirements
Chinese Name:	家用和类似用途插头插座 第1部分：通用要求
Chinese Classification:	K30    Low voltage apparatus in general
Professional Classification:	GB    National Standard
ICS Classification:	29.120.30 29.120.30    Plugs, socket -outlets, couplers 29.120.30
Issued by:	SAMR, SAC
Issued on:	2021-10-11
Implemented on:	2022-11-1
Status:	valid
Superseding:	GB 2099.1-2008 Plugs and socket-outlets for household and similar purposes - Part 1: General requirements
Language:	English
File Format:	PDF
Word Count:	57500 words
Price(USD):	920.0
Delivery:	via email in 1 business day

Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. This document is developed in accordance with the rules given in GB/T 1.1-2020 Directives for standardization — Part 1: Rules for the structure and drafting of standardizing documents. This document is Part 1 of GB/T 2099 Plugs and socket-outlets for household and similar purposes. The following parts of GB/T 2099 have been published: ——Part 1: General requirements; ——Part 2: Particular requirements: Special requirements for socket-outlets for appliances; Special requirements for converters; Special requirements for fixed non-interlocking socket-outlets with switches; Special requirements for fixed interlocking socket-outlets with switches; Special requirements for plugs with fuses; Special requirements for cord extension set; Special requirements for safe extra low voltage (SELV) plugs and socket-outlets; Special requirements for information socket-outlets. This document replaces GB/T 2099.1-2008 Plugs and socket-outlets for household and similar purposes — Part 1: General requirements. Compared with GB/T 2099.1-2008, besides structural adjustment and editorial changes, the main technical changes of this document are as follows: ——The ambient temperature of product use has been modified (see Clause 1; Clause 1 of Edition 2008); ——The partial references have been modified (see Clause 2; Clause 2 of Edition 2008); ——The definitions of 3.1 plug, 3.2 socket-outlet, 3.4 portable socket-outlet, 3.16 screw-type terminal and 3.33 main part have been modified; the definitions of 3.34 grommet, 3.35 entry membrane, 3.36 protecting membrane and 3.37 tool have been added; according to GB/T 2099.2-2012, the definition of subclause 3.6 has modified (see Clause 3; Clause 3 of 2008 Edition); ——The torque applied to the fixing screws of terminals, covers and cover plates has been increased (see 5.2); ——The preferred combination of ratings in Table 1 has been modified; Note 1 has been modified, and Notes 2 and 3 have been added (see Table 1, 2008 Edition); ——Subclause 6.3 of GB/T 2099.1-2008 has been deleted (see 6.3 of 2008 Edition); ——The modification of classification of protection degree in 7.1.1 and 7.1.2 shall refer to GB/T 4208-2017 (see 7.1.1 and 7.1.2; 7.1.1 and 7.1.2 in 2008 Edition); ——The word "main part" has been deleted from the note of 7.2.4 (see 7.2.4 in 2008 Edition); ——The classification of plugs for Category 0 equipment has been deleted (see 7.3 of 2008 Edition); ——The symbols requirements of "neutral pole, grounding pole and live connections” have been deleted; the requirement of protection degree symbol for fixed socket-outlets has been added; the requirement of marking the number of this Part has been added (see 8.1 of 2008 Edition); ——The marking requirement that screwless terminal is only suitable for rigid conductors has been added (see 8.3); ——The identification requirements of products with protection degree requirements have been modified (see 8.6; 8.6 of 2008 Edition); ——Conditions for visual inspection of signs have been added; the wiping test method of signs has been changed (see 8.8); ——The expression "plugs of the existing plug and socket-outlet system in China” has been added; the plug requirements for Class 0 equipment have been deleted (see 9.2); ——Paragraph 1 of 10.1 specifies the requirements for fixed socket-outlets, plugs and portable socket-outlets when plugged in; the description of "partial plug-in" inspection in Paragraph 2 has been deleted (see 10.1; 10.1 of 2008 Edition); ——"Base” has been modified into "main part" (see 10.2, 13.7, 17.2.1, Clause 24, 26.1 and Table 24; 10.2, 13.7, 17.2.1, Clause 24, 26.1 and Table 24 of 2008 Edition). ——"Metal cover and cover plate" has been changed to "accessible metal part" (see 10.2.3; 10.2.1 and 10.2.2 of 2008 Edition); ——The test and inspection in 10.2 have been added (see 10.4); ——The design requirements for shutters have been added; for socket-outlets with or without shutters, plug insertion is the same movement (see 10.5); ——According to the structural characteristics of socket-outlets in China, the test method has been deleted (see 10.6 of 2008 Edition); ——The requirements for protection against electric shock of socket-outlets with or without covers have been specified; the note of socket-outlets without shutters has been added (see 10.7); ——The description of additional external grounding terminal of fixed socket-outlet has been deleted (see 11.2 of 2008 Edition); ——The current and type of electrical accessories have been changed (see Table 3; Table 3 of 2008 Edition); ——The words "during wire insertion" behind the first dash of 12.3.7 has been deleted, and "during connection" has been added after the second dash (see 12.3.7 of 2008); ——The measurement period of voltage drop of screwless terminal has been changed in item b) of 12.3.11 (see 12.3.11; 12.3.11 of 2008 Edition); ——Requirements for the components of the socket-outlet contact assembly have been added (see 13.1); ——The material and test requirements of contacts of socket-outlets have been added (see 13.2); ——The structural requirements of socket-outlets and the test method for connecting and/or disconnecting devices of screwless terminal have been added (see 13.4); ——The situation that drainage holes and small gaps will not cause damage to the nominal IP grade has been specified (see 13.9); ——The "IPX4 and IPX5" has been changed to "IPX4 to IPX6" (see 13.16; 13.16 of 2008 Edition); ——The technical requirements for contacts have been modified (see 13.18; 13.18 of 2008 Edition); ——The rated current value, nominal cross-sectional area and other parameters have been changed (see Table 14; Table 14 of 2008 Edition); ——Requirements for pins and contacts of portable electrical accessories have been added (see 14.3); ——“These regulations are the requirements for rewirable portable socket-outlets” has been specified; the requirement of phase contacts has been added (see 14.4); ——The requirements for materials and tests for socket-outlet contacts and pins have been added (see 14.6); ——Requirements for components installed in electrical accessories have been added (see 14.22); ——The requirements of rewirable portable socket-outlets in the process of being fixed have been added (see 14.26); ——The test conditions of electrical accessories with covers have been modified and improved (see 16.1; 16.1 in 2008 Edition); ——The requirements of electrical accessories with the first characteristic number of 6 have been added (see 16.2.2.3); ——Test methods and requirements on temperature rise test in Clause 19 have been modified (see Clause 19; Clause 19 of Edition 2008); ——Notes on the dimensions of connecting cables of portable socket-outlets have been added to Tables 17 and 19 (see Tables 17 and 19); ——Flexible cables with larger wire diameter have been added in the last column of Table 18 (see Table 18); ——According to the characteristics of flat pin system in China, the pull-out force test requirements of foreign plug products have been deleted (see Clause 22 of 2008 Edition); ——The description that the rewirable plug and rewirable portable socket-outlet are equipped with flexible cables meeting the requirements of GB/T 5023 and GB/T 5013 has been added (see 23.3); ——The description of pendulum impact test equipment has been deleted and changed to directly refer to GB/T 2423.55 (Test EHA); the falling height in Table 21 has been modified (see 24.2; 24.1 of 2008 Edition); ——The test method standard of 24.3 has been changed from GB/T 2423.8 to GB/T 2423.7; the requirements of drop test for plugs with insulating sheath pins have been added. In addition, test requirements are put forward for the shutters (see 24.3; 24.2 of 2008 Edition); ——Test requirements for shutters have been put forward in 24.9 (see 24.9); ——The provisions on the round bolt for converters have been deleted (see 24.10 of 2008 Edition); ——The sample in the note of 25.3 has been changed the sample after aging test (see 25.3; 25.2 of 2008 Edition); ——The screws and nuts for increasing the transmission of contact pressure shall be made of metal (see 26.1); ——The note of 26.5 has been changed to Note 1, and IPX6 requirements have been added (see 26.5; 26.5 in 2008 Edition); ——Footnote f has been added in Table 24 (see Table 24); ——The description of main part has been deleted from Note 1 of 28.1.2; judgment instructions for current-carrying parts and grounding circuit parts have been added; Note 5 has been added (see 28.1.2; 28.1.1 of 2008 Edition); ——Static damp-heat test is conducted at 40°C of variable 2 (see 30.3; 30.2 of 2008 Edition); ——The subclause number in the title of Figure 15 had been deleted (see Figure 15; Figure 15 of 2008 Edition); ——The force values given in GB/T 2099.1-2008 have been deleted from Figure 16 (see Figure 16 in 2008 Edition); ——Figures 22 to 25 have changed into be void (see Figure 22 to 25); ——The annotations of "load a" and "load b" have been supplemented in Figure 41 (see Figure 41); ——In Figure 44, the layout position of the space for welding power cables has been adjusted according to the position of plugs and pins in China (see Figure 44; Figure 44 of 2008 Edition); ——Figure 45 and 46 have been added (see Figures 45 and 46); ——Annex B “the required number of tests" has been changed (See Annex B; Annex B of 2008 Edition). ——Annex D "Switches incorporated in portable socket-outlets" has been added to be normative (see Annex D). This part has been modified in relation to IEC 60884-1: 2013 Plugs and socket-outlets for household and similar purposes — Part 1: General requirements. Structural adjustments have been made to this standard with respect to IEC 60884-1: 2013. The subclause numbers of 10.2, 14.10, 14.23, Clause 17, Clause 19, Clause 22, Clause 24, Clause 25, 28.1 and Clause 30 have been adjusted to avoid suspension. Due to the existence of the second-level subclauses, the subclause titles of the first-level subclauses in Clauses 10, 13, 14 and 24 have been added. The main technical differences with respect to IEC 60884-1: 2013 are as follows: ——The adjustments on technical differences have been made for the normative references of this standard to adapt to the technical conditions in China, which are mainly reflected in Clause 2 "Normative references”, with the following specific content: IEC 60668-2-30 is replaced by GB/T 2423.4, which is identical to the international standard; IEC 60068-2-31 is replaced by GB/T 2423.7, which is identical to the international standard; IEC 60068-2-75 is replaced by GB/T 2423.55, which is identical to the international standard; IEC 60050-151: 2001 is replaced by GB/T 2900.83, which is identical to the international standard; IEC 60112: 1979 is replaced by GB/T 4207, which is identical to the international standard; IEC 60529：2001 is replaced by GB/T 4208-2017, which is identical to the international standard; ISO 60245 (all parts) is replaced by GB/T 5013 (all parts), which is identical to the international standard; ISO 60227 (all parts) is replaced by GB/T 5023 (all parts), which is identical to the international standard; IEC 60695-2-10: 2000 is replaced by GB/T 5169.10, which is identical to the international standard; IEC 60695-2-11: 2000 is replaced by GB/T 5169.11, which is identical to the international standard; IEC 60417 is replaced by GB/T 5465.2, which is identical to the international standard; IEC 61058 (all parts) is replaced by GB/T 15092 (all parts), which is modified in relation to the international standard; IEC 61058-1 is replaced by GB/T 15092.1, which is modified in relation to the international standard; IEC 60669 (all parts) is replaced by GB/T 16915 (all parts), which is modified in relation to the international standard; IEC 61140: 2001 is replaced by GB/T 17045, which is identical to the international standard; IEC 60423: 1993 is replaced by GB/T 17194-1997, which is not equivalent to the international standard; ISO/IEC Guidance 51 is replaced by GB/T 20002.4, which is modified in relation to the international standard; GB/T 1002 is added for reference. GB/T 1003 is added for reference. ——According to the actual voltage and current situation of plugs and socket-outlets in China, Table 1 has been modified, and 130V and 13A have been deleted; 13A in Table 10 has been deleted. ——According to the type and size of plugs and socket-outlets in China, "single-phase plugs and socket-outlets shall meet the requirements of GB/T 1002" and "three-phase plugs and socket-outlets shall meet the requirements of GB/T 1003” have been added in Clause 9. ——Considering that the rated current of domestic three-phase plug and socket-outlet system in China is 25A, relevant content and requirements of electrical accessories with rated current of 25A have been added in relevant clauses and tables; ——Considering that domestic plugs and socket-outlets in China are used for the flat pin system, special inspection content for domestic plugs and socket-outlets in China have been added in Clause 9 “Dimension Inspection”, 24.3, 24.11, Figure 30 and other related clauses, and the gauge tolerance for dimension inspection has been modified; ——According to the characteristics of flat pin system in China and the regulations of flat pin system in foreign countries, the description of "partial insertion" inspection in Paragraph 2 of 10.1 has been deleted; ——According to the socket-outlet type in China, the description of the pin in the fixed socket-outlet has been deleted in 13.2; ——9.2 and 10.1 stipulate that for electrical accessories made of thermoplastic or elastic materials, additional tests shall be conducted at the ambient temperature of (35±2)°C. Considering the harsh ambient temperature in China, "(35±2)°C" is changed to "(40±2)°C". ——According to the structural characteristics of socket-outlets in China, the test method of 10.6 has been deleted; the additional samples required for the test of 10.6 in Annex B have been deleted. ——According to the types and parameters of plugs and socket-outlets in China, the current and types of electrical accessories have been modified in Table 3; ——According to the actual structure of the product, 14.4 specifies that this subclause is a requirement for rewirable portable socket-outlets; ——16.3 stipulates: "the air temperature (of the damp box) shall be maintained at any convenient value t±1K between 20°C and 30°C. The temperature of the sample shall be between t~(t+4)°C before put into the damp box." Considering that some areas in China are in a humid tropical climate, and electrical and electronic products are tested at (40±2)°C, this part stipulates: "The air temperature at the place where the sample is placed shall be maintained at (40±2)°C. Before putting the sample into the damp box, make the temperature of the sample reach this temperature. " This regulation is consistent with the severity level adopted by GB/T 2423.4, which is developed by modification in relation to the international standard IEC 60068-2-30. ——In 19.3, temperature rise test of multiple socket-outlet with the common terminal has been modified; ——The test items in Clauses 20, 21 and 22 that are not applicable to plugs and socket-outlets in China have been deleted; ——In Clause 22, according to the characteristics of flat pin system in China, the pull-out force test requirements of foreign plug products have been deleted; ——According to the actual wiring situation of rewirable plugs and rewirable portable socket-outlets in China, the description of flexible cables equipped with the requirements of China's wire standards has been added in 23.3; ——In Table 20, the columns that are not applicable to the current and voltage levels of plugs and socket-outlets in China have been deleted; the rated value "25A 440V" and its corresponding parameters have been added. ——The drop test requirements for plugs with insulating sheath pins have been added in in 24.3; ——In Figure 44, according to the position of plugs and pins in China, the layout position of space for welding power cables has been adjusted. The following editorial changes have been made in this document: ——According to the relevant provisions of GB/T 1.1-2020, in Clause 1, the "Scope" is supplemented with "This document specifies the technical requirements for marking, protection against electric shock, structure, electrical performance and mechanical performance of plugs and socket-outlets for household and similar purposes"; ——Notes (such as Notes in 6.1, 7.1.5, 7.2.2, 10.7, 13.23, 14.4, 14.21 and 14.26, Note 4 in 8.34, Note 2 in 10.2.3, Note 2 in 10.3, Note 4 in 16.2.2, Note 7 in Clause 19, Note 4 in Table 20 and Notes in 28.2) not applicable to China have been deleted. ——The items listed in 13.7.3 have been modified to alphabetic items for reference to the new titles of new subclause in Clause 24. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. The issuing body of this standard shall not be held responsible for identifying any or all such patent rights. This document was proposed by China Electrical Equipment Industry Association. This part is under the jurisdiction of SAC/TC 67 National Technical Committee on Electrical Accessories of Standardization Administration of China. The previous editions of this standard are as follows: ——It was first issued as GB 2099-1980 in 1980; ——It was first revised to GB 2099.1-1996 in 1996, and second revised in 2008; ——This is the third revision. Plugs and socket-outlets for household and similar purposes — Part 1: General requirements 1 Scope This document specifies the technical requirements for the marking, protection against electric shock, structure, electrical performance and mechanical performance of plugs and socket-outlets for household and similar purposes. This document applies to plugs and fixed or portable socket-outlets for A.C. only, with or without earthing contact, with a rated voltage greater than 50 V but not exceeding 440 V and a rated current not exceeding 32 A, intended for household and similar purposes, either indoors or outdoors. The rated current is limited to 16A maximum for fixed socket-outlets provided with screwless terminals. This standard does not cover requirements for flush mounting boxes: however, it covers only those requirements for surface-type mounting boxes which are necessary for the tests on the socket-outlet. Note 1: General requirements for mounting boxes are given in GB/T 17466. This standard also applies to plugs which are a part of cord sets, to plugs and portable socket-outlets which are a part of cord extension sets and to plugs and socket-outlets which are a component of an appliance, unless otherwise stated in the standard for the relevant appliance. This document is not applicable to: ——plugs, socket-outlets and couplers for industrial purposes; ——appliance couplers; ——plugs, fixed and portable socket-outlets for ELV; Note 2: ELV values are specified in GB/T 16895.21. ——fixed socket-outlets combined with fuses, automatic switches, etc. Note 3: Socket-outlets with pilot lights are allowed provided that pilot lights comply with the relevant standard, if any. Plugs and socket-outlets complying with this standard shall be suitable for use at ambient temperatures not normally exceeding +40°C, but their average over a period of 24h does not exceed +35°C, with a lower limit of the ambient air temperature of –5°C. Socket-outlets complying with this standard are only suitable for incorporation or mounting in equipment in such a way and in such a place that it is unlikely that the surrounding temperature exceeds 35°C. In locations where special conditions prevail, such as in ships, vehicles and the like and in hazardous locations, for example where explosions are liable to occur, special constructions may be required. 2 Normative reference The following documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 1002 Single phase plugs and socket-outlets for household and similar purposes — Types, basic parameters and dimensions GB/T 1003 Three phase plugs and socket-outlets for household and similar purposes — Types, basic parameters and dimensions GB/T 2423.4 Environmental testing for electric and electronic products — Part 2: Test method — Test Db: Damp heat, cyclic (12h+12h cycle) (GB/T 2423.4-2008, IEC 60668-2-30: 2005, IDT) GB/T 2423.7 Environmental testing — Part 2: Test methods — Test Ec: Rough handling shocks, primarily for equipment-type specimens (GB/T 2423.7: 2018，IEC 60068-2-31: 2008, IDT) GB/T 2423.55-2006 Environmental testing for electric and electronic products — Part 2: Test methods — Test Eh: Hammer tests (IEC 60068-2-75: 1997, IDT); GB/T 2900.83 Electrotechnical terminology — Electrical and magnetic devices (GB/T 2900.83-2008, IEC 60050-151: 2001, IDT) GB/T 4207 Method for the determination of the proof and the comparative tracking indices of solid insulating materials (GB/T, 4207-2012, IEC 60112: 2009, IDT) GB/T 4208-2017 Degrees of protection provided by enclosure (IP code) (IEC 60529:2013, IDT) GB/T 5013 (all parts) Rubber insulated cables of rated voltages up to and including 450/750V GB/T 5023 (all parts) Polyvinyl chloride insulated cables of rated voltages up to and including 450/750V GB/T 5169.10 Fire hazard testing for electric and electronic products — Part 10: Glowing/hot-wire based test methods — Glow-wire apparatus and common test procedure (GB/T 5169.10-2006, IEC 60695-2-10: 2013, IDT) GB/T 5169.11-2006 Fire hazard testing for electric and electronic products — Part 11: Glowing/hot-wire based test methods — Glow-wire flammability test method for end-products (GWEPT) (GB/T 5169.11-2017, IEC 60695-2-11: 2014, IDT) GB/T 5465.2 Graphical symbols for use on electrical equipment — Part 2: Graphical symbols (GB/T 5465.2-2008, IEC 60417 DB: 2007, IDT) GB 15092 (all parts) Switches for appliances [IEC 61058 (all parts)] GB/T 15092.1 Switches for appliances — Part 1:General requirements (GB/T 15092.1—2020，IEC 61058-1：2016，IDT) GB/T 16842—2016 Protection of persons and equipment by enclosures — Probe for verification (IEC 61032:1997, IDT) GB 16915 (all parts) Switches for household and similar fixed electrical installations GB/T 17194-1997 Conduits for electrical purposes — Outside diameters of conduits for electrical installations and threads of conduits and fittings (eqv IEC 60423: 1993) GB/T 20002.4-2015 Drafting for special aspects in standards — Part 4: Safety aspects for their inclusion in standards 3 Terms and definitions For the purposes of this document, the terms and definitions given in GB/T 2900.83 and the following apply. Note 1: Where the terms "voltage" and "current" are used, they imply r.m.s. values, unless otherwise specified. Note 2: Throughout this standard the word "earthing" is used for “protective earthing”. Note 3: The term "accessory" is used as a general term covering plugs and socket-outlets; the term "portable accessory" covers plugs and portable socket-outlets. Examples of the use of accessories are shown in Figure 1 a). Note 4: Throughout this standard the term "socket-outlet" covers both fixed and portable socket-outlets, except where the reference is specific to one type or the other. 3.1 plug accessory intended for frequent use by ordinary persons, having pins designed to engage with the contacts of a socket-outlet, also incorporating means for the electrical connection and mechanical retention of one flexible cable Note: For special purposes such as lighting chains (see also GB 7000.9), two or three single-core cables can be connected within the plug. Note: See 195-04-03 in GB/T 2900.73-2008 for “ordinary persons”. 3.2 socket-outlet accessory intended for frequent use by ordinary persons, having socket contacts designed to engage with the pins of a plug and having terminals or terminations for the connection of cable 3.3 fixed socket-outlet socket-outlet intended to be connected to fixed wiring 3.4 portable socket-outlet socket-outlet intended to be connected to or integral with one flexible cable and which can easily be moved from one place to another while connected to the supply 3.5 multiple socket-outlet combination of two or more socket-outlets Note: An example is shown in Figure 1 b). 3.6 socket-outlet for appliances socket-outlet intended to be built in, or fixed to, appliances 3.7 rewirable plug or rewirable portable socket-outlet accessory so constructed that the flexible cable can be replaced 3.8 non-rewirable plug or non-rewirable portable socket-outlet accessory so constructed that it forms a complete unit with the flexible cable after connection and assembly by the manufacturer of the accessory (see 14.1) 3.9 moulded-on accessory non-rewirable portable accessory, the manufacture of which is completed by insulating material moulded around pre-assembled component parts and the terminations for the flexible cable [Source: GB/T 2900.70-2008, 442-01-14, modified] 3.10 mounting box box intended for mounting in or on a wall, floor or ceiling, etc., for flush or surface application, intended for use with fixed socket-outlet (s) 3.11 cord set assembly consisting of one flexible cable fitted with one plug and one single connector, intended for the connection of an electrical appliance to the electrical supply 3.12 cord extension set assembly consisting of one flexible cable fitted with one plug and one single or multiple portable socket-outlet 3.13 terminal insulated or non-insulated connecting device intended for reusable electrical connection of the external conductors 3.14 termination insulated or non-insulated connecting device intended for non-reusable electrical connection of the external conductors 3.15 clamping unit part or parts of a terminal necessary for the mechanical clamping and the electrical connection of the conductor (s) 3.16 screw-type terminal terminal for the connection and subsequent disconnection of one conductor or the interconnection and subsequent disconnection of two or more conductors, the connection being made, directly or indirectly, by means of screws or nuts of any kind 3.17 pillar terminal screw-type terminal in which the conductor is inserted into a hole or cavity, where it is clamped under the end of the screw or screws Note 1: Examples of pillar terminals are shown in Figure 2. Note 2: The clamping pressure may be applied directly by the end of the screw or through an intermediate clamping member to which pressure is applied by the end of the screw 3.18 screw terminal screw-type terminal in which the conductor is clamped under the head of the screw. The clamping pressure may be applied directly to the head of a screw or through an intermediate part, such as a washer, clamping plate or anti-spread device Note: Examples of screw terminals are shown in Figure 3. 3.19 stud terminal screw-type terminal in which the conductor is clamped under a nut Note 1: Examples of stud terminals are shown in Figure 3. Note 2: The clamping pressures may be applied directly by a suitably shaped nut or through an intermediate part, such as a washer, clamping plate or anti-spread device. 3.20 saddle terminal screw-type terminal in which the conductor is clamped under a saddle by means of two or more screws or nuts Note: Examples of saddle terminals are shown in Figure 4. 3.21 mantle terminal screw-type terminal in which the conductor is clamped against the base of a slot in a threaded stud by means of a nut. Note 1: Examples of mantle terminals are shown in Figure 5. Note 2: The conductor is clamped against the base of the slot by a suitably shaped washer under the nut, by a central peg if the nut is a cap nut, or by equally effective means for transmitting the pressure from the nut to the conductor within the slot. 3.22 screwless terminal connecting device for the connection and subsequent disconnection of a rigid (solid or stranded) or flexible conductor or the interconnection of two or more conductors, capable of being dismantled Note: The connection is made, directly or indirectly, by means of springs, parts of angled, eccentric or conical form, etc., without special preparation of the conductor concerned, other than removal of insulation 3.23 thread-forming screw screw having an uninterrupted thread, which by screwing in, forms a thread by displacing material Note: An example of a thread-forming screw is shown in Figure 6. 3.24 thread-cutting screw screw having an interrupted thread, which by screwing in, forms a thread by removing material Note: An example of a thread-cutting screw is shown in Figure 7. 3.25 rated voltage voltage assigned to the plug or socket-outlet by the manufacturer Note: The rated voltage will be specified in the relevant standard, if any. 3.26 rated current current assigned to the plug or socket-outlet by the manufacturer Note: The rated current will be specified in the relevant standard, if any. 3.27 shutter movable part incorporated into a socket-outlet arranged to shield at least the live socket contacts automatically when the plug is withdrawn 3.28 type test test of one or more devices made to a certain design to show that the design meets certain specifications 3.29 routine test test to which each individual device is subjected during and/or after manufacture to ascertain whether it complies with certain criteria 3.30 base part of the socket-outlet supporting the socket-contacts 3.31 live part conductor or conductive part intended to be energized in normal use, including a neutral conductor, but, by convention, not a PEN conductor [Source: GB/T 2900.71-2008, 826-12-08, modified] 3.32 cable anchorage that part of an accessory which has the ability to limit the displacement of a fitted flexible cable against pull, push and turning forces 3.33 main part assembly consisting of the base and other parts. Note: This assembly is not intended to be dismantled at any time after manufacture. 3.34 grommet component used to support and protect the cable or conduit at the point of entry Note: 1 It may also prevent the ingress of moisture or contaminants. Note: 2 Examples of membranes and grommets are shown in Figure 45. 3.35 entry membrane component or integral part of the accessory used to protect the cable Note 1: An entry membrane may also prevent the ingress of moisture or contaminants and may be part of a grommet. Note 2: Examples of membranes and grommets are shown in Figure 45. Note 3: It is used to support the cable or conduit at the point of entry. 3.36 protecting membrane component or integral part of the accessory that is not intended to be penetrated in normal use and is intended to provide protection against ingress of water or solid objects and/or to allow the operation of an accessory Note: Examples of membranes and grommets are shown in Figure 45. 3.37 tool screwdriver, coin or any other object that may be used to turn screws or similar fixing devices [Source: GB 4706.1-2005, 3.6.5] 4 General requirements Accessories and boxes of surface mounting accessories shall be so designed and constructed that, in normal use, their performance is reliable and safety is achieved by reducing risk to a tolerable level, as defined in GB/T 20002.4. Compliance is checked by meeting all the relevant requirements and tests specified.

Foreword vi 1 Scope 2 Normative reference 3 Terms and definitions 4 General requirements 5 General remarks on tests 6 Ratings 7 Classification 8 Marking 9 Checking of dimensions 10 Protection against electric shock 11 Provision for earthing 12 Terminals and terminations 13 Construction of fixed socket-outlets 14 Construction of plugs and portable socket-outlets 15 Interlocked socket-outlets 16 Resistance to ageing, protection provided by enclosures, and resistance to humidity 17 Insulation resistance and electric strength 18 Operation of earthing contacts 19 Temperature rise 20 Breaking capacity 21 Normal operation 22 Force necessary to withdraw the plug 23 Flexible cables and their connection 24 Mechanical strength 25 Resistance to heat 26 Screws, current-carrying parts and connections 27 Creepage distances, clearances and distances through sealing compound 28 Resistance of insulating material to abnormal heat, to fire and to tracking 29 Resistance to rusting 30 Additional tests on pins provided with insulating sleeves Annex A (Normative) Safety-related routine tests for portable accessories with as-delivered conductors (protection against electric shock and correct polarity) Annex B (Normative) List of specimens required for test Annex C (Informative) Alternative gripping tests Annex D (Normative) Switches incorporated in portable socket-outlets Annex E (Informative) Changes planned for the future in order to align IEC 60884-1 with the requirements of IEC 60228, IEC 60998 and IEC Bibliography Figure 1 Example of accessories Figure 2 Pillar terminals Figure 3 Screw terminals and stud terminals Figure 4 Saddle terminals Figure 5 Mantle terminals Figure 6 Example of thread-forming screw Figure 7 Example of thread-cutting screw Figure 8 Arrangement for compression test of Figure 9 Probe for checking non-accessibility of live parts, through shutters Figure 10 Probe for checking non-accessibility of live parts, through shutters, and of live parts of socket-outlets with increased protection Figure 11 Device for checking damage to conductors Figure 12 Schematic diagram for deflection test Figure 13 Device for checking the resistance to lateral strain Figure 14 Device for testing non-solid pins Figure 15 Test wall in accordance with the requirements of 16. Figure 16 Apparatus for breaking capacity and normal operation test Figure 17 Circuit diagrams for breaking capacity and normal operation tests Figure 18 Apparatus for verification of maximum withdrawal force Figure 19 Gauge for the verification of minimum withdrawal force Figure 20 Apparatus for testing cord retention Figure 21 Apparatus for flexing test Figure 22 Void Figure 23 Void Figure 24 Void Figure 25 Void Figure 26 Sketches showing the application of the blow according to table Figure 27 Apparatus for impact test at low temperature of Figure 28 Apparatus for abrasion test on insulating sleeves of plug pins Figure 29 Apparatus for mechanical strength test on multiple portable socket-outlets Figure 30 Test apparatus to verify the fixation of pins in the body of the plug Figure 31 Test apparatus for covers or cover-plates Figure 32 Gauge (thickness about 2 mm) for the verification of the outline of covers or cover-plates Figure 33 Examples of application of the gauge of Figure 32 on covers fixed without screws on a mounting surface or supporting surface Figure 34 Examples of application of the gauge of Figure 32 in accordance with the requirements of Figure 35 Gauge for verification of grooves, holes and reverse tapers Figure 36 Sketch showing the direction of application of the gauge of Figure Figure 37 Ball pressure test apparatus Figure 38 Apparatus for compression test for the verification of resistance to heat of Figure 39 Diagrammatic representation of 28. Figure 40 Apparatus for testing resistance to abnormal heat of insulating sleeves of plug pins Figure 41 Apparatus for pressure test at high temperature Figure 42 Impact test apparatus on pins provided with insulating sleeves Figure 43 Test procedure for normal operation (see Clause 21) Figure 44 Schematic diagram of clamping elements for the temperature rise test of Clause Figure 45 Examples of membranes and grommets Figure 46 Verification of the requirements of Figure C. 1 Reference plug for gripping test Figure C. 2 Example of the test apparatus for plug gripping test Table 1 Preferred combinations of types and ratings Table 2 Gauge tolerances Table 3 Relationship between rated current and connectable nominal cross-sectional areas of copper conductors Table 4 Values for pull test for screw-type terminals Table 5 Composition of conductors Table 6 Tightening torques for the verification of the mechanical strength of screw-type terminals Table 7 Relationship between rated current and connectable cross-sectional areas of copper conductors for screwless terminals Table 8 Value for pull test for screwless-type terminals Table 9 Values for flexing under mechanical load test for copper conductors Table 10 Test current for the verification of electrical and thermal stresses in normal use for screwless terminals Table 11 Nominal cross-sectional areas of rigid copper conductors for deflection test of screwless terminals Table 12 Deflection test forces for screwless terminals Table 13 Forces to be applied to covers, cover-plates or actuating members whose fixing is not dependent on screws Table 14 External cable dimension limits for surface-type socket-outlets Table 15 Nominal cross-sectional areas of copper conductors for the temperature-rise test Table 16 Maximum and minimum withdrawal force for plugs and socket-outlets Table 17 External dimensions of flexible cables to be accommodated by cord anchorages Table 18 Torque test values for cord anchorages of flexible cables Table 19 Maximum dimensions of flexible cables to be accommodated in rewirable accessories Table 20 Relationship between rating of accessories, nominal cross-sectional areas of test conductors and test currents for the tests of temperature rise (Clause 19) and normal operation (Clause 21) Table 21 Height of fall for impact tests Table 22 Torque test values for glands Table 23 Resistance to heat of different types or parts of accessories Table 24 Creepage distances, clearances and distances through insulating sealing compound Table 25 Relationship between rated current and connectable nominal cross-sectional areas of copper conductors Table 26 Relationship between pull force and cross-sectional area Table 27 Composition of conductors Table 28 Tightening torque for the verification of the mechanical strength of screw-type terminals Table 29 Relationship between rated current and connectable cross-sectional areas of copper conductors for screwless terminals Table A. 1 Diagrammatic representation of routine tests to be applied to portable accessories with as-delivered conductors Table B. 1 List of specimens required for test