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GB 1002 plug and socket safety upgrade! Mandatory increase of insulation sheath for plugs by 2027

Time：

2026-08-25

According to the mandatory national standard GB 1002-2024 for plugs and sockets, the live pins of the plug must be wrapped with insulation sheath. On August 1, 2027, the relevant products must complete the work of adding insulation sheaths to the live plugs. If the project is not completed within the deadline, the relevant product certification certificate will be suspended.

GB 1002-2024 "Single-phase plugs and socket-outlets for household and similar purposes—Types, basic parameters and dimensions", a mandatory national standard, has been officially implemented since August 1, 2025.

According to the new mandatory requirements, the live pins of plugs must be covered with insulating sleeves. By August 1, 2027, relevant products must complete the addition of insulating sleeves to live pins. Products failing to meet this requirement will have their certification suspended. By November 1, 2027, certification for products still lacking insulating sleeves will be revoked.

GB 1002-2024

Mandatory insulation sheath

Plugs with pins are required to have insulating sleeves

The standard mandates that plugs must be equipped with insulated sleeves, which can be produced using processes such as insert molding or adhesive backing, to prevent users from directly contacting the metal prongs during plug insertion or removal, thereby fully eliminating the risk of electric shock during these operations.

For non-rewirable plugs or rewirable plugs and adapters compliant with GBT 2099.3, the color of the insulating sheath shall be black, white, or gray.

For plugs of straight-insertion devices, the color of the insulating sheath may be chosen by the manufacturer, but it shall not be yellow, green, or a yellow-green combination.

Added measurement requirements for the distance between insulated sleeve pins and the edge of the plug

The shape of the plug is not specified, but the distance from the root of the live pin of the plug to the edge of the plug shall be not less than 6.5mm.

Note 1: If there is an insulating sheath, the root shall be the metal pin after stripping the insulating sheath.

Note 2: If the plug mating face is not a flat surface, the intersection line between the plug body surface and a plane offset 1mm toward the plug body from a plane perpendicular to the pin axis and passing through the highest point of the mating face shall be regarded as the plug edge, as illustrated by dimension B in Figure 8.

The protrusions on the mating surface of the plug shall not exceed 0.5 mm. The length of the plug pins shall be measured from the vertical plane of the pin at the highest point of the plug mating surface to the tip of the pin.

Note 3: Examples of "protrusions" include electrical parameters, trademarks, or other markings formed by molding on the plug mating surface, or any other external structures that may affect the mating of the plug.

Note 4: For plugs with functional components on the mating surface, the gap between the plug mating surface and the socket surface shall not exceed 1 mm after insertion.

Note 5: The length of the plug pins is considered to be the effective length of the metal pin part inserted into the socket.

Bending test trials have been added for plug pins with insulating sheaths

The live pins of a plug with an insulating sleeve shall be subjected to the bending test in 5.3; after 20 complete cycles of bending test, the pins shall not break.

Transition period with insulated sheath

Mandatory clause for electrified plug insulation sheath, transition period until August 1, 2027. For products that comply with the requirements of GB 1002-2024 standard, according to the relevant provisions of the standard implementation, the work of adding insulation sheath to live plugs should be completed no later than August 1, 2027. If the work is not completed within the deadline, the relevant product certification certificate will be suspended. If the work of adding insulation sheath to live plugs is not completed by November 1, 2027, the relevant product certification certificate will be revoked.

It is recommended that relevant enterprises complete the work of adding insulation sheaths to live plugs as soon as possible, carry out mold modification, material replacement, and product testing in a timely manner, and ensure that the products fully meet the requirements of the new national standard. As a professional third-party testing and certification service organization, Jiayu Testing has qualifications such as CMA, CNAS, CBTL, CCC, and has been recognized by multiple authoritative certification agencies at home and abroad. It is equipped with advanced instruments and equipment, has a skilled professional technical team, rich industry service experience, and strong testing technology capabilities. It is proficient in various regulations and standards, and provides professional testing and analysis services for various electrical accessories and other component products to ensure that the products meet relevant regulatory requirements. Welcome to contact us at 400-9269-886！