This standard specifies the size requirements for panels, adjustment plates, and installation boxes for electrical accessories. This standard applies to panels, adjustment plates, and installation boxes for household and similar installations with rated voltages not exceeding AC 440 V and DC 630 V. and rated currents not exceeding 63 A. This standard also applies to installation boxes for installing or suspending lighting equipment and installation boxes for ground sockets. This standard does not apply to panels, adjustment plates, and installation boxes in combination electrical accessories equipped with overcurrent protection devices, nor does it apply to panels, adjustment plates, and installation boxes in busbar trunking type electrical accessories. This standard does not apply to panels, adjustment plates, and installation boxes that are assembled with equipment and specifically designed based on the equipment surface. The following normative references are essential for the application of this document. For all cited documents with issue 8, only the dated version applies to this document. For undated references, the latest version (including all modification orders) applies to this document. GB/T17194-1997 Electrical conduits - Outer diameter of conduits for electrical installation and threads of conduits and fittings - The following terms and definitions apply to this document. The part of the cover plate housing used to maintain electrical accessories in a fixed position or to serve as a sealing function, which is not integrated with the electrical accessories or is not included in the electrical accessories- A component, also known as a flow or cover plate. 3.2 Adjusting plate is a component used as a transitional connection between the panel and the installation box to maintain a flat installation position of the panel. 3.3 Install a part of the box shell, which is used to accommodate electrical accessories (such as sockets, switches, etc.) and can be used to fix the cover and cover plate, electrical accessories, and other mechanisms. [GB 17466.1-2008, Definition 3.2] 4 Dimensional Requirements 4.1 The dimensions of panels and installation boxes for electrical accessories shall comply with the requirements in Figures 1 to 15. Note 1: This standard specifies the main installation dimensions of panels and installation boxes for electrical accessories, such as determining the center distance of installation holes. Note 2: The overall dimensions of the panels given in this standard are only reference values, and it is recommended that manufacturers prioritize their selection. Note 3: For dimensions that do not provide tolerances in the drawings of this standard, tolerances can be selected according to GB/T 1804-2000
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