Standard No.:	JB/T 8593-2013
English Name:	Dimensional requirements for boxes, cover-plate and adjusting plate for fixed electrical accessory
Chinese Name:	电器附件用面板、调整板和安装盒尺寸要求
Professional Classification:	JB    Professional Standard - Machinery
Issued by:	MIIT
Issued on:	2013-12-31
Implemented on:	2014-7-1
Status:	valid
Superseding:	JB/T 8593-1997 Plates、frames and mounting boxes for the flush mounted electrical accessories
Language:	English
File Format:	PDF
Word Count:	7000 words
Price(USD):	424.00
Delivery:	via email in 1 business day

1 Scope



This standard specifies the dimensional requirements for cover-plates, adjusting plates and boxes for electrical accessories.



This standard is applicable to cover-plates, adjusting plates and boxes for mounting for household and similar purposes, with a rated voltage of 440 Va.c. and 630 Vd.c. or below and a rated current of 63 A or below.



It also applies to mounting or suspending boxes for luminaires and boxes for floor sockets.



This standard neither applies to the cover-plates, adjusting plates and boxes in the combined electrical accessories equipped with overcurrent protection devices, nor to those in the busbar trunking type electrical accessories.



This standard does not apply to cover-plates, adjusting plates and boxes assembled with and specially designed for the equipment.



2 Normative references



The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced documents (including any amendment) applies.



GB/T 17194-1997 Conduits for electrical purposes — Outside diameters of conduits for electrical installations and threads of conduits and fittings



3 Terms and definitions



For the purpose of this document, the following terms and definitions apply.



3.1

cover-plate

part of an enclosure, not integral with or part of an accessory, which is used for either retaining the accessory in position or enclosing it

Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Dimensional requirements
5 Methods of measurements
Bibliography
Figure 1 One-position 86-type cover-plate
Figure 2 One-position 120-type cover-plate
Figure 3 Two-position 120-type cover-plate
Figure 4 Two-position 146-type cover-plate
Figure 5 One-position 86-type box
Figure 6 Two-position 146-type box
Figure 7 One-position 120-type box
Figure 8 Two-position 120-type box
Figure 9 Light connecting box
Figure 10 Cover-plate for one-position pop-up floor socket
Figure 11 Cover-plate for two-position pop-up floor socket
Figure 12 Box for one-position pop-up floor socket
Figure 13 Box for two-position pop-up floor socket
Figure 14 Cover-plate for clamshell floor socket
Figure 15 Box for clamshell floor socket
Table 1 Inner depth of box