JGJ46-2005 PDF English
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Technical code for safety of temporary electrification on construction site
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| JGJ 46-1988 | English | 959 |
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Technical specification for temporary electrical safety of construction sites
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PROFESSIONAL STANDARD OF ~lE~
THE PEOPLE'S REPUBLIC OF CHINA
Technical Code for Safety of Temporary
Electrification on Construction Site
Issued on: APRIL IS, 2005
Implemented on: JULY 1, 2005
Issued by Ministry of Construction of the People's Republic of China
PROFESSIONAL STANDARD OF
THE PEOPLE'S REPUBLIC OF CHINA
Technical Code for Safety of Temporary Electrification on
Construction Site
J 405-2005
Approving Department. Ministry of Construction of the People's Republic of China
Implementation Date. July 1, 2005
Beijing 2005
NOTICE
This code is written in Chinese and English. The Chinese text shall be taken as the ruling one in
the event of any inconsistency between the Chinese text and the English text.
Announcement of the Ministry of Construction of the People's
Republic of China
No. 322
Announcement on Publishing the Professional Standard of "Technical Code for
Safety of Temporary Electrification on Construction Site"
Approving "Technical Code for Safety of Temporary Electrification on Construction Site" to be
used for the professional standard, the serial number is JGJ 46-2005, which is carried out from July 1,
2005. Therein, Articles 1.0.3, 3.1.5, 3.3.4, 5.1.1 , 5.1.2, 5.1.10, 5.3.2, 5.4.7, 6 .. 16, 6.1.8, 6.2.3, 6.2 .7,
7.2.1, 7.2.3, 8.1.3, 8.1.11, 8.2.10, 8.2.11, 8.2.15, 8.3.4, 9.73 , 10.2.2, 10.2.5, 10.3.11, which must be
carried out strictly. At the same time, it is abolished for "Technical Code for Safety of Temporary
Electrification on Construction Site" JGJ 46-88, which the primitive professional standard .
The code is published by the Plan publishing company, which is organized for the Institute of
standard and quota of Ministry construction.
Ministry of Construction of the People's Republic of China
April 15, 2005
Foreword
Based on the demand of Building standard [2001] No. 16 for the Ministry construction, The code
is established on investigate and research, sum up practice experience seriously, consulted relative
international standard, and collected the idea widely.
It is main technical content that 1. General Provisions; 2. Terms and Code Names; 3. Temporary
Electrification Management; 4. Prevention of External Circuit and Electric Installation; 5. Ground and
Lightning Protection; 6. Distribution Room and Self-repair Source; 7. Distributing Line; 8. Distributing
Box and Switch Box; 9. Electric Construction Machinery and Handhold Electric Tools; 10. Lighting;
Three Appendixes.
It is revised that main technical contents for this code, 1. Defined for three technical principles in
special power supply system on the construction site; 2. Added terms and code name for the main text
turn into alone chapter, cut out noun explanation in the appendix; 3. Make up the checking define of
temporary electrification on construction site; 4. Changed the "construction site and surroundings
environment" for "prevention of external circuit and electric installation", make up for the define for
external circuit to build protective device and the safeguard for inflammable and explosive material,
corrosive medium, and mechanical damage; 5. In the ground line protective system, set up protective
ground line and defined the color of the insulated line for the phase line, working ground line,
protective ground line, and make up for the define determining lightning protection range on bowl
method; 6. Added to the define of distribution room lighting; 7. Added to the define of the selective
rule, laying mode and method for the cable circuit, and the define of applicative principle for the five
cores cable; 8. Added to the define of the box-form construction of the distributing box and switching
box, as well as electrical equipment allocation and wiring; 9. Added to the define set up protective
device for the second get an electric shock in the welding machine, set up controller in the frequent
operating devices, and chick to isolation for handhold electric tools; 10. Make up for the define to
employ safety isolation transformer, and the define of safety distance and protective measure between
lamps and inflammable and explosive cargo.
The code was managed for the Ministry Construction, and explained for forced terms, and
explained for technical contents in Chief Development Organization.
Chief Development Organization. Shen Yang construction college (HunNan new district of
Shen Yang city, postal code. 11 0000)
Participating Development Organizations.
Construction safety branch of construction association of Chin a
Construction safety association of ShangHai
Construction safety monitors station of ShanDong province
Construction safety and device management association of JiangSu province
Construction professional safety association of AnHui province
Construction engineering safety monitors station ofYunNan province
Cities and counties safety production management station ofWuHan
Construction engineering quality safety monitors station of ShanXi province
Construction safety monitors station ofYanTai city
Construction Office of LiaoNing province
Construction engineering quality safety monitors station ofFuShun city
Chief Drafting Staffs. Xu Rongjie, Qin Chunfang, Sun Jinqiang, Li Yin, Wu Xiuli, Gu Jiansheng,
Liu Shicai, Zhang Ming, Pu Yufeng, Cao Xianping, Bian Erlun,
Wang Xiaobo, Liu Shaofei, Li Changkai, Bai Bo
Table of Contents
General Provisions ... 1
2 Terms and Code Names ... 2
2.1 Terms ... 2
2.2 Code Number... 4
3 Temporary Electrification Management ... 6
3.1 Temporary Electrification Organize and Design ... 6
3.2 Electrician and Electric Person ... 7
3.3 Safety Technical File ... 7
4 Prevention of External Circuit and Electric Installation ... 9
4.1 External Circuit Prevention ... 9
4.2 Electric Device Protection ... 1 0
5 Ground and Lightning Protection ... 11
5.1 General Require1nents ... 11
5.2 Protective Connecting Zero ... 13
5.3 Connecting to the Ground and the Earth Resistance of it ... 13
5.4 Lighting Protection ... 14
6 Distribution Room and Self-repair Source ... 16
6.1 Distribution Room ... l6
6.2 230/400V Self-supply Generator Set ... 17
7 Distribution Line ... 19
7.1 Aerial Lines ... l9
7.2 Cable Line ... 22
7.3 Indoor Distribution Line ... 23
8 Distribution Box and Switch Box ... 24
8.1 Configuration of Distribution Box and Switch Box ... 24
8.2 Selection of Electric Utilities ... 26
8.3 Utilization and Maintenance ... 27
9 Electric Construction Machinery and Handhold Electric Tools ... 30
9. I General Requirements ... 30
9.2 Hoisting Machinery ... 31
9.3 Equipment for Pile Works ... 31
9.4 Rammer Compactor ... 32
9.5 Welding Devices ... 32
9.6 Handhold Electric Tools ... 32
9.7 Other Electric Tools for Construction Works ... 33
1 0 Lighting ...3 5
10.1 General Requirements ...35
10.2 Lighting Electricity Supply ... 35
10.3 Lighting Equipment ... 36
Appendix A Average Annual Days of Thunder Storm All Over the Country ...38
Appendix B Rolling Ball Method ... 42
Appendix C Configuration ofElectromotor Load Line and Electrical Apparatus ...45
Explanation ofWording in This Code ... 51
1 General Provisions
1.0.1 The code, which was established, is carrying out the national laws and statutes for secure
production, ensuring the safety of electrification on construction site, preventing get an electric shock
and take place fire accident for electrical equipments, accelerating the development of the construction.
1.0.2 The code suit with design, install, employ, maintain and back out low pressure electrical system,
which was 220/3 80V for tri-phase four line and direct to ground of power supply neutral point in the
temporary electrification on construction site of industrial and civil construction and basic installation,
which was news, reconstructive and expansive.
1.0.3 For special power supply of low pressure electrical system of the temporary electrification
on construction site, which 220/380V for tri-phase four line and direct to ground of power
supply neutral point, it must be in keeping with following defines.
1 Employ three level distributing system;
2 Employ TN-S ground protective system;
3 Employ two level electric leakage protective systems.
1.0.4 For temporary electrification on construction site, besides carry out the define of the code, it
shall with suit to relative defines of national forced standard, which was present.
2 Terms and Code Names
2.1 Terms
2.1.1 Low voltage
The voltage is low than lkV of rate...
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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