This book is the English version of the Low Voltage Electrician Certification Training Course (Video version) (ISBN: 978-7-122-35692-5). It includes 12 chapters: safety production instructions for electricians safety laws and regulations, basic knowledge of electrician, electrical tools and safety signs, low voltage electrical apparatus, asynchronous motor, electrical line, electrical lighting, power capacitor, use of safety tools, safe operation technology, elimination of potential safety hazards at the operation site, and emergency response at operation site. Furthermore, the examination question bank is also attached. It has all the characteristics of the new form of teaching materials.

Chapter 1　Safety Production Instructions for Electricians\t001
1.1　Laws and regulations on safety production\t002
1.1.1　Regulations on Management of Safety Technology Training and Assessment for Special Operation Personnel\t002
1.1.2　The Production Safety Law of the People′s Republic of China\t003
1.1.3　Other laws and regulations\t006
1.2　Safety protection and electric shock prevention measures\t008
1.2.1　Organizational measures to ensure the safety of electricians\t008
1.2.2　Technical measures to prevent electric shock\t011
1.3　Electrical accident and first aid for electric shock\t019
1.3.1　Harm of electric current to human body\t019
1.3.2　Causes and types of electric shock\t021
1.3.3　Electric shock mode\t022
1.3.4　Electrical accident\t024
1.3.5　First aid operation for electric shock\t025
1.4　Electrical fire protection, explosion-proof, lightning protection and anti-static\t029
1.4.1　Electrical fire and explosion prevention\t029
1.4.2　Electrical lightning protection and anti-static\t032
Chapter 2　Basic knowledge of electrical safety technology\t035
2.1　Basic knowledge of direct current (DC) circuit\t036
2.1.1　Circuit and its basic physical quantities\t036
2.1.2　Ohm′s Law\t039
2.1.3　Series and parallel connection of resistance\t040
2.1.4　Kirchhoff′s Law and its application\t042
2.1.5　Series and parallel connection of capacitors\t043
2.2　Basic electromagnetic knowledge\t044
2.2.1　Magnetic field of current\t044
2.2.2　Basic physical quantity of magnetic field\t046
2.2.3　Left-hand rule\t047
2.2.4　Electromagnetic induction phenomenon and Lenz′s Law\t048
2.2.5　Self-inductance and mutual inductance\t050
2.3　Fundamentals of alternating current (AC)\t051
2.3.1　Single phase sinusoidal AC\t051
2.3.2　Three phase AC\t054
2.4　Fundamentals of electronic technology\t061
2.4.1　Crystal diode and rectifier circuit\t061
2.4.2　Crystal triode and its amplification circuit.\t066
2.4.3　Voltage stabilizing circuit\t070
Chapter 3　Electrical tools and safety signs\t073
3.1　Use of electrical tools and safety tools\t074
3.1.1　Use of common electrical tools\t074
3.1.2　Use of other electrical tools\t077
3.1.3　Use of manual electric tools\t080
3.1.4　Use of electrical safety appliances\t082
3.2　Use of common electrical instruments\t083
3.2.1　Use of multimeter\t083
3.2.2　Use of clamp ammeter\t094
3.2.3　Use of insulation resistance meter\t097
3.2.4　Use of electric energy meter\t100
3.2.5　Use of ammeter\t102
3.2.6　Use of voltmeter\t104
3.3　Electrical safety signs\t105
3.3.1　Electrical safety color\t105
3.3.2　Electrical safety sign board\t106
Chapter 4　Low-voltage electrical apparatus\t109
4.1　Basic knowledge of low-voltage apparatus\t110
4.1.1　Classification of low-voltage apparatus\t110
4.1.2　Common terms of low-voltage apparatus\t113
4.1.3　Selection and installation of low-voltage electrical apparatus\t114
4.2　 Low-voltage circuit breaker and leakage protector\t116
4.2.1　Low-voltage circuit breaker\t116
4.2.2　Leakage protector\t118
4.3　Contactor and Relay\t119
4.3.1　Contactor\t119
4.3.2　Relay\t122
4.4　Fuse and master switch\t128
4.4.1　Fuse\t128
4.4.2　Master switch\t130
Chapter 5　Asynchronous motor\t133
5.1　Basic knowledge of asynchronous motor\t134
5.1.1　Brief introduction to motor\t134
5.1.2　Structure and principle of asynchronous motor\t138
5.1.3　Characteristics of asynchronous motor\t142
5.2　Starting and running of asynchronous motor\t145
5.2.1　Starting of asynchronous motor\t145
5.2.2　Running of asynchronous motor\t150
5.3　Fault inspection and maintenance of asynchronous motor\t152
5.3.1　Fault inspection and maintenance of three phase cage asynchronous motor\t153
5.3.2　Fault inspection and maintenance of three phase wound asynchronous motor\t157
Chapter 6　Electrical line\t159
6.1　Types and characteristics of electrical line\t160
6.1.1　Overhead line\t160
6.1.2　Cable line\t163
6.1.3　Indoor line\t165
6.2　Safety of electrical lines\t165
6.2.1　Conducti