1. special operation certificate: issued by the safety supervision bureau.

Type of work: electrician (commonly known as operation certificate and employment certificate).

Classification: high-voltage operation and low-voltage operation. This is also the reason for high and low voltage electricians. Let's go But this doesn't mean what kind of electrician you are doing, but allows you to work under high or low pressure. This certificate does not represent your technical level.

2. Electrician's online job certificate: issued by the Electric Power Bureau. Allow to work in State Grid (commonly known as network access certificate).

Classification: electrician's network access certificate is divided into three categories: low voltage, high voltage and special. No general electrician is needed. This certificate does not represent your technical level.

3. Professional qualification certificate: issued by the Labor Bureau. Occupation: electrician (commonly known as grade certificate),

Classification: It is divided into five grades: primary (grade 5), intermediate (grade 4), advanced (grade 3), technician (grade 2) and advanced technician (1 grade). This certificate represents your technical level. Doesn't mean you can be an electrician. As long as you have a junior high school education or above, you can directly sign up for the research. Of course, if you don't have professional knowledge, you should also successfully obtain the certificate. It is recommended to participate in the training of the examination department or obtain information for self-study.

Study in electrician training: 30 days for senior electrician class, 0/8 days for intermediate electrician class and 0/3 days for junior electrician class.