Do building electricians need textual research? What do you need to test?

Electrician certificate Electrician now has three certificates, of course, the most important one is the qualification certificate. Electricians in the national post classification are also divided into other related posts, mainly electricians (installation) and maintenance electricians. There are high voltage electricians and low voltage electricians. Low-voltage installation electricians can't work on high-voltage lines. Classification of electrician certificate 1. Vocational qualification certificate Vocational qualification certificate is the proof that workers have the necessary knowledge and skills to engage in a certain occupation. It is the qualification certificate for workers to apply for jobs, take up posts and start businesses, the main basis for employers to recruit workers, and the effective certificate for overseas employment and foreign labor cooperation personnel to notarize their skill level. National vocational qualification grades are divided into five grades: primary (level 5), intermediate (level 4), advanced (level 3), technician (level 2) and senior technician (level 1). The biggest difference between the national vocational qualification certificate and certificates issued by other institutions such as industries and associations is that the national vocational qualification certificate is organized and implemented by the government in the form of national laws, decrees and administrative regulations, based on national vocational skills standards or qualifications, by the government-recognized assessment and appraisal institutions-vocational skills appraisal institutions-provincial and municipal labor and social security departments, which objectively, fairly and scientifically evaluate and appraise the skills or professional qualifications of workers and issue corresponding certificates to those who are qualified. Vocational qualification certificate is the proof that workers have the necessary knowledge and skills to engage in a certain occupation. It is the qualification certificate for workers to apply for jobs, take up posts and start businesses, the main basis for employers to recruit workers, and the effective certificate for overseas employment and foreign labor cooperation personnel to notarize their skill level. It is a national certificate commonly used in the whole country, but the certificates issued by institutions and organizations such as industries and associations do not have the above characteristics. 2. The special operation certificate is issued by the local safety production supervision and administration bureau, and there will be a difference between high pressure and low pressure in a few areas, regardless of most areas. It mainly proves that you have the knowledge and ability of safe operation of this type of work, and the preliminary examination is held every two years. 3. The National Electrician's Online Certificate shall be issued by the State Electricity Regulatory Commission. On the user's power receiving device or transmission device, the electrical installation, test, maintenance and operation license certificates are divided into three categories: low voltage, high voltage and special. According to the provisions of decree 1998 12. SERC 15, low voltage can be engaged in electrical work with voltage levels below 0.4KV, high voltage can be engaged in electrical work with all voltage levels, and special operations such as line experiments can be engaged with special network access certificates, which will be reviewed once every three years.