At present, only the employment card is useful for the exam, but the registration card is of little use. You find an adult school exam. They have this kind of operation. You pay for the questions, and you have a website to do them. Just wait for the exam notice. Practical classes generally see whether you are a high-voltage electrician or a low-voltage electrician. Basically, after the theory is passed, it is practical exercise, and the practical exercise first tests cardiopulmonary resuscitation or head dressing. If there are too many people in the exam, there will generally be low-voltage electrical signs, then sign boards will be hung in violation of regulations, then multi-function meters, then transformer meters, then motors, and then the use of auxiliary electrical equipment and the selection of insulating gloves and high-voltage insulating shoes will be checked. If there is high voltage, there is the operation flow of high voltage switchgear, the operation flow of the ring diagram and so on.

Low pressure is all basic knowledge, very simple.