Electricians must hold relevant certificates, and the certificates must be valid and reviewed within the specified time. Certificates that have expired must be replaced immediately, and unlicensed operation is strictly prohibited.
Electricians must use labor protection articles and insulating tools (such as insulating gloves and shoes). ) and regularly check, unqualified is replaced.
Non-electricians are strictly prohibited from engaging in temporary electricity use during construction. The electricity used for temporary construction on the construction site must conform to the three-level distribution and TN-S zero-level leakage protection system.
In TN-S neutral protection system, no part of the equipment should be neutral, the other part should be grounded, and the working zero line and the protection zero line should not be connected. Any electrical equipment must be equipped with the last level of electrical protection (that is, switch box), and the power cord of the equipment must not be led out of the arranged electrical box.
Each electrical equipment must have its own dedicated switch box. It is forbidden to simply restrict two or more electrical equipment (including sockets) with the same switch box or leakage protector. Each electrical equipment must be connected well and take care of the zero line.
Safe voltage must be used for hand-held lighting (below 3V and 36V), 24V safe voltage should be used in wet workplaces, lighting cables in metal containers should not be mopped, and 12V safe voltage should be used when crossing the road. The wire connector is wrapped with insulating tape.
When the distribution box and switch box are inspected regularly, the corresponding power isolating switch at the next higher level must be turned off, and a power-off sign "No closing, someone is working" should be hung, and some work is prohibited.
General simple iodine tungsten lamp (iron external) is strictly prohibited on the construction site. Indoor sheath line and porous plug-ins are strictly prohibited in the construction site. Outdoor 220V lamps and lanterns should not be less than 3m from the ground, and indoor lamps and lanterns should not be less than 2.5m from the ground.