What does an electrical worker do?

The general work of electrical appliances is electrician, which is a science and technology to study the objective law of electromagnetic field and its application, as well as two industrial production systems: electric power production and electrician manufacturing.

Common sense of electrician

1. Before decoration, there must be (strong current and weak current) construction drawings, and electrical engineering completion drawings shall be provided upon completion.

2, electrical installation construction personnel should hold relevant certificates.

3, wiring should be color separation, phase line (L) color should be unified, zero line (N) should be black, protection line (PE) must be yellow and green.

4, plastic wire protection tube and junction box appearance should not be damaged and deformed.

5. Generally, the pipes are 4 branches (DN 15) and 6 branches (DN20). The wall thickness of smooth pipes is 2 .0 0.3mm, and there are no more than 4 threads.

6. Ordinary appliances are equipped with 2.5mm2 copper wire. High-power electrical appliances such as air conditioners should be equipped with 4mm2 or 6mm2 copper conductors.

7, high voltage lines and weak current lines are prohibited to wear in the same casing.

8, the same indoor power supply, telephone, television and other sockets should be at the same level elevation, the height difference should be less than 5 mm. ..

9. When installing lamps and lanterns, all design and installation fixing points of lamps and lanterns must be fixed.

10. Installation of the junction box in the ceiling: the junction box shall be located at any position where leads and wiring are required. And shall not be fixed on the wooden keel, should be fixed at the top.

Extended data:

Electrical safety regulations

I. Equipment installation

1. When installing the high-pressure oil switch, automatic air switch and other switching devices with return springs, the switches should be placed in the off position.

2, when handling power distribution cabinet, should have the specialist command, in step. When installing multiple switchboards (boxes) in parallel, fingers shall not be placed at the joint of two switchboards (boxes), and connecting screw holes and screws shall not be touched.

3. Electrical equipment used in the open air should have good rain-proof performance or reliable rain-proof facilities. The distribution box must be firm, complete and tight. It is forbidden to place sundries in the distribution box in use.

4, carved slot, hole, must wear protective glasses, hammer handle shall not be loose. Chisels should not curl or crack. When hitting the wall and floor with eyes, no one is allowed to go near the back of the wall or under the floor.

Second, the internal installation

1. When installing the lighting circuit, it is not allowed to walk or pile materials directly on the batten ceiling or sound insulation board; When walking due to homework, scaffolding must be laid on the big stare blankly wall; 36V low-voltage power supply should be used for lighting in the ceiling.

2, homework on scaffolding, scaffolding must be spread, can not have gaps and probe plate. The materials used should be put into the tool bag and carried with you. Don't throw them around.

3, on the platform, floor with human bending machine simmer bending, should be back to the center of the building, face to avoid when operating. When filling large-diameter pipes and simmering pipes with sand, the sand must be dried with fire before filling. When using mechanical percussion, no one is allowed to stand below, and manual percussion should be staggered up and down. No one can stay in front of the nozzle when the pipe is heated.

4. When the pipe passes through the belt line, it is not allowed to make a phone call or blow on the nozzle to prevent the belt line from popping up. When two people thread, they should cooperate and coordinate. Thread high, don't push too hard.

5, cable hanging pipe laying, should prevent wire rope head injury. Tighten the steel cable with moderate force to prevent the hanging basket bolt from breaking.

6, the use of casing machine, electric grinding wheel, bench drill, hand drill, should ensure good insulation, and have a reliable zero grounding. The leakage protection device is sensitive and effective.

Third, the perimeter installation

1. Before operation, check tools (milling cutter, pickaxe, hammer, brazing, etc. ) solid and reliable. When digging a pit, slope should be placed according to soil quality and depth.

2, pole pit is located in the traffic arteries or places where people often pass by, dug pit should be covered in time, set up a red light at night. When the chassis is transported down to into the pit, it is necessary to prevent hands and feet.

3, the construction site pole, should have the specialist command. When transporting cars, they must be tied firmly to prevent rolling. When people lift it, they should echo back and forth and coordinate, and the pole should not be too high from the ground to prevent one side from spraining.

4, artificial pole, should have the specialist command. Check whether the tools are firm and reliable before poling (e.g. the fork wood is free of scars, the chain is suitable, and the sliding rope, horizontal rope and steel rope are free of scars).

The ground anchor drill should be firm and reliable, and the rope should be applied evenly in all directions. When operating, cooperate with each other, obey the command and balance the strength; No one is allowed to stand under the mechanical upright post and jib, and all live lines above (within the rotating radius of jib) must be cut off.

5. The pole moves in place, and no one is allowed in the pit. After the pole is erected, the fork wood must be erected before the hook can be removed. Before the pole pit is filled, the fork wood, sliding rope or horizontal rope shall not be removed.

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