2. Now building electricians should not only know high voltage and low voltage electricity, but also know if electricity, PLC and so on.

3. Unlike hospitals, the construction site may need to install new equipment every day, which requires a lot of calculation and experience.

4. Drawing is a good thing.

5, the key is to learn and control the complex drawings, knowledge must be wide.

6. Construction drawings before construction.

7. Before construction, there must be electrical (strong current and weak current) and water supply and drainage design drawings.

8.2. Bare wires are strictly prohibited.

9. It is strictly prohibited to lay wires directly in walls, floors, floors or ceilings without any protection.

10, 3. Wiring and conduit should distinguish different voltages, different circuits and different signals.

1 1, threading in the same catheter is prohibited.

12, 4. The installation of lamps and lanterns should be carried out on the brick-concrete structure after painting is completed.

13, wooden wedge is strictly prohibited, and hooks, bolts or expansion bolts are used.

14. The number of bolts (or screws) for fixing lamps shall not be less than 2.

15, lamps and lanterns shall not be installed on combustible components.

16, 5. Switch installation of lamps and electrical equipment.

17, the switches of lamps and electrical equipment must be installed on the "phase line" (that is, the control phase line), otherwise the switches will go out as soon as the lights are turned off.