Before the decoration must have electrical (strong, weak), water supply and drainage design drawings; is strictly prohibited without any direct protection of the conductor laid in the wall, floor, under the floor or under the sky; different voltage, different circuits, different signals It is forbidden to put the line in the same threading pipe.

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The installation of the luminaires should be done after the paint is finished. Installing lamps on brick-concrete structures, using wooden wedges, applying hooks, bolts, or expansion bolts, etc. is strictly prohibited. There should be no less than two bolts (or screws) for the fixture. Luminaires must not be installed on combustible components.

The switch of the lamp and electrical equipment must be installed on the “phase line” (ie control the phase line), otherwise, the lamp and the electrical equipment are still energized after the switch is turned off, which may cause electric shock.

The power system has two protection methods: ground protection and street zero protection. At present, China generally adopts the ground protection method. Note that in the same system, it is forbidden to adopt two protection methods at the same time, otherwise it will cause a safety accident.

It is forbidden to use a mobile switch on the bedside. If the fixture is a screw base, the center tongue of the screw base should be connected to the control phase.

The interface of each line should be smooth and the line plate connection should be firm. The power inlet box interface should be protected by a protective ring (lock nut).

In order to renew and maintain the wires in the future, buried in the wall, underground or ceiling through the pipeline, the bend (ie bending radius) of the elbow at the turn should be 5 to 10 times the diameter of the pipe. The installation sequence is: firstly bury the pipe and then thread the cable. Generally, the line is threaded before installing the switch, plug and lamp. It is forbidden to insert the wire into the tube and then bury the tube. It is forbidden to connect the wire in the conduit. That is, if the length of the wire is not enough, the connector of the wire cannot be in the conduit. Generally, it should be connected in the junction box such as the switch, socket and lamp box.

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Safety Glass

1, the selection of goggles should be selected by the product inspection agency inspection of qualified products;
2. The width and size of the goggles should suit the user's face shape;
3, lens wear rough, lens frame damage, will affect the vision of the operator, should be replaced in time;
4. Goggles should be specially used to prevent eye diseases;
5, the filter and protection of welding goggles should be selected and replaced according to the requirements of the specified operation;

6. Prevent heavy fall and heavy pressure, and prevent hard objects from rubbing lenses and masks.

Two types of use of safety protective glasses:
A. Anti-cementing debris
Mainly used to prevent metal or sand debris and other mechanical damage to the eyes. Lenses and frames should be of solid construction and resistant to impact. The frame of TDAF001 sky shield is equipped with a shielding edge, and there shall be ventilation holes on it. Protective lens can choose toughened glass, adhesive glass or copper wire mesh protective lens.
B. Antichemical solution
Mainly used to protect the eyes from chemical damage caused by irritating or corrosive solutions. Ordinary flat lens can be used, and the frame should be covered to prevent the solution from splashing into. Usually used in laboratories, hospitals and other places, general medical glasses can be universal

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