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Hydropower installation knowledge
Time：2016-12-04 Author： Hit：1126
1, before the construction of the construction plans
Before the construction must have electrical (strong, weak), water supply and drainage design and construction plans.
2, no wires exposedNo direct laying any protection in the walls, floor, floor or ceiling without wires.
3, wiring pipe to distinguish
Different voltage, different circuit, different signal lines are strictly prohibited in the same thread.
4, the installation of lamps should be carried out after the completion of the paint
The installation of lamps in masonry structure, prohibited the use of wood, hook bolt or expansion bolt, etc.. Bolts (or screws) of fixed lamps shall not be less than 2. Lamps and lanterns are not installed on the combustible components.
5, lights and electrical equipment switch installation
Switch lights and electrical equipment must be installed in the "line" (control line), or switch off, lights and electrical equipment are charged, easily lead to electric shock events.
6, there are two types of power system protection
Grounding protection and grounding protection, China's current general to take the ground protection. Attention, the same system, it is strictly prohibited to take two kinds of protection, otherwise it will cause safety accidents.
7, prohibit the use of mobile switches at the head of the bed
If the lamp is using a screw cap, the main line is to take control of the center screw cap.
8, the protection of the interface
Each line interface should be smooth, and even the board connection should be firm. Power inlet box parts should be added protection ring (lock nut) protection.
9, the line pipe elbow
In order to update and maintain the future lead, buried in the cable duct wall, ground or ceiling, the bend elbow curvature (i.e. radius of curvature) is 5~10 times the diameter of the pipe thread.
10, prohibited in the wire connecting wire
Prohibited in the threading pipe connecting wire, if the length of the wire is not required to take a long time, wire joints in threading pipe, should generally be in the switch and socket wiring, lamp box and junction box.
11, the choice of line pipe
Line pipe should choose a certain size (thickness), not only to be able to make the wire to wear, but also to leave enough space, so that the heat generated by a large current can be emitted off. The ratio of the cross-sectional area of the common conducting wire to the cross-sectional area of the line is 1/3~1/2. No wires are strictly prohibited to plug the pipe.
12, the water supply pipe can be used PP-R pipe, copper pipe.
13, check the water pipes
Dark deposited water pipes must be strictly check all connection parts are installed close, solid, to the right, and then do the hydrostatic test, test the water for a period of time before the hidden. Pressure test index is generally suitable for 0.8mpa-1.0mpa.
14, drainage pipe installation attention
The transverse drainage pipe pipe should have a certain slope, socket connection is close, ensure no leakage. The fixed pipeline bracket, elevator spacing reasonable and firm.
15, the installation location of sanitary ware
The installation position of the sanitary appliance should be accurate, the support and the bracket are smooth and firm. The lowest floor drain should be installed on the ground, and a ground 5mm. The toilet with the ground or pipe connecting and sealing clay or silica gel, is the use of cement, cement expansion will cause toilet bottom crack damage.
16, hot and cold water faucet orientation
The hot water faucet in the cold and hot water tap should be installed on the left side. Electric water heater should be grounding protection device, beginning with should be excluded from the air in the gallbladder, filled with water before power up.
