â–² Circuit acceptance has been ignored by readers. After all, it is too complicated and complicated, unless it is familiar to the masters who have worked for many years. When opening the distribution box in the home, there are too many places to be wired: there must be wiring in the junction box, and wiring when wiring. Any installation of the lamps requires wiring, which is a very common thing in construction.
â–²Because wiring is a covert project, it is difficult to see it directly, so many details are often overlooked. In particular, regarding the wiring of electric wires, it is necessary to pay attention to it. If something goes wrong, it is easy to cause a serious accident. In principle, the distribution box does not allow private shifting. The power supply main circuit breaker is set in the distribution box. The main circuit breaker should have the functions of overload short circuit protection and leakage protection. The leakage current should be no more than 30mA. This is the total power supply and should be checked for proper operation before operation.
â–²Air-conditioning power outlets, kitchen power outlets, bathroom power outlets, other power outlets and lighting power supplies should be designed separately. The circuit design of the room should take several routes on the design drawings. The socket line and the lighting line cannot be arranged in a row because of the different diameters. In particular, the power of the air conditioner is relatively large, and there are many kitchen and household appliances, so it is recommended and the ordinary power socket. The lines are separated.
â–² All distribution circuit protection circuit breakers should have overload and short circuit protection functions. When disconnecting, the phase line and neutral line should be disconnected at the same time. In order to avoid burning electrical appliances and power supplies in the event of a power failure, each distribution circuit protection circuit breaker is required to have overload and short circuit protection functions. Since the circuit protection circuit breaker is installed in each circuit, the circuit in a single area is broken, and other circuits can still work normally.
â–²The laying of electrical wires should be carried out according to the decoration design rules. The laying of electrical conductors should be shown on the design drawings. The details that are not detailed should be explained in detail by the designer like the construction team leader. Wire laying should not be self-contained by workers with non-specialized experience, and it is easy to cause accidents.
â–² phase line (L) should be red, neutral line (N) should be blue, ground protection line should be yellow-green two-color line (PE), the wiring color of the same house should be uniform. The power socket line in the above picture is divided into red, blue, yellow and green according to the 315 standard. The lines inside the line box are basically yellow, which is difficult to distinguish, and it is inevitable that the operation is wrong.
â–²The color of the wire is clearly stated in the equivalent specifications of the electrical industry in China. Red is the fire line color standard, blue, green or black is the zero line color standard, and the yellow and green color lines are the ground line color standard. In a house, the color code needs to be clearly distinguished, and uniform color separation is used during installation. If the installed line does not have a uniform separation, it is recommended to mark the other line on the line.
â–² Three-phase five-wire power distribution design should be distributed. The distribution of the distribution design of the distribution design means that the electric load is distributed as evenly as possible to each circuit, and the aging of a certain circuit is not excessively burdened. The result of no load distribution is that the circuit of the kitchen space that receives the high-power appliances repeatedly trips.
â–²The indoor wiring should be laid through the pipe (except for the sheathed wire on the top surface of the cast-in-place concrete floor). The indoor circuit is used to protect the fragile wire sheath and avoid leakage accidents. If you do not pay attention to the work when the line is bent, it will cause a lot of inconvenience in the future. If the line is directly bent, it will easily cause the line to be damaged, resulting in a leakage accident.
▲Good single-strand copper conductor wire should be well packaged and have anti-counterfeit labels. Carefully observe after opening the package, the wire diameter is even, and the insulation skin should not be damaged or scratched. The total cross-sectional area of ​​the inner conductor should not exceed 40% of the cross-sectional area of ​​the inner diameter of the tube. The total cross-sectional area of ​​the inner conductor of the pipe is not allowed to exceed 40% of the cross-sectional area of ​​the inner diameter of the pipe to ensure that the wire can be removed for replacement when the wire needs to be repaired.
â–²The wall thickness is not less than 1.0mm. If the wall thickness of the PVC wire tube is less than 1 mm, it is easy to step on the tube by accidentally stepping on the tube, which does not protect it. At present, the more people use it is the wire and tube of Zhongcai. Wearing the two wires of the strong electric line and the weak electric line in the same electric wire tube is easy to cause signal interference, and there is a safety hazard when people are in contact with the weak electric line.
â–²The copper core section of the socket wire shall be not less than 2.5mm2, and the copper core section of the lamp cap and switch wire shall be not less than 1.5mm2. The wire diameters of wires for different purposes should be strictly distinguished, and the socket wires and switch wires should be completely separated. The shoddy line with a line diameter that is not closed must not be put into use.
â–²The bathroom socket should be splash-proof to prevent splashing and avoid short circuit. If the washbasin is not equipped with a splash-proof socket and the electrical piping inside the ceiling is to be improved, it should be improved in time. The piping shall not be fixed on the flat top of the boom or keel, and the electrical piping in the ceiling shall be laid with open tubes.
â–²The position of the lamp holder is combined with the ceiling keel, which is not convenient for maintenance. The length of the hose connected to the lamp position shall not exceed 1 m. Too long a lamp position cable not only reduces the safety factor of the lamp, but also makes it difficult to find the position of the lamp holder due to the excessive distance during maintenance.
â–² Strong and weak wires should not be exposed in the ceiling. The wires in the ceiling shall be covered with PVC pipe and fixed firmly. If the wires are twisted and twisted directly on the ceiling, it is extremely easy to leak electricity. The light switch should not be installed behind the door, and the height of the switch should be about 1.3m. The height of the switch from the ground usually refers to the height of the ground after renovation.
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