Renovation and attention to wiring construction
There is a lot of copper problems According to an expert from the Copper Association, the country has already made it clear that copper conductors should be used in new houses. But also copper conductors, poor quality copper conductors, copper cores using recycled copper, containing many impurities, and some poor quality copper conductors even worse than the conductive properties of wire, easily lead to electrical accidents; high quality copper wire, the copper core of high purity Made of fine red copper, the outer layer is bright and slightly soft. Insulating materials used for inferior copper conductors are recycled plastics, which have a dull color, loose texture, uneven thickness, low insulation capacity, and are prone to aging or breakdown and cause short circuits. Some unscrupulous manufacturers often make a fuss about the length and cross section of the wire, cutting corners, length and cross section, often fail to reach the specification of the mark. Comprehensive understanding of the copper standard Material selection If you are decorating an old house, the original aluminum wire must be replaced with a copper wire. Because the aluminum wire is easily oxidized, the connector easily ignites. According to investigations, the incidence of electrical fire using the aluminum wire is several dozen times that of the copper wire. If only the switch and the socket are replaced, it will bury potential safety hazards for the occupants in the future. Conductor cross section From the perspective of electrical safety, the national residential design specification states that the branch circuit section should be no less than 2.5 mm2. Air-conditioning and other high-power appliances are best to walk a 4mm2 line alone. If you consider that in the future the number of kitchen and bathroom appliances will increase dramatically, the circuit of the kitchen and bathroom is best to use 4mm2 copper wire. Number of loops Sufficient loop count is essential for modern home life. When a short circuit or other problem occurs on a line, it will not affect the normal operation of other circuits. According to the area of ​​use, lighting circuit can choose two or three way, power socket three to four way, kitchen and bathroom go all the way, air-conditioning circuit two to three roads, one air-conditioning loop with up to two air conditioners. Wiring method In order to be aesthetically pleasing and easy to inspect and replace, slotting and dark pipe laying are generally used. In the wiring process follows the principle of "fire line into the switch, zero line into the lamp". Leakage Protection In addition to air conditioning power outlets, other power outlet circuits should be equipped with leakage protection devices. Socket installation attaches importance to the rules Number of outlets The number and variety of electrical appliances in each household is increasing, and many households use pull-out socket boards to meet their electricity needs while ignoring security factors. In the first quarter of 1999, the State Bureau of Technical Supervision conducted spot checks on the socket boards and found that nearly 50% of the products failed. Random pull-in of the interior temporary lines often causes personal electric shocks and electrical fire accidents, remembering that socket boards are only allowed for temporary use. Therefore, in the renovation, you should consider increasing the number of fixed sockets in the wall. It is recommended that you refer to Hong Kong's standards: 4 bedrooms per room, a group of 2.5 square meters in the living room, a kitchen of 1.2 square meters, and air-conditioning fans, washing machines and other special outlets. Socket type In order to prevent children from getting an electric shock, a safety socket with a safety cover should be used; refrigerators and air conditioners should use separate, protective grounded three-eye sockets; the bathroom should be damp, and ordinary outlets should not be installed but splash-proof sockets should be used. Installation position Generally, the switch is 1.2-1.4 meters away from the ground, and the horizontal distance from the door frame is 0.15-0.2 meters. The height of the same room switch should be the same; the surface mounted socket should not be less than 1.8 meters from the ground, and the concealed socket should be 0.3 meters away from the ground. Of course, the specific installation location has to be determined by the placement of furniture and electrical appliances. Installation method Single-phase two-eye socket wiring requirements are: "zero left and right fire" when horizontally arranged, and "zero under fired" when vertically arranged; the zero line of three-eye socket and protective grounding wire must not be wrongly connected. Air Conditioner Entrance Renovation Socket Switch Appliance Residential Home Improvement Living Room Bathroom Design Bathroom Door Bedroom Decoration Home Bedroom Lamp Drill Bits,Auger Drill Bits,Wood Drill Bits Tenyu Tools Co., Ltd. , http://www.dydrillbits.com