>>> Decoration experience: circuit reform Strong electricity to copper Indoor electricity lines are generally called strong electricity, and there are mainly two parts of the lighting and socket circuit; in the second decoration, the transformation of the circuit is necessary for each house. If the original residential circuit uses aluminum wire, it must be replaced with copper wire. Because the aluminum wire has a low melting point and large electrical resistance, it has potential safety hazards and the country has explicitly eliminated it. It is suggested that before the renovation, several outlet boxes should be opened to check the nozzles of the originally installed wire tubes. If the wire tubes are rusted, the original wire tubes cannot be used and they should be discarded. If the wire tube is kept well, the wire in the tube can be replaced directly. If the tube is threaded in line with the standard, it can still be used. In order to save renovation costs, the original lines can be used without removing them, but the newly added power sockets and lighting circuits are preferably routed separately from the distribution box, and do not directly connect directly from the original circuit or directly from the outlet. Leads, because all the original circuit is installed, the current is calculated and distributed according to the load of each circuit branch. Any connection or addition of sockets and lighting fixtures to the original circuit will cause the overload of a single circuit, which is likely to cause Tripping or burning of the power mains can cause serious fires. Many old houses should consider replacing the main power box in the interior during the second renovation, because the original power box is generally not loaded enough and no leakage protection device is installed. In addition, in old residential buildings, the original socket circuit may not have a grounding wire (usually only two holes of the socket are missing grounding), which does not meet the electrical safety standards and must be replaced. One method is to replace the main power box of the house and set the grounding in the power box. Another method is to consult the power management personnel of the property to negotiate the installation location and connection method of the ground wire. Do not make a claim to set the ground wire. Change the weak electricity to protect In the second decoration of weak line items such as telephone lines, network cables, and video cables, first of all, it is necessary to protect the entrance lines and socket panels, and it is best to close them in advance. Change the pipeline to start the transformation from the home interface box, do not cut off the line, otherwise it will be very difficult to restore. After the installation of the indoor weak line, it is necessary to inquire Netcom and other professional companies or property companies to inspect, and the professional will perform the connection between the new indoor weak wire and the household interface box to ensure that no problems and failures will occur in the future. , General home improvement company's electrician has a low-voltage electrical operation permit, for strong construction standards can be assured, but the construction of weak electricity is not professional. Before the renovation, you must consider all kinds of installation locations for weak electrical outlets in advance. According to people's living habits, it is best to leave weak electrical outlets in all major functions (such as the living room, bedroom, etc.). The toilet must consider the telephone outlet. To facilitate future life. As for building intercom systems, it is advisable to request the property department to be removed in advance during the renovation and reinstall it after completion. If it cannot be removed, it must be bandaged or protected beforehand to avoid damage during the construction process. It should be noted that all weak wires must be laid through the pipe, and weak current lines and sockets are best maintained with strong power lines and sockets. Second-hand housing hydropower renovation socket interior decoration residential lighting home decoration living room bathroom door
Center Drill Bit is also known as Slocombe Drills, Centre Drills were originally designed to create the countersink required to locate a tailstock centre when turning between centres. They have a point angle of 60° to match the angle of a Tailstock Centre.
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A Centre Drill can also be used to provide a start location for a drill when drilling down the centre of a bar held in a Lathe chuck. Centre Drills are short and rigid enough to mark the bar centre without wandering off if they are carefully offered up to a rotating work-piece.
