It is not easy to do this by understanding the electrical lighting plan, but it is not easy to do this because the electrical lighting plan on the design drawing is somewhat different from the representation on the actual wiring diagram. When arranging lamps and paying off the line, "phase line enters the switch, the zero line enters the lamp head", which is the most basic knowledge. But knowing that these are not enough, you need to know the number of lines that are placed between the fixture and the fixture. If the number of wires has been marked on the drawing (that is, the number of lamps marked with short slashes between the lamps in the figure), it can be released according to the installation; if the number of roots is not marked, the electrician needs to think independently to complete the release. Line work. If you are wearing a dark pipe, you should be careful to avoid wearing or leaking the wire, which will cause difficulties in construction.
In the seven examples in the drawing, it can be seen from the electrical plan and the actual wiring diagram that the number of discharge lines is different depending on the number of switches to control the number of lamps. The simplest one of them is a switch control lamp. When the switch is unipolar, the number of wires between the power supply line and the switch to the lamp is two. In design, the number of wires is generally not marked when there are two wires. Only when three or more wires are used, the number of roots is indicated by short oblique lines (this figure is convenient for explanation, and the number of wires is also injected in two cases). As shown in Fig. 6, the two switches simultaneously control two lamp caps in two places and add two eye sockets. The number of payouts can be inferred from the actual wiring diagram. There are four wires between the two lamps, two control switches to each of the three wires, and the incoming power cable is still two.
In the line connecting the socket, if the phase line of the socket is taken out from the switch box, remember that the pile head cannot be connected after the switch; otherwise, the socket is also controlled by the switch. Another point to note is that there is a big difference between the design drawing and the actual line drawing. Even the number of wires injected on the lighting chart sent by the design institute may not be accurate. When the wire is laid, it must be checked again.
[Additional] Common lighting switch legend
"Joint" refers to several switch buttons on the same switch panel.
“Control†refers to the control mode of the switch button, which is generally divided into “single control†and “dual controlâ€.
For example: “single unit single control†refers to a button to control a group of light sources; “double unit single control†refers to a single button on a panel, and these two buttons are one-way control lamps "Single dual control" means that there are two buttons with a certain distance to simultaneously control a group of light sources.
KNLE2-63 Residual Current Circuit Breaker With Over Load Protection
KNLE2-63 TWO FUNCTION : MCB AND RCCB FUNCTIONS
leakage breaker is suitable for the leakage protection of the line of AC 50/60Hz, rated voltage single phase 240V, rated current up to 63A. When there is human electricity shock or if the leakage current of the line exceeds the prescribed value, it will automatically cut off the power within 0.1s to protect human safety and prevent the accident due to the current leakage.
leakage breaker can protect against overload and short-circuit. It can be used to protect the line from being overloaded and short-circuited as wellas infrequent changeover of the line in normal situation. It complies with standard of IEC/EN61009-1 and GB16917.1.
KNLE2-63 Residual Current Circuit Breaker,Residual Current Circuit Breaker with Over Load Protection 1p,Residual Current Circuit Breaker with Over Load Protection 2p
Wenzhou Korlen Electric Appliances Co., Ltd. , https://www.zjaccontactor.com