Building of electrical installation for light (2/2)
Part 2: Schemes for control of lighting (lamps) by electrical switchers
Scheme 1: Control of luminaries (lamps) from simple switch
Phase conductor (L) is disconnected by power switch (Sw1), connections are made in the junction box (distribution box). When you closed the switch Sw1, the power circuit is closed and the light (lamp) lights up.
Building of electrical installation for light (1/2)
Part 1: Power cables and installation materials
In this article I will try to give the most common multi-line and single line diagrams for managing electric lighting (lamps) with installation keys. In multi lines diagrams it is showing all wiring and junction boxes. It can be said that they are more close to the mounting schemes. Single line diagrams are used in the drawings as they are drawn standardized symbols for switches, boxes and luminaries such as the number of conductors is shown with cross lines on a line symbolizing all conductors. You have to check compliance with standards and regulation in you country. In my country lighting installations in accordance with Regulation 3/09.06.2004 run directly hidden under plaster or laid in cable ducts. Under Article 1929 of Regulation 3 to power lighting systems for general lighting it uses wires with copper conductors and a cross section less than 1 mm ². Also according to Article 1876 lighting circuits shall be sized and protected by fuses or circuit breakers for the operating current not exceeding: for industrial and public buildings – 25A for residential and other buildings where maintenance of the lighting system is not performed by a specialist – 16A;
Switches, cables, junction boxes and connectors
There is widest variety of electrical switches for lighting control. Manufacturers offer different looks formed from simple to luxurious series. Each manufacturer provides user manual for wiring them. Here they will not be considered.
LAN over power supply network
Everyone is faced at least once with the problem to provide computer access point to a place that is physically inaccessible due to structural obstacles or due to unable to lay the new route (it would be broken esthetic appearance of the room). For example, you have changed your old TV with new one that has a LAN port, but when the wiring was done it is provided only electrical outlet. Another example is the situation when the cable trace that you need to build will go through someone else’s property. Possible solution furthermore to use WiFi Access Point, is to use existing electrical wiring in the home (dotted line in the picture below)
Disadvantages of WiFi is that it can not be used in places where there is strong attenuation of radio waves (2,5 GHz or 5 GHz) and require several devices to achieve good speed and strench of the signal, which is the least uneconomical.You come to the aid devices that use a transmission medium already established – the power supply grid in the home.
Incoming search terms:
lan over bt, .Light, earthing and lighting
Electrical instalations – Light and Power supply.
Design of electrical instalations (thre phases and single phase) for lighting and power suply in residential, offices and administartive buldings.
Project documentation includes:
- Calculations and text part .
- Quantitative calculations and bil of materials.
- Block scheme .
- Drawings.
- Scheme of el board and power distribution.
- Cabel numbering plan.
- Standards and regulations .