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Electrical installations Wiring practice by region or country North American practice United Kingdom practice Regulation of electrical installations BS 7671 UK wiring regulations IEC 60364 IEC international standard Canadian Electrical Code (CE Code) U.S. National Electrical Code (NEC) Cabling and accessories AC power plugs and sockets Cable tray Electrical conduit Mineral-insulated copper ...
Common circuit diagram symbols (US ANSI symbols) An electronic symbol is a pictogram used to represent various electrical and electronic devices or functions, such as wires, batteries, resistors, and transistors, in a schematic diagram of an electrical or electronic circuit. These symbols are largely standardized internationally today, but may ...
Simple LED (Light Emitting Diode) circuit diagram. In electronics, an LED circuit or LED driver is an electrical circuit used to power a light-emitting diode (LED). The circuit must provide sufficient current to light the LED at the required brightness, but must limit the current to prevent damaging the LED.
The ring circuit is still the most common mains wiring configuration in the UK, although both 20 A and 30 A radial circuits are also permitted by the Wiring Regulations, with a recommendation based on the floor area served (20 A for area up to 25 m 2, 30 A for up to 100 m 2).
In these systems light switches control lighting contactors, a relay that allows the manual light switch to operate on a lower current, with smaller wiring than would be required in the main lighting circuit. In the UK, putting 13-ampere BS 1363 sockets on a lighting circuit is discouraged (although not outright prohibited), but 2-ampere or 5 ...
IET Wiring Regulations", informally called in the UK electrical community "The Regs", is the national standard in the United Kingdom for electrical installation and the safety of electrical wiring systems. [1] It did not become a recognized British Standard until after the publication of the 16th edition in 1992.
In building wiring, multiway switching is the interconnection of two or more electrical switches to control an electrical load from more than one location.A common application is in lighting, where it allows the control of lamps from multiple locations, for example in a hallway, stairwell, or large room.
Although still permitted by the UK wiring regulations, BS 546 sockets are no longer used for general purposes. The type D 2 amp and 5 amp plugs are mainly used for lighting such as table lamps. Some of the type D and M varieties remain in use in other countries and in specialist applications in the UK such as stage lighting for the type M.