Electrical Accessories and Their Applications: A switch is used to turn on and off a circuit. A lamp requires a holder, but a ceiling rose requires a ceiling fan, tube light, or pendant lamp. A socket is used to power a portable item such a table fan, light, electric iron, radio, or television. A plug is the end of an extension cord or power strip that fits into a wall outlet.
Electricity is the flow of electrons through a conductor such as a copper wire. Electricity is created by any number of different processes inside of a conductor when it is heated up or cooled down. These changes in temperature cause small vibrations in the conductor which emit signals that can be read as electricity when connected to a device such as a voltmeter or ammeter.
The three main types of electrical connectors are cable joints, terminal blocks, and wiring boxes. Cable joints connect two cables together at one end. They are required when several lengths of cable need to be joined together. The most common type of cable joint is called a splice. In a splice, two cables' outer jackets are stripped back to allow access to their wires which are then tied together with tape or sealed with resin. Wire nuts are another type of cable joint used where there is not enough space for a splice. With wire nuts, each cable's end is wrapped around a screw-type fastener until they reach the desired length. The ends are then trimmed off smooth with a knife or wire cutter.
Wiring devices include the following:
Any machine that is powered by electricity is considered electrical equipment. It typically consists of an enclosure, a number of electrical components, and, in some cases, a power switch. Lighting is an example of one of these. Other examples include heaters, air conditioners, and appliances such as microwaves and dishwashers. Electrical equipment can be used to perform a task or action.
Electrical equipment functions to convert electric energy into other forms of energy or work. Electrical equipment can be divided up into three main categories: (1) transmission equipment, which includes wires, cables, and poles; (2) distribution equipment, which includes circuits and terminals for distributing electricity; and (3) conversion or application equipment, which uses electricity for its output (e.g., light bulbs).
The term "electrical appliance" is often used interchangeably with "electrical equipment." However, an electrical appliance is simply something that uses electricity while electrical equipment is defined as any machine that is powered by electricity. Some examples of electrical appliances include heaters, air conditioners, and appliances such as microwaves and dishwashers. An electrical extension cord is used to connect several electrical appliances so they can be used together easily. Examples of electrical equipment include light switches and outlets.
A socket-outlet adapter is the full name of an adaptor. It is also known as a light holder plug. In order to deliver power to a portable item such as a table fan, hand light, etc. it must be done through a socket-outlet adapter.
The term outlet adapter is often used instead. They are usually made for certain sizes of outlets, but some will work with smaller or larger ones. An "adapter cord" is what you get when you buy them together; normally consisting of two parts - one male and one female - they fit into each other like a key into its lock. You can use any length of cord you want for an adapter, but if you plan to move it around much, make it longer than 20 feet (6 m) because more often than not, it will need to be split up into two pieces to fit through doors.
Adapter plugs have three holes: one large central hole for inserting the core of a lamp bulb, and two smaller holes on either side of it for receiving the pins. Most commonly, these are duplex plugs - that is, they have two sets of wires inside them, one set for live electricity and another set for dead electricity. The third hole is just for exposing the plug so it can be inserted into a socket.