TLE

AC power plugs and sockets

connecting electrically operated devices

electric plug

male electrical connector. connect mechanically and electrically to slots in the matching female socket

Wall sockets (aka power points, power sockets, electric receptacles, or electrical outlets)

are female electrical connectors that have slots or holes which accept and deliver current to the prongs of inserted plugs

NEMA 1-15 (ungrounded)

two flat parallel non-coplanar blades and slots. use in devices not requiring a ground connection like lamps

NEMA 5-15 (NORTH AMERICA 15 A/125 V grounded)

two flat parallel blades and round u shaped. American standard and Canadian standard

NEMA 5-20

T- slot. allow either 15-amps parallel blade plugs or 20-amps plugs to be used

CEE 7/16 (Europlug 2.5 A/250 V unearthed)

two prong plug. is non earthed and has two round 4 mm pins

BS 4573 (UK shaver)

larger version of the type C plug for use with shavers in bath or shower rooms

Variations in socket

Some Type C sockets can only take 4mm pins or have plastic barriers in place to prevent schuko or french plugs from entering

BS 546 (5 A/250 V earthed) or D plug

standard for india and pakistan. It have three large round pins in a triangular pattern

BS 546 (15 A/250 V earthed) or M Plug

also reffered to as type M. it pins size is 7.05mm x 21.1 mm

French Type E

standard in Germany and other continental European countries

CEE 7/4 (German “Schuko” 16 A/250 V earthed)

has two earthing clips on the sides of the plug instead of a female earth contact

CEE 7/7 (French/German 16 A/250 V earthed)

In order to bridge the difference between sockets E and F

fuse

is the simplest circuit protection device

Type S plug fuse

special size-limiting characteristics for each amperage range

Edison-base plug fuse

a base that fits the same socket as a regular based incandescent bulb

Single element fuse

contains only one element and is not designed to carry an overload

Dual element fuse

thermal cutout element with a time delay that permits momentary harmless inrush currents to flow without harming the fuse

ferrule type cartridge fuse

metal caps on a cylindrical case.

blade type cartdrige fuse

flat contact blades on a cylindrical case

Circuit breaker

is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by overload or short circuit

Glass tube

provides an airtight enclosure

Bases

end of tubes that connect the lamps to the electrical circuit

Cathodes

heat up and emit electrons into the tube

Mercury

droplets of ? are placed into the tube

Filling Gas

a small amount of highly purified argon ? is placed in the tube

The ballast

controls and regulates this current flow

Lamp holder

is used to keep the lamp in place

tube itself

The heart of the fluorescent fixture is the ?