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ELECTRICAL
ACCESSORIES
PRAYAG RAJ
B TECH (EL)
7TH SEMESTER
17001007044
PVC CHANNELS
 PVC Channel is a plastic enclosure that typically has a
rectangular cross-section with a removable side on top and
slots at the sides. The PVC channel is used to protect, encase
and organize wires and cables in control panel and
distribution board etc. PVC Channels are also commonly
called PVC Cable Tray, Electrical Raceway, Panel Trunking,
Slotted Trunking etc. by manufacturers.
CABLE GLAND
 Cable glands are defined as ‘mechanical cable entry devices’
which are used in conjunction with cable and wiring for
electrical, instrumentation & control, and automation systems.
It provides strain-relief and connects by a means suitable for
the type and description of cable for which it is designed
TERMINAL STRIP
 A terminal block (also called as terminal strip or terminal
connector) is a modular block with an insulated frame that
secures two or more wires together. It consists of a clamping
component and a conducting strip. Terminal blocks keep
connections much more secure and wires well organized.
BUS BAR
 It is a conductor or a group of conductor used for collecting
electric power from the incoming feeders and distributes them
to the outgoing feeders. The electrical bus bar is available in
rectangular, cross-sectional, round and many other shapes.
The rectangular bus bar is mostly used in the power system.
The copper and aluminum are used for the manufacturing of
the electrical bus bar.
EMERGENCY STOP
 Emergency stop is a function that is intended to avert harm
or to reduce existing hazards to persons, machinery, or work
in progress. It is a safety mechanism used to shut off
machinery in an emergency, when it cannot be shut down in
the usual manner. Emergency stop button. a red
mushroom-headed button that, when activated, will
immediately start the emergency stop sequence.
SWITCH
 A switch is used to make or break the electric circuit. Or it is
used to switch “ON or OFF” the electric supply. The switches
may be one-way switch and two-way switch. The one-way
switch is used to control single circuit or lamp, where as the
two-way switch is used to divert the flow of current to either of
two directions.
LAMP HOLDER
 As the name indicates, a lamp holder is used to hold the lamp,
and connect it electrically to supply terminals, required for
lighting purpose. The lamp holders may be bayonet cap and
screw type. Depending upon our requirement, these lamp
holders are also manufactured in different designs
Batten Lamp Holder Pendant Holder Angle lamp holder
SOCKETS
 The sockets have insulated base with molded base having
three terminal sleeves. The two terminal sleeves having same
cross-section are used to connect phase and neural wire
where as the third having greater cross-section is used to
connect with earth wire. These are made for 5 amps and 15
amps load. Two-pin sockets are also available, in which only
phase and neutral wires are connected.
MAIN SWITCH
 As the name indicates that this switch is used to switch “on or
off” the main supply. In other words these switches are used
to control the whole supply for a house, office and machine. In
single-phase circuit main switches are used, whereas in three-
phase circuits iron clad double pole (I.CT.P). main switches
are used to control the supply. These are available in 15 Amp,
30 Amp, 60 Amps and 100 amperes current rating.
MINIATURE CIRCUIT BREAKER
 A miniature circuit breaker is an electro-mechanical safety
device which operate and disconnect the circuit supply, when
the current drawn from the circuit increases to a pre-
determined value. An MCB will normally operates at 1.25
times its rated current value. It can be reset, by simply lifting
its operational knob, where as the fuse has to replace its fuse
wire.
PLUGS
 The three pins include; earth pin, neutral pin and live pin.
The pins are used to connect the wires in the cable of an
electrical appliance with the wires of a minas socket supply.
In a plug, the live wire (brown) and the neutral wire (blue) are
the two wires that form the complete circuit with a household
appliance. The earth wire (green and yellow) does not
normally form part of the circuit and is included as a
safety wire.
RELAY
 Relays are a type of switch. When given a low draw electrical
input, the relay's internal parts snap together, closing a circuit
that requires a larger amount of electricity to power a specific
component. Inside a relay you’ll find two metal tangs. These
metal tangs are designed to snap together when a low voltage
electrical signal is applied to them. The metal tangs are large
enough to safely transmit heavy electrical loads.
ISOLATOR
 The isolator can be defined as; it is one type of mechanical
switch used to isolate a fraction of the electrical circuit when it
is required. Isolator switches are used for opening an
electrical circuit in the no-load condition. It is not proposed to
be opened while current flows through the line. Generally,
these are employed on circuit breaker both the ends thus the
circuit breaker repair can be done easily without any risk.
WIRES & CABLES
 An electrical cable is an assembly of one or
more wires running side by side or bundled, which is used to
carry electric current. A cable assembly is the composition of
one or more electrical cables and their
corresponding connectors. A cable assembly is not
necessarily suitable for connecting two devices but can be a
partial product
ELECTRIC CHOKE
 A choke is an inductor used to block higher-frequency while
passing direct current (DC) and lower-frequencies
of alternating current (AC) in an electrical circuit. A choke
usually consists of a coil of insulated wire often wound on
a magnetic core, although some consist of a doughnut-shaped
"bead" of ferrite material strung on a wire. The
choke's impedance increases with frequency. Its low electrical
resistance passes both AC and DC with little power loss, but
its reactance limits the amount of AC passed.

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electrical accessories

  • 1. ELECTRICAL ACCESSORIES PRAYAG RAJ B TECH (EL) 7TH SEMESTER 17001007044
  • 2. PVC CHANNELS  PVC Channel is a plastic enclosure that typically has a rectangular cross-section with a removable side on top and slots at the sides. The PVC channel is used to protect, encase and organize wires and cables in control panel and distribution board etc. PVC Channels are also commonly called PVC Cable Tray, Electrical Raceway, Panel Trunking, Slotted Trunking etc. by manufacturers.
  • 3. CABLE GLAND  Cable glands are defined as ‘mechanical cable entry devices’ which are used in conjunction with cable and wiring for electrical, instrumentation & control, and automation systems. It provides strain-relief and connects by a means suitable for the type and description of cable for which it is designed
  • 4. TERMINAL STRIP  A terminal block (also called as terminal strip or terminal connector) is a modular block with an insulated frame that secures two or more wires together. It consists of a clamping component and a conducting strip. Terminal blocks keep connections much more secure and wires well organized.
  • 5. BUS BAR  It is a conductor or a group of conductor used for collecting electric power from the incoming feeders and distributes them to the outgoing feeders. The electrical bus bar is available in rectangular, cross-sectional, round and many other shapes. The rectangular bus bar is mostly used in the power system. The copper and aluminum are used for the manufacturing of the electrical bus bar.
  • 6. EMERGENCY STOP  Emergency stop is a function that is intended to avert harm or to reduce existing hazards to persons, machinery, or work in progress. It is a safety mechanism used to shut off machinery in an emergency, when it cannot be shut down in the usual manner. Emergency stop button. a red mushroom-headed button that, when activated, will immediately start the emergency stop sequence.
  • 7. SWITCH  A switch is used to make or break the electric circuit. Or it is used to switch “ON or OFF” the electric supply. The switches may be one-way switch and two-way switch. The one-way switch is used to control single circuit or lamp, where as the two-way switch is used to divert the flow of current to either of two directions.
  • 8. LAMP HOLDER  As the name indicates, a lamp holder is used to hold the lamp, and connect it electrically to supply terminals, required for lighting purpose. The lamp holders may be bayonet cap and screw type. Depending upon our requirement, these lamp holders are also manufactured in different designs Batten Lamp Holder Pendant Holder Angle lamp holder
  • 9. SOCKETS  The sockets have insulated base with molded base having three terminal sleeves. The two terminal sleeves having same cross-section are used to connect phase and neural wire where as the third having greater cross-section is used to connect with earth wire. These are made for 5 amps and 15 amps load. Two-pin sockets are also available, in which only phase and neutral wires are connected.
  • 10. MAIN SWITCH  As the name indicates that this switch is used to switch “on or off” the main supply. In other words these switches are used to control the whole supply for a house, office and machine. In single-phase circuit main switches are used, whereas in three- phase circuits iron clad double pole (I.CT.P). main switches are used to control the supply. These are available in 15 Amp, 30 Amp, 60 Amps and 100 amperes current rating.
  • 11. MINIATURE CIRCUIT BREAKER  A miniature circuit breaker is an electro-mechanical safety device which operate and disconnect the circuit supply, when the current drawn from the circuit increases to a pre- determined value. An MCB will normally operates at 1.25 times its rated current value. It can be reset, by simply lifting its operational knob, where as the fuse has to replace its fuse wire.
  • 12. PLUGS  The three pins include; earth pin, neutral pin and live pin. The pins are used to connect the wires in the cable of an electrical appliance with the wires of a minas socket supply. In a plug, the live wire (brown) and the neutral wire (blue) are the two wires that form the complete circuit with a household appliance. The earth wire (green and yellow) does not normally form part of the circuit and is included as a safety wire.
  • 13. RELAY  Relays are a type of switch. When given a low draw electrical input, the relay's internal parts snap together, closing a circuit that requires a larger amount of electricity to power a specific component. Inside a relay you’ll find two metal tangs. These metal tangs are designed to snap together when a low voltage electrical signal is applied to them. The metal tangs are large enough to safely transmit heavy electrical loads.
  • 14. ISOLATOR  The isolator can be defined as; it is one type of mechanical switch used to isolate a fraction of the electrical circuit when it is required. Isolator switches are used for opening an electrical circuit in the no-load condition. It is not proposed to be opened while current flows through the line. Generally, these are employed on circuit breaker both the ends thus the circuit breaker repair can be done easily without any risk.
  • 15. WIRES & CABLES  An electrical cable is an assembly of one or more wires running side by side or bundled, which is used to carry electric current. A cable assembly is the composition of one or more electrical cables and their corresponding connectors. A cable assembly is not necessarily suitable for connecting two devices but can be a partial product
  • 16. ELECTRIC CHOKE  A choke is an inductor used to block higher-frequency while passing direct current (DC) and lower-frequencies of alternating current (AC) in an electrical circuit. A choke usually consists of a coil of insulated wire often wound on a magnetic core, although some consist of a doughnut-shaped "bead" of ferrite material strung on a wire. The choke's impedance increases with frequency. Its low electrical resistance passes both AC and DC with little power loss, but its reactance limits the amount of AC passed.