Wiring System
ANSWER :
Is a form of electrical circuit.
Electrical circuit
ANSWER :
Is comprised of an energy source, energy transfer medium and a load.
Energy Transfer Medium
ANSWER :
copper wire, fiber optic cables and air in the case of radiated energy
Load
ANSWER :
receives the transferred energy such as resistors, lights, speakers, motors, etc.
EMF (electromotive force)
ANSWER :
The force that moves electrical energy.
Current or Current Flow
ANSWER :
1
, The movement of electrons through a circuit that is caused by the electromotive force or
voltage applied to the circuit.
Inductance (L)
ANSWER :
Unit is the henry. It is the property of a circuit that causes an opposition to any change of
current within the circuit. As electrons flow, a magnetic field is produced. The magnetic force
induces a change in voltage.
Grounding
ANSWER :
assures transmission of electrical signals without interference from electromagnetic radia-
tion from other transmission lines and equipment. This interference, called crosstalk, can
happen from adjacent lines, motors, PCs, lights and other devices.
Grounding electrode
ANSWER :
Connection to the electrode should be less than 1 ft below the surface of the solid and the
electrode should extend at least 10 ft below ground.
Ground Loop
ANSWER :
Causes a current to flow in the low resistance of the shield resulting in electromagnetic
waves that are picked up as noise through the wire.
66 block
ANSWER :
A punchdown block that terminates 22 to 26 AWG solid copper wire. The 25 pair standard
non split 66 block contains 50 rows.
2
, 110 block
ANSWER :
To terminate on-premises wiring in structured cabling. IDC or Insulation displacement con-
tact connector is used to terminate the twisted pair. The 110 allows for a much higher den-
sity of terminations, less crosstalk and higher bandwidth data.
UF
ANSWER :
Cable can be buried into the ground. Not approved for commercial use in NM. 340.10
Balun
ANSWER :
A means of matching an unbalanced antenna or transmission line to a balanced transmis-
sion line or antenna (Usually have a transformer in them)
Bus Topology
ANSWER :
All nodes are connected to a single shared communication line
Ring Topology
ANSWER :
Topology where the computers are connected on a loop or ring.
Star Topology
ANSWER :
A topology with one central node that has each computer or network device attached to
the central node. All data first goes into the central node and then is sent out to its destina-
tion.
3
ANSWER :
Is a form of electrical circuit.
Electrical circuit
ANSWER :
Is comprised of an energy source, energy transfer medium and a load.
Energy Transfer Medium
ANSWER :
copper wire, fiber optic cables and air in the case of radiated energy
Load
ANSWER :
receives the transferred energy such as resistors, lights, speakers, motors, etc.
EMF (electromotive force)
ANSWER :
The force that moves electrical energy.
Current or Current Flow
ANSWER :
1
, The movement of electrons through a circuit that is caused by the electromotive force or
voltage applied to the circuit.
Inductance (L)
ANSWER :
Unit is the henry. It is the property of a circuit that causes an opposition to any change of
current within the circuit. As electrons flow, a magnetic field is produced. The magnetic force
induces a change in voltage.
Grounding
ANSWER :
assures transmission of electrical signals without interference from electromagnetic radia-
tion from other transmission lines and equipment. This interference, called crosstalk, can
happen from adjacent lines, motors, PCs, lights and other devices.
Grounding electrode
ANSWER :
Connection to the electrode should be less than 1 ft below the surface of the solid and the
electrode should extend at least 10 ft below ground.
Ground Loop
ANSWER :
Causes a current to flow in the low resistance of the shield resulting in electromagnetic
waves that are picked up as noise through the wire.
66 block
ANSWER :
A punchdown block that terminates 22 to 26 AWG solid copper wire. The 25 pair standard
non split 66 block contains 50 rows.
2
, 110 block
ANSWER :
To terminate on-premises wiring in structured cabling. IDC or Insulation displacement con-
tact connector is used to terminate the twisted pair. The 110 allows for a much higher den-
sity of terminations, less crosstalk and higher bandwidth data.
UF
ANSWER :
Cable can be buried into the ground. Not approved for commercial use in NM. 340.10
Balun
ANSWER :
A means of matching an unbalanced antenna or transmission line to a balanced transmis-
sion line or antenna (Usually have a transformer in them)
Bus Topology
ANSWER :
All nodes are connected to a single shared communication line
Ring Topology
ANSWER :
Topology where the computers are connected on a loop or ring.
Star Topology
ANSWER :
A topology with one central node that has each computer or network device attached to
the central node. All data first goes into the central node and then is sent out to its destina-
tion.
3
