COSC 325 - LATEST
ELECTRICAL, COSC 325
- ELECTRICAL EXAM
How many feet clearance is needed for any kind of electrical gear? -
ANSWERS-3 feet
How tall can the tallest breaker or switch be? - ANSWERS-6'7"
MCB - ANSWERS-(M.ain C.ircuit B.reaker)
Will cut off all electrical power.
MLO - ANSWERS-Main Lug Only, meaning no breaker switch
sign for switch - ANSWERS-$
What division is electrical - ANSWERS-26
What plans show how panels fed and size of feeders - ANSWERS-Riser
plans
END OF
PAGE
1
, COSC 325 - LATEST
ELECTRICAL, COSC 325
- ELECTRICAL EXAM
What shows how power gets to building - ANSWERS-Site plan
NEC - ANSWERS-Governs electrical installation on most projects
AWG (American Wire Gauge) - ANSWERS-A standard rating that
indicates the diameter of a wire, such as the conducting core of a coaxial
cable.
Lowest LEED certification level - ANSWERS-Certified
Which is bigger, 12 AWG or 4/0? - ANSWERS-4/0
Overhead Primary - ANSWERS-Brings power to transformers
Overhead secondary - ANSWERS-Carries power out of transformers
As voltage goes down....... - ANSWERS-Amps go up
END OF
PAGE
2
, COSC 325 - LATEST
ELECTRICAL, COSC 325
- ELECTRICAL EXAM
What does amps have to do with wire size - ANSWERS-Amps Drive
wire size
Kilavolt amp ratings come in multiples of...... - ANSWERS-25
Voltage (volts) is like.... - ANSWERS-Water pressure
Amperage (amps) is like.... - ANSWERS-Water flow
Formula for power (watts) - ANSWERS-Volts X Amps
Power is measured in.... - ANSWERS-Watts or Voltamps
The 2 components of power are - ANSWERS-Volts and amps
Current is electrical __________ and is measured in ___________ -
ANSWERS-Flow
Amps
END OF
PAGE
3
, COSC 325 - LATEST
ELECTRICAL, COSC 325
- ELECTRICAL EXAM
Voltage is electrical_________and is measured in _________ -
ANSWERS-Pressure
Volts
AC stands for - ANSWERS-alternating current
Dc Stands for - ANSWERS-direct current
Single Phase 120/240V - ANSWERS-- Two hot wires (phases)
- One neutral Wire
- One ground wire
-240, 230, 240V are all the same
-120, 115, 110V are all the same
Three phase 480/277V - ANSWERS-- High voltage
- three hot wires, each with 277V
END OF
PAGE
4
ELECTRICAL, COSC 325
- ELECTRICAL EXAM
How many feet clearance is needed for any kind of electrical gear? -
ANSWERS-3 feet
How tall can the tallest breaker or switch be? - ANSWERS-6'7"
MCB - ANSWERS-(M.ain C.ircuit B.reaker)
Will cut off all electrical power.
MLO - ANSWERS-Main Lug Only, meaning no breaker switch
sign for switch - ANSWERS-$
What division is electrical - ANSWERS-26
What plans show how panels fed and size of feeders - ANSWERS-Riser
plans
END OF
PAGE
1
, COSC 325 - LATEST
ELECTRICAL, COSC 325
- ELECTRICAL EXAM
What shows how power gets to building - ANSWERS-Site plan
NEC - ANSWERS-Governs electrical installation on most projects
AWG (American Wire Gauge) - ANSWERS-A standard rating that
indicates the diameter of a wire, such as the conducting core of a coaxial
cable.
Lowest LEED certification level - ANSWERS-Certified
Which is bigger, 12 AWG or 4/0? - ANSWERS-4/0
Overhead Primary - ANSWERS-Brings power to transformers
Overhead secondary - ANSWERS-Carries power out of transformers
As voltage goes down....... - ANSWERS-Amps go up
END OF
PAGE
2
, COSC 325 - LATEST
ELECTRICAL, COSC 325
- ELECTRICAL EXAM
What does amps have to do with wire size - ANSWERS-Amps Drive
wire size
Kilavolt amp ratings come in multiples of...... - ANSWERS-25
Voltage (volts) is like.... - ANSWERS-Water pressure
Amperage (amps) is like.... - ANSWERS-Water flow
Formula for power (watts) - ANSWERS-Volts X Amps
Power is measured in.... - ANSWERS-Watts or Voltamps
The 2 components of power are - ANSWERS-Volts and amps
Current is electrical __________ and is measured in ___________ -
ANSWERS-Flow
Amps
END OF
PAGE
3
, COSC 325 - LATEST
ELECTRICAL, COSC 325
- ELECTRICAL EXAM
Voltage is electrical_________and is measured in _________ -
ANSWERS-Pressure
Volts
AC stands for - ANSWERS-alternating current
Dc Stands for - ANSWERS-direct current
Single Phase 120/240V - ANSWERS-- Two hot wires (phases)
- One neutral Wire
- One ground wire
-240, 230, 240V are all the same
-120, 115, 110V are all the same
Three phase 480/277V - ANSWERS-- High voltage
- three hot wires, each with 277V
END OF
PAGE
4
