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WorksheetsUTILITIES : ELECTRICAL CONCEPT FOR ARCHITECTS
Total questions: 50
Worksheet time: 25mins
The main purpose of requiring a minimum service drop height of 3.0 meters is to:
reduce voltage loss
prevent accidental human contact
allow future upgrades
improve visual clearance
Which location best complies with PEC requirements for the main service panel?
ceiling space above corridors
locked mechanical room
accessible interior location
exterior wall exposed to rain
A 2.0 mm² copper wire used for lighting circuits should be protected by a:
30A breaker
20A breaker
15A breaker
40A breaker
Installing a 30A breaker on a 2.0 mm² wire is unsafe because:
breakers trip too early
voltage increases excessively
the wire may overheat before tripping
grounding becomes ineffective
Which appliance must be provided with a dedicated circuit?
table lamp
television
refrigerator
phone charger
Kitchen and bathroom outlets must be protected by:
AFCI
surge protectors
GFCI
isolation transformers
The standard mounting height for wall switches is approximately:
0.30 m
0.60 m
1.20 m
1.80 m
Which wire type is specifically designed for direct underground burial?
THHN
NM
UF
TW
The minimum wire size for general convenience outlets is:
2.0 mm²
3.5 mm²
5.5 mm²
8.0 mm²
Lighting circuits are separated from power circuits primarily to:
reduce material cost
improve architectural layout
enhance safety and load control
simplify wiring
A continuous electrical load operates for more than:
1 hour
2 hours
3 hours
6 hours
A 20A breaker supplying a continuous load should be limited to:
20A
18A
16A
15A
Ten LED lamps rated at 10 W each have a total load of:
10 W
50 W
100 W
1,000 W
A connected load of 8,000 W with an 80% demand factor results in:
6,400 W
7,200 W
8,000 W
10,000 W
A 6,900 W demand load at 230 V draws approximately:
20 A
25 A
30 A
35 A
Which breaker size best allows allowance for future expansion for a 30 A load?
30 A
35 A
40 A
50 A
Which color temperature is most suitable for hospitals?
warm white
neutral white
cool white
daylight
Motion sensors should NOT control:
corridors
toilets
storage rooms
emergency lighting
Which conduit is most commonly used for residential wiring?
PVC
wood molding
rubber hose
open wiring
The minimum grounding rod length required is:
1.2 m
1.8 m
2.4 m
3.0 m
Which appliance typically requires a 5.5 mm² wire?
desk fan
refrigerator
small air conditioner
television
Increasing wire size in long runs helps reduce:
breaker tripping
lighting glare
voltage drop
grounding resistance
The main purpose of grounding is to:
increase electrical efficiency
stabilize voltage
provide a safe path for fault current
reduce energy use
A 2,000 W water heater should be connected to:
a general outlet circuit
a lighting circuit
a dedicated circuit
an extension cord
An 8.0 mm² copper wire is normally protected by:
15A
20A
30A
40–60A
THHN wire is best described as:
low-heat resistant
waterproof only
nylon-coated and heat resistant
for underground use only
Under sizing electrical panels may result in:
lower construction cost
reduced voltage
limited future expansion
improved safety
Which strategy reduces energy use without affecting comfort?
increasing lamp wattage
installing motion sensors
eliminating windows
fixed lighting schedules
Standard outlet mounting height is:
150 mm
300 mm
600 mm
1.20 m
A 1,500W appliance at 230V draws approximately:
3 A
6.5 A
10 A
15 A
Which device detects current leakage?
dimmer switch
GFCI
relay
transformer
Aluminum wires must be larger than copper because aluminum:
is heavier
has lower conductivity
melts faster
is more expensive
Which lighting fixture is mainly decorative?
recessed downlight
pendant light
task lamp
emergency light
Net metering allows:
battery charging
voltage regulation
exporting excess solar power to the grid
inverter bypass
Which solar system operates independently from the grid?
grid-tied
hybrid
off-grid
net-metered
Demand factors are applied because:
codes require overdesign
loads rarely operate simultaneously
wire sizes are fixed
voltage fluctuates
Which material improves fire safety by expanding when heated?
PVC conduit
intumescent-coated cables
copper wire
aluminum conductor
Improper outlet height may:
improve access
violates PEC ergonomics
reduces breaker size
increase efficiency
Which lighting must remain on regardless of occupancy?
corridor lights
toilet lights
storage room lights
emergency lights
The standard grounding wire color is:
black
red
green
white
Minimum service disconnect size for a 10 kVA dwelling is:
30 A
40 A
50 A
60 A
Which outlet improves child safety?
USB outlet
GFCI outlet
tamper-resistant outlet
smart outlet
Best lighting fixture for outdoor walkways is:
table lamp
chandelier
bollard light
pendant light
Oversized breakers on small wires can cause:
higher efficiency
energy savings
wire failure
voltage stability
Which device enables remote circuit monitoring?
junction box
smart breaker
toggle switch
fuse
Load calculations are finalized during:
finishing stage
rough-in stage
pre-construction phase
final inspection
Coordinating outlet placement with furniture avoids:
increased lighting load
blocked and unusable outlets
higher breaker sizes
panel congestion
Which sensor adjusts lighting based on daylight?
occupancy sensor
photoelectric sensor
dimmer switch
relay
CAT-6 cables are mainly used for:
power distribution
grounding
data transmission
lighting circuits
The architect’s main role in electrical design is to:
compute exact amperage
install wiring
coordinate safety, space, and compliance
select breaker brands
