WorksheetsPEC DEET
Total questions: 60
Worksheet time: 30mins
Name
Class
Date
1.
During inspection, a neutral conductor is found bonded to a panel enclosure downstream of the service disconnect. This condition is:
a)
A. Permitted to reduce impedance
b)
B. A violation because bonding of grounded conductors is limited to the service equipment
c)
C. Required when supplying multiwire branch circuits
d)
D. None of the above
2.
3. A feeder supplies a continuous load of 72 A and a noncontinuous load of 18 A. What is the minimum feeder ampacity required?
a)
A. 180A
b)
B. 100 A
c)
C. 90 A
d)
D. None of the above
3.
3. A feeder supplies a continuous load of 72 A and a noncontinuous load of 18 A. What is the minimum feeder ampacity required?
a)
A. 180A
b)
B. 100 A
c)
C. 90 A
d)
D. None of the above
4.
4. A receptacle is installed within 1.2 meters of a laundry sink in a dwelling unit. Which protection is required by PEC?
a)
A. AFCI protection only
b)
B. Weather-resistant receptacle
c)
C. GFCI protection regardless of circuit rating
d)
D. None of the above.
5.
5. A dwelling unit kitchen countertop receptacle is supplied by a 20 A branch circuit that also feeds lighting outlets in the dining area. This installation is:
a)
A. Not permitted because small-appliance branch circuits shall not supply other outlets
b)
B. Allowed if the lighting load is switched
c)
C. None of the above
d)
D. Allowed if total load does not exceed 16 A
6.
6. A feeder supplies two detached buildings. An equipment grounding conductor is installed with the feeder, but no grounding electrode system is provided at the second building. This installation is:
a)
A. none of the above
b)
B. Acceptable if the feeder is underground
c)
C. Acceptable if the feeder originates from the same service
d)
D. A violation because each building must have a grounding electrode system
7.
7. In calculating service loads for a dwelling, which load is permitted to be reduced using demand factors under Article 2.20?
a)
A.General lighting and receptacle loads
b)
B. Largest motor load
c)
C. Small-appliance branch circuit load
d)
D. None of the above
8.
8. An overhead outside branch circuit conductor passes over a residential driveway. Which condition makes the installation code-compliant?
a)
A. Using Insulated conductors
b)
B. Maintaining the minimum vertical clearance required by PEC
c)
C. Installing AFCI protection at the panel
d)
D. None of the above
9.
9. A service disconnect is installed inside a locked electrical room accessible only to maintenance personnel. According to PEC Article 2.30, this installation is:
a)
A. Permitted provided the disconnect is readily accessible to authorized persons
b)
B. Permitted only for residential occupancies
c)
C. Not permitted under any circumstances
d)
D. None of the above
10.
10. An industrial facility operates a 4.16 kV distribution system under engineering supervision. Which statement correctly applies PEC Article 2.40.9?
a)
A. Overcurrent protection may be omitted entirely
b)
B. Standard low-voltage breakers may be used if oversized
c)
C. High-voltage-rated protective devices with coordinated protection are required
d)
D. None of the above
11.
11. Which of the following is a permitted use of flexible cords and cables?
a)
A.Wiring of luminaires
b)
B. Run through walls and ceilings
c)
C. As fixed wiring of a building
d)
D. None of the above
12.
12. What is the maximum allowed height of a switch operating handle above the floor?
a)
A. 1500 mm
b)
B. 1800 mm
c)
C. 1990 mm
d)
D. None of the above
13.
13. Which receptacle is required in accessible dwelling and public areas to prevent insertion of foreign objects?
a)
A. Tamper-Resistant Receptacle
b)
B. Grounding-Type Receptacle
c)
C. Weather-Resistant Receptacle
d)
D. None of the above
14.
14. Which is a requirement for panelboards under Article 4.8?
a)
A. Must exceed the number of overcurrent devices
b)
B. Must have a main overcurrent protective device not exceeding its rating
c)
C. Can be installed in wet locations without enclosure
d)
D. None of the above
15.
15. Which device selects different modes such as Manual/Auto or Forward/Reverse?
a)
A. Selector switch
b)
B. Pilot light
c)
C. Pushbutton
d)
D. None of the above
16.
16. Which luminaire is permitted in wet or damp locations?
a)
A. Open-lamp fixture hanging by wires
b)
B. Bare incandescent lamp inside a closet
c)
C. LED panel light in a listed ceiling grid
d)
D. None of the above
17.
17. Why are lampholders with exposed live metal parts not permitted?
a)
A. They pose a severe shock hazard to users
b)
B. They are too expensive for general use
c)
C. They consume more energy than enclosed lampholders
d)
D. None of the above
18.
18. Which information is required on an appliance nameplate?
a)
A. Store of purchase
b)
B. None of the above
c)
C. Color and model design
d)
D. Manufacturer’s name and rated voltage
19.
19. What is the maximum allowable voltage for low-voltage lighting systems?
a)
A. 30 V AC or 60 V DC
b)
B. 20 V AC or 40 V DC
c)
C. 15 V AC or 30 V DC
d)
D. None of the above
20.
20. Which statement correctly describes the two boiler types presented?
a)
A. Resistance-type boilers use water as the resistor; electrode-type boilers use a metal element in water.
b)
B. Resistance-type boilers operate like a large kettle with heat from a resistive metal element in water; electrode-type boilers use water as the resistor and are typically for high-voltage industrial use.
c)
C. Both resistance-type and electrode-type boilers are mainly used for residential low-voltage applications.
d)
D. None of the above
21.
21. According to the PEC, what is the primary goal of electrical system grounding?
a)
A. To limit voltage imposed by lightning or line surges and stabilize voltage to earth
b)
B. To increase the impedance of the circuit
c)
C. To allow the earth to serve as the main ground-fault current path
d)
D. None of the above
22.
22. What is the minimum length required for a rod or pipe electrode to be used in a grounding electrode system?
a)
A. 1500 mm
b)
B. 4500 mm
c)
C. 6000 mm
d)
D. 2400 mm
23.
23. How must an insulated Equipment Grounding Conductor (EGC) sized 22 mm² or larger be identified at its termination?
a)
A.By stripping the insulation or coloring the insulation green
b)
B. By marking it with red tape
c)
C. By using a blue pressure wire connector
d)
D. None of the above
24.
24. What is the minimum size for a copper grounding conductor used for instrument transformer circuits?
a)
A. 2.0 mm²
b)
B. 3.5 mm²
c)
C. 5.5 mm²
d)
D. None of the above
25.
25. Where should a Type 1 Surge-Protective Device (SPD) be connected?
a)
A. On the supply side of the service disconnect
b)
B. On the load side of the branch-circuit overcurrent protection
c)
C. Only the equipment served
d)
D. None of the above
26.
26. What is the minimum copper conductor size required for connecting SPDs rated 1000 volts or less?
a)
A. 1.25 mm²
b)
B. 8.0 mm²
c)
C. 2.0 mm²
d)
D. None of the above.
27.
27. In a lightning protection system, what is the term for a spark between nearby metal objects caused by a lightning strike?
a)
A. Side flash
b)
B. Air Terminal
c)
C. Counterpoise
d)
D. None of the above.
28.
28. For ordinary buildings (Class I), what is the minimum distance the tip of an air terminal must extend above the object it protects?
a)
A. 100 mm
b)
B. 300 mm
c)
C. 900 mm
d)
D.254 mm
29.
29. A smoke stack is classified as "heavy-duty" if it exceeds what height and cross-sectional area?
a)
A. 23 m height and 0.32 m² area
b)
B.15 m height and 0.15 m² area
c)
C. 30 m height and 0.50 m² area
d)
D. None of the above.
30.
30. What is the minimum thickness required for a steel tank roof to be considered "self-protecting" against lightning?
a)
A. 1.6 mm
b)
B. 4.8 mm
c)
C. 3.8 mm
d)
D. None of the above.
31.
31. Aside from being installed inside surface metal raceways, what is the maximum ampere rating for branch circuits supplied by Type FC (Flat Cable) assemblies, and what specific protection is required if they are installed at a height below 2500 mm?
a)
A. 30 amperes; they must be covered with a protective shield
b)
B. 20 amperes; no additional protection required if inside a raceway
c)
C. 30 amperes; they must be encased in rigid metal conduit
d)
D. None of the above
32.
32. According to electrical standards for Type FC (Flat Cable) assemblies, what is the required conductor material and the minimum cross-sectional area for each conductor?
a)
A. Solid aluminum; 3.5 mm²
b)
B. Stranded copper; 5.5 mm²
c)
C. Stranded aluminum; 5.0 mm²
d)
D. None of the above
33.
33. What is the minimum bending radius for Type AC cable?
a)
A. Five times the cable diameter
b)
B. Three times the cable diameter
c)
C. Two times the cable diameter
d)
D. Ten times the cable diameter
34.
34. Which of the following best describes the proper application of an Integrated Gas Spacer (IGS) according to electrical installation standards?
a)
A. It is used for aerial electrical installations attached to building walls
b)
B. It is mounted inside panelboards for circuit protection
c)
C. It is installed underground to provide separation and insulation for gas-filled electrical systems
d)
D. It is used to support overhead service drops on rooftops
35.
35. Why are shields grounded in electrical and electronic systems?
a)
A. To provide a low-impedance path for unwanted noise currents, preventing them from coupling into signal conductors
b)
B. To improve the color coding of cables
c)
C.To increase the voltage level of signals
d)
D. To reduce the physical size of cables
36.
36. What is a grounded shield?
a)
A. An insulating layer used to increase signal strength
b)
B.A power supply backup system
c)
C. A resistor used to limit current flow
d)
D. A conductive layer placed around a cable or enclosure and connected to ground to block electromagnetic interference (EMI)
37.
37. What best describes Armored Cable (Type AC)?
a)
A. A composite assembly of insulated conductors in flexible metallic armor
b)
B. A single insulated conductor.
c)
C. A nonmetallic sheathed cable
d)
D. A rigid metal conduit
38.
38. Where is FCC usually installed?
a)
A. Inside ceilings
b)
B. Under carpet tiles or on floors
c)
C. On rooftops
d)
D. None of the above
39.
39. Which of the following best describes a single conductor?
a)
A. None of the Above
b)
B. It is commonly used in under-carpet or flat cable wiring systems
c)
C. It has a metallic armor that serves as the primary grounding path
d)
D. It consists of multiple insulated conductors bundled together under one outer jacket
40.
40. In electrical wiring installations, a single conductor is best described as which of the following?
a)
A. A factory-assembled cable containing two or more conductors with a common outer sheath.
b)
B. A conductor specifically designed for direct burial without additional protection.
c)
C. none of the above
d)
D. A wiring method that includes built-in mechanical protection and grounding.
41.
D. A wiring method that includes built-in mechanical protection and grounding.
a)
A. solid copper
b)
B. aluminum
c)
C. Steel
d)
D. None of the above
42.
42. Which cable type is designed to withstand both physical impact and corrosive conditions in underground installations?
a)
A. PVC insulated cable
b)
B. Flexible conduit
c)
C. None of the above
d)
D. Mineral insulated metal-sheathed cable
43.
43. What is the primary purpose of the metal cladding in a metal-clad cable?
a)
A.To provide mechanical protection to the cable
b)
B. To increase the cable's current-carrying capacity
c)
C. To reduce electromagnetic interference (EMI)
d)
D. None of the above
44.
44. What is the typical voltage range for medium voltage cables?
a)
A. 1 kV – 10 kV
b)
B. 11 kV – 33 kV
c)
C. 1 kV – 69 kV
d)
D. None of the above
45.
45. Which statement best describes Intermediate Metal Conduit (IMC)?
a)
A. IMC is a steel conduit that is lighter and thinner than RMC while still providing good mechanical protection and corrosion resistance.
b)
B. IMC is a nonmetallic conduit commonly used only in residential indoor applications.
c)
C. IMC cannot be installed in wet or outdoor locations due to corrosion concerns.
d)
D. None of the above
46.
46. What is a primary advantage of using Rigid Metal Conduit (RMC)?
a)
A. It is more flexible than EMT
b)
B. It does not require threading for connections
c)
C. It provides robust protection to electrical cables and wiring
d)
D. None of the above
47.
47. Which cable type is designed for aboveground applications, is flame-resistant and moisture-resistant, and is commonly used for service masts, exterior walls, feeders, and branch circuits?
a)
A. None of the above
b)
B. Type THHN
c)
C. Type UF
d)
D. Type USE
48.
48. Which cable type is intended for underground direct burial, is moisture-resistant, and is commonly used for underground service laterals, even though it is not required to be flame-retardant?
a)
A. Type SE
b)
B. Type NM
c)
C. Type MC
d)
D. None of the above
49.
49. Which of the following locations is NOT permitted for the installation of Flexible Metal Conduit (Type FMC)?
50.
50. According to PEC rules, what is the maximum total degrees of bends allowed between pull points for both FMC and LFMC?
a)
A. 180 degrees
b)
B. 360 degrees
c)
C. 540 degrees
d)
D. None of the above
51.
51. What is the maximum total bend allowed in one continuous RTRC run?
a)
A. 360 degrees
b)
B. 270 degrees
c)
C. 380 degrees
d)
D. None of the above
52.
52. Which conduit type is best suited for areas with frequent movement or vibration and is not approved as a standalone raceway unless specifically permitted by PEC?
a)
A. Electrical Metallic Tubing
b)
B. Flexible Metallic Tubing
c)
C. Electrical Non-Metallic Tubing
d)
D. None of the above
53.
53. What is the primary purpose of an auxiliary gutter?
a)
A. Supplement wiring spaces
b)
B. Enclose switches and circuit breakers
c)
C. Protect conductors underground
d)
D. None of the above
54.
54. Which is NOT permitted for metal wireways?
a)
A. Exposed work
b)
B. Hazardous locations (if permitted)
c)
C. Severe corrosive environments
d)
D. None of the above
55.
55. If a Cablebus system is installed vertically through a floor, what is the minimum height it must be totally enclosed above the floor?
a)
A. 1,800 mm
b)
B. 1,200 mm
c)
C. 900 mm
d)
D. None of the above
56.
56. For Cellular Floor Raceways, which requirement is strictly enforced?
a)
A. Fill up to 80% of the cell with wires
b)
B. None of the above
c)
C. Splices may be made anywhere
d)
D. Abandoned wires must be removed
57.
57. What is the main use of busway?
a)
A. Efficient, flexible, and safe distribution of high-capacity electrical power
b)
B. Faster electricity distribution
c)
C. Saving electricity consumption
d)
D. None of the above
58.
58. Where does bus way usually installed
a)
A. Outdoor places
b)
B. Mounted overhead or vertically in a building's core
c)
C. Near hot places
d)
D. None of the above
59.
59. PVC conduit is commonly used because it is:
a)
A. Nonmetallic and corrosion-resistant
b)
B. made in philippines
c)
C. Made for high-voltage only
d)
D. None of the above
60.
60. Why is plastic conduit not allowed in high-temperature environments?
a)
A. PVC becomes heavier
b)
B. PVC becomes electrically conductive
c)
C.PVC softens or deforms
d)
D. None of the above
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