Docsity
Log inSign up
Docsity
Prepare for your exams
Prepare for your exams

Study with the several resources on Docsity

Earn points to download
Earn points to download

Earn points by helping other students or get them with a premium plan

Guidelines and tips
Guidelines and tips
Sell on Docsity
Sell on Docsity
Log inSign up

Prepare for your exams

Study with the several resources on Docsity

Find documents

Prepare for your exams with the study notes shared by other students like you on Docsity

Search Store documents

The best documents sold by students who completed their studies

Search through all study resources
Docsity AINEW

Summarize your documents, ask them questions, convert them into quizzes and concept maps

Explore questions

Clear up your doubts by reading the answers to questions asked by your fellow students

Earn points to download

Earn points by helping other students or get them with a premium plan

Share documents
download point icon20 Points

For each uploaded document

Answer questions
download point icon5 Points

For each given answer (max 1 per day)

All the ways to get free points
Get points immediately

Choose a premium plan with all the points you need

Study Opportunities

Choose your next study program

Get in touch with the best universities in the world. Search through thousands of universities and official partners

Community

Ask the community

Ask the community for help and clear up your study doubts

University Rankings

Discover the best universities in your country according to Docsity users

Free resources

Our save-the-student-ebooks!

Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors

From our blog

Exams and Study
Go to the blog

Electrical Exam Prep: 190+ Q&As on Wiring and Installation, Exams of Electrical Engineering

San Diego City CollegeElectrical Engineering

A comprehensive set of questions and answers related to electrical installations, wiring, and code compliance, designed to help students and professionals prepare for electrical exams. It covers topics such as conduit takeoffs, raceways, wiring, fittings, permits, and electrical drawings. The material also addresses safety standards, grounding techniques, and testing procedures, offering practical insights into real-world electrical systems. This resource is valuable for anyone seeking to deepen their understanding of electrical engineering principles and practices, ensuring they are well-prepared for certification and professional work. It is a useful study guide for electrical engineering students and professionals preparing for certification exams, offering a structured approach to mastering key concepts and regulations in the field. The document emphasizes practical knowledge and application, making it an excellent resource for both academic and professional development.

Typology: Exams

2024/2025

Available from 05/31/2025

purity-kauri
purity-kauri 🇺🇸

1.1K documents

1 / 20

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1
2025-2026 C-10 ELECTRICAL PART 1 EXAM/ACTUAL
190Qs&As|100% VERIFIED|GRADED A+
1. Takeoffs of conduit are categorized into . - ANS:->> Power distribution,
branch lighting, and branch power
2. Raceways are taken off per . Fittings required to make turns and extensions are
taking off per
. - ANS:->> Linear foot, each
3. All wires and conductors are taken off per . - ANS:->> Linear foot
4. All fittings, devices and boxes are taken off per . - ANS:->> Each Item
5. Permits and fees for tie-ins may be listed at lump sum and are taken off
per . -
ANS:->> Occurrence,Project, and Contract
6. Control stations are taken off by . - ANS:->> Individual Unit and Each Item.
7. Panelboards are taken off individually according to . - ANS:->> Type, Size,
and Voltage
8. Starters, safety switches and fuses are taken off per . - ANS:->> Each Item
9. should be kept separate from general light fixtures. - ANS:->> Exit
Lighting
10. Interior and exterior lighting should be taken off and listed . - ANS:->>
Separately
11. Lamps for light fixtures are . - ANS:->> Taken off per each Item
pf3
pf4
pf5
pf8
pf9
pfa
pfd
pfe
pff
pf12
pf13
pf14

Partial preview of the text

Download Electrical Exam Prep: 190+ Q&As on Wiring and Installation and more Exams Electrical Engineering in PDF only on Docsity!

2025 - 2026 C-10 ELECTRICAL PART 1 EXAM/ACTUAL

190Qs&As|100% VERIFIED|GRADED A+

  1. Takeoffs of conduit are categorized into. - ANS:->> Power distribution, branch lighting, and branch power
  2. Raceways are taken off per. Fittings required to make turns and extensions are taking off per . - ANS:->> Linear foot, each
  3. All wires and conductors are taken off per. - ANS:->> Linear foot 4. All fittings, devices and boxes are taken off per. - ANS:->> Each Item 5. Permits and fees for tie-ins may be listed at lump sum and are taken off per. - ANS:->> Occurrence,Project, and Contract 6. Control stations are taken off by. - ANS:->> Individual Unit and Each Item. 7. Panelboards are taken off individually according to. - ANS:->> Type, Size, and Voltage 8. Starters, safety switches and fuses are taken off per. - ANS:->> Each Item 9. should be kept separate from general light fixtures. - ANS:->> Exit Lighting
  4. Interior and exterior lighting should be taken off and listed. - ANS:->> S eparately
  5. Lamps for light fixtures are. - ANS:->> Taken off per each Item
  1. Light fixtures should be listed in the takeoff according to. - ANS:->> Color
  2. Working electrical drawings numbered sequentially, prefaced by the letter "E", include.
  • ANS:->> Telecommunications and security systems only
  1. The shows power requirements of the structure. – ANS:->> Power plan
  2. The aids the electrical contractor sizing the panel.
    • ANS:->> Panel Schedule
  3. The plan is supplemented by the fixture schedule.
    • ANS:->> Lighting
  4. The fixture schedule lists lamp.
    • ANS:->> Wattage
  5. Electrical specifications provide.
    • ANS:->> The grade of materials to be used, Materials installation specifics, and how materials will be used in the finished system
  6. must be maintained by the electrical contractor for all installed work. – ANS:->> As-built drawings
  7. No conductors are smaller than No. wire.
    • ANS:->> 12
  8. Shall be installed in service entrances and panel feeders.
    • ANS:->> Rigid conduit
  9. The electrical contractor is responsible for providing and installing for a complete telephone system. –

minimum of inches. - ANS:->>.

  1. Black and red wires are called.
    • ANS:->> Hot wires
  2. is also known as green wire
    • ANS:->> Bare wire, ground wire,
  3. as it pertains to equipment, means to make it so the equipment is not sealed by locked doors
  • ANS:->> Accessible
  1. A system is when it is connected to a voltage source under electrical pressure.
  • ANS:->> Energized
  1. load occurs when the voltage and current do not entirely work together.
  • ANS:->> A nonlinear
  1. is excessive amperage which may cause a ground fault.
    • ANS:->> Overcurrent
  2. According to the NEC, if a disconnect is visible within 50 ft., it.
    • ANS:->> Is in sight
  3. Force is expressed in terms of ANS:->> Volts
  4. measure resistance.
    • ANS:->> Ohms
  5. Interrupting rating is the maximum current at which a device will interrupt

at its rated.

  • ANS:->> Voltage
  1. Voltages into 120 and 208.
    • ANS:->> Standard
  2. Ampacity is expressed in.
    • ANS:->> Amperes
  3. When a conductor is connected to the earth, it is considered.
    • ANS:->> Grounded
  4. The connects the neutral of the system to a grounding electrode. - ANS:->> Grounding conductor
  5. The maximum current in a should last for three hours or more. - ANS:->> Continuous load
  6. The NEC requires of certain equipment to ensure electrical continuity. - ANS:->> Bonding
  7. A device intended to protect the motor from overheating is a. - ANS:->> Thermal protector
  8. is the act of connecting something to the ground so it has zero electrical potential. - ANS:->> Grounding
  9. Types of grounding in houses include. - ANS:->> Equipment grounding system
  10. The neutral wire carries current on a continuous basis as part of the normal circuit. - ANS:->> White
  11. The primary function of the wire is to normally be at rest, ready, in case of emergency, to carry electricity to the neutral service at the service box. - ANS:-
  1. If the ampacity of a no. 10 wire is 30 amp, the minimum size wire for a 30 - amp service is.
  • ANS:->> No. 8
  1. The demand factor applied to that portion of an unbalanced neutral feeder load in excess of 200 amps is %. - ANS:->> 70
  2. The code required for lighting load for a school is watts per sq. ft. - ANS:->> 3
  3. as applied to motor-compressors, is defined as the current resulting when a motor- compressor is operated at rated load, rated voltage and rated frequency of the equipment it serves. - ANS:->> Rated load current
  4. Frequent may occur if a house served by a 120/240-volt service has the hot wires of the branch circuits unevenly divided. - ANS:->> Tripping of breakers
  5. The minimum number of conductors required for combined power and lighting in a star of wye 3 - phase system is. - ANS:->> 4
  6. has turns common to both the primary and secondary. - ANS:->> An autotransformer
  7. A combined light and power wiring system. - ANS:->> Simplifies a large wiring job
  1. Direct-current iron-core transformers are not used in combination light and power systems because they. - ANS:->> Don't exist
  2. The resistance for aluminum wire has a higher factor than the same size copper wire. - ANS:->> 1.
  3. In a 3 - phase, 4 - wire delta system , the neutral conductor. - ANS:->> Must be smaller than the phase conductors
  4. Lighting conductors must be kept ft. From communication conductors on the same building.
  • ANS:->> 6
  1. In residential wiring, 3 - phase 4 wire systems are used for. - ANS:->> Water heaters and lighting, 240Y/120 volts and lighting and large appliances
  2. A test ensures the equipment grounding conductor is electrically continuous. - ANS:->> Continuity
  3. tests are used when wiring a mobile home. - ANS:->> continuity, polarity and operation
  4. GFI's can be tested within the scope of a home inspection by. - ANS:-

Using the test button on the receptacle, using the test button on a plug-in circuit tester or using a test button on the outlet.

  1. Field testing outdoor illumination and electrical systems is performed on all electrical circuits with nominal operating voltage between volts and volts. - ANS:->> 115,
  2. Short-circuit and open-circuit tests are performed to determine the parameters of a.
  • ANS:->> Transformer
  1. The ampacity of a service is essentially the. - ANS:->> Service size
  2. is a popular brand name fire-retardant and moisture resistant cable, used in protected areas. - ANS:->> Romex
  3. Without doing load calculations, it is generally safe to say that a mid-sized or average-sized house requires a - amp service. - ANS:->> 100
    • amp services are common in some areas on small houses with electric heat or large houses without electric heat. - ANS:->> 125
  5. The largest single-phase service available for residences is - amp. - ANS:->> 400
  6. Three-conductor-plus-ground cables are generally used for appliances. - ANS:-

    240v

    • gauge wire is used for some electric baseboard heaters, dishwashers and garbage disposals. - ANS:->> 12
    • gauge wire is used for air conditioners, clothes dryers and some electric water heaters. - ANS:->> 10
    • gauge wire is required for stoves. - ANS:->> 8
  10. Electric heaters, washing machines and central vacuums are generally on dedicated circuits . - ANS:->> Because they use so much electricity
  11. No more than outlets and light should be on a single branch circuit. - ANS:->> 12
  12. Cables should be where they come into the panel. - ANS:->> Clamped
  1. should be stripped of wires inside the panel. - ANS:->> Sheathing
  2. Metallic shielding on shielded cable must be stripped back in. at all terminations. - ANS:->> A minimum of 6
  3. Adequate should be left to allow wires to run around bus bars and not over or across them. - ANS:->> Slack
  4. A simple basic house Load calculation includes estimating the. - ANS:-

House square footage, large appliances and special loads

  1. Basic load is calculated by adding 75% of the basement floor area to. - ANS:->> the total house SF.
  2. The large appliances part of the House Load formula includes such appliances as. - ANS:->> stoves
  3. Prior to adding any Special Loads to the calculation to obtain the Total House Load, the basic load and large appliances totals are. - ANS:->> subtotaled
  4. Special Loads current load additions are obtained. - ANS:->> from amps taken from the manufacturer's label
  5. Lighting loads are based on 3 , which includes all small appliances receptacles. - ANS:->> watts per sq. ft.
  6. Fault currents above amp are not likely to occur on 120/240-volt single- phase systems. - ANS:->> 10,
  7. According to the American Wire Gauge (AWG) system, as wires get bigger, their numbers.
  • ANS:->> get smaller
  1. In single-family homes where non-metallic sheathed cable is used are permitted for use where it passes through the studs. - ANS:->> special grommets
  2. Exposed wires should not be attached to the underside of joists in. - ANS:->> crawlspace ceilings
  3. In some jurisdictions, wire may be run on top of joists in attics if there is . - ANS:->> less than 40 in. of headroom
  1. When an entire system won't light, the problem is a poor connection at the junction box or receptacle if it is found that. - ANS:->> both 12 - volt and 120 - volt fuses, breakers and leads are still good.
  2. An overload transformer will cause. - ANS:->> breaker trips after several minutes of operation
  3. Voltage drops at the end of run, caused by overly long wire runs, will result in. - ANS:->> lights dimming
  4. A bad switch or connection to power may result in the. - ANS:->> entire system not lighting
  5. A bad lamp, or faulty lamp-socket contact, may cause. - ANS:->> the system not to light
  6. may cause a circuit breaker to trip or simulate a blown fuse. - ANS:->> A loose fuse
  7. A blown fuse or circuit breaker may result in the. - ANS:->> entire system not lighting
  8. Symptoms of an overload include the. - ANS:->> appearance of a blown fuse, fuse blowing after several minutes of operation and/or breaker tripping after several minutes of operation
  9. If the GFI trips, it may be due to. - ANS:->> improper wiring, a ground fault and/or a faulty GFI
  10. Concealed knob-and-tube conductors should be supported at a maximum of ft. - ANS:->> 4.

" before the unit is tested. - ANS:->> on

  1. is used when the exact current flow in a given conductor needs to be known. - ANS:->> An amp clamp
  2. Test meters that measure DC current can be converted into ones that can measure AC current, by . - ANS:->> adding one of several rectifiers into the meter circuit
  3. Voltmeters are. - ANS:->> always placed in parallel, used to measure EMF and used to measure potential difference
  4. is used to measure difference in potential, or the voltage across two points, of the circuit. - ANS:->> A voltmeter
  5. The measures the current flow in an electric circuit. - ANS:->> ammeter
  6. Circuit resistance is measured by. - ANS:->> an ohmmeter
  7. As long as the amperage and voltage are known, circuit resistance can be determined using . - ANS:->> Ohm's Law
  8. A multimeter is also known as. - ANS:->> a volt-ohm meter / VOM
  9. measures the amount of electrical energy use. - ANS:->> A wattmeter
  10. Very small amounts of current are detected and measured with. - ANS:->> a galvanometer
  11. The most commonly used instrument for measuring electrical circuit quantities is the.
  • ANS:->> multimeter
  1. When operating any electrical meter, it is important the electrician remembers. - ANS:->> to place the meter terminal properly in the circuit to be tested, to observe the direct current polarity, and not to exceed maximum current or voltage.
  2. Code requirements are. - ANS:->> not retroactive
  3. The code prohibits wire sizes. - ANS:->> mixing
  4. The code requires wires through a 2 - hour firewall be. - ANS:->> in metal conduit
  5. Allowable load current will be derated to 80% of normal capacity when there are wires in a raceway or cable. - ANS:->> 4 - 6
  6. Allowable load current will be derated to 50% of normal capacity when there are wires in a raceway or cable. - ANS:->> over 42
  7. Exceptions to applying derating criteria for the allowable loaded current include. - ANS:->> signal conductors
  8. Service drops over residential property and driveways, 300 Volts or less to ground, must have a minimum clearance of ft. - ANS:->> 12
  9. Service equipment for branch-circuits, consisting of service disconnecting means, circuit breakers and fuses on pull-out blocks, must be located. - ANS:-

near the point where the wires enter the building

  1. A service drop must maintain a ft. clearance above a sidewalk. - ANS:->> 10
  2. Although do not need to be counted for derating purposes, they must
  1. Conduit is similar to rigid metal conduit, but is lighter weight, easier-to-use and thin- walled. - ANS:->> EMT
  2. conduit is commonly used in the final connection to AC equipment installed outdoors exposed to the weather. - ANS:->> Liquidtight flexible metal
  3. Conduits are supported every ft. Along the building wall. - ANS:->> 6
  4. Conduit of any size must be supported within ft. of each box, fitting or cabinet.
- ANS:->> 3
  1. Intermediate metal conduit must be supported at ft. intervals. - ANS:->> 10
  2. When putting wires through long runs of conduit, or through conduit containing bends, a is used. - ANS:->> fish tape
  3. is used to lubricate wires to make putting them through conduit easier. - ANS:->> Powdered soapstone / UL Listed paste / Liquid lubricant
  4. Although approximately 10 in. of wire is required to make a connection to a switch or receptacle, a minimum of in. of wire must be pulled and must project at each outlet in accordance with the code. - ANS:->> 6
  5. If wire is run through a box without a connection or splice in that box, is needed in that box. - ANS:->> no slack / a folded slack loop
  6. Wire should be buried a minimum of inches unless they are under a driveway or parking area. - ANS:->> 24
  1. Wires under parking lots and driveways must be buried a minimum of inches.
- ANS:->> 36
  1. Underground may lead directly into the house to the main disconnect. - ANS:->> service laterals
  2. Cable may be buried directly or. - ANS:->> buried in conduit
  3. Disabled access regulations originate from the. - ANS:->> California building code (Title 24), Parts 2, 3, and 5