PASS YOUR COLORADO ELECTRICIAN LICENSE EXAM!
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IF YOU NEED YOUR COLORADO ELECTRICIAN EXAM, ORDER THIS COURSE!
Our Electrical License study course properly prepares you to pass your Colorado Residential Wireman, Journeyman Wireman, or Master Electrician exam.
WE TEACH YOU TO PASS!
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IF YOU ARE TAKING THE PSI RESIDENTIAL WIREMAN, JOURNEYMAN WIREMAN, OR MASTER ELECTRICIAN EXAM THIS COURSE WILL TEACH YOU HOW TO PASS THE EXAM THE FIRST TIME YOU TEST
How? Because TLC Works! Our programs are among the most successful, comprehensive, and affordable training and exam preparation programs available anywhere.
The key to your success while using our program is a 22-lesson breakdown of our curriculum, designed to maximize your learning & retention potential. If you follow our curriculum, you WILL PASS your exam!
We provide a comprehensive strategy to pass the Colorado electrician exam by teaching you how to “navigate” the 2020 NEC. You will quickly become an expert at finding the answers to exam questions accurately rapidly and accurately.
Why choose TLC? to help pass the Electrician exam? Because your time is too valuable to choose anyone else!
Five Reasons to Enlist TLC to help you pass your Colorado Electrician License Exam.
- TLC has fifteen years of experience educating electricians on how to navigate the code and pass state-required electrician tests. We are experts at helping electricians pass the electrical exam!
- A+ Rated with the BBB. Our Programs Work, we have never received a complaint. Check us out!
- Our eTextbooks and online study center contain over 1200 multiple choice questions taken directly from the 2020 NEC (the basis of the Colorado State test), as well as dozens of timed simulated full-length practice exams.
- We guarantee that YOU WILL PASS YOUR EXAM! If you don’t pass your Colorado Electrician exam after two attempts, We offer a full refund.
- We have a 98% Pass Rate! Our students pass the exam. In fact, out of the 3000+ electricians that have used our study courses, less than 50 failed to pass on the first try.
OUR STUDENTS PASS, we guarantee it! Our students enjoy a 98% pass rate!
Consultants are available at 866-685-8564 – Mon-Fri 7 am to 10 pm PST to answer any of your questions.
Each student receives the following study guides as well as access to online study questions and timed full-length simulated exams.
Basic Electrical Theory – eBook
- AC Current
- Simple AC Current Calculations
- AC Phase
- Phase Rotation
- Single Phase Power Systems
- Three Phase Power Systems
- Three Phase Y and Delta Configurations
- Measurements AC Magnitude
- Power in Resistive and Reactive AC Circuits
- Calculating Power Factor
- Practical Power Factor Correction
- Kirchhoff’s law.
Supplemental Study – eBook
- Ohms Law
- Schematic Reading
- Wire Color Codes
- Electronic Symbols
- Electrical Diagrams
- Digital Multimeters
Navigating the 2020 NEC – eBook
- How to quickly reference the NEC
- Code reference speed drills
- Table of Contents
- Layout and structure of the codebook
- How to use the Index
- TLC System for answering test questions
- Keyword Identification – How to identify the subject of a question
- Example questions broken down for your review
- Practice questions with answers fully mapped out
ONLINE STUDY CENTER
Study Mode | Flash Card Mode | Chapter Tests | Simulated Final Exam
Access Study Questions & Simulated Exams from any device with internet access! Online features include 1200+ practice questions, virtual flashcards, chapter exams, & unlimited mock final exams.
These questions exist to provide a framework for you to practice locating the answers to questions through use of your NEC Codebook. It is this process of constantly utilizing the code to answer practice questions that will build up the speed and code knowledge to successfully pass your electrical exam.
Four Modes of study!
- STUDY MODE This mode covers all Colorado electrical exam questions and answers within our course. (Organized as Question – Answer – Code Location.)
Included in this mode of study are;
- General Trade Knowledge Questions (General electrical questions not in the code)
- Blueprint Reading Questions
- Calculation Questions (Load Calculations, Conduit Fill, etc.)
- 2020 NEC Code Questions
- FLASH CARD MODE: Online Virtual Flashcards provide individual randomized questions. This mode of study presents access to our entire question set and is an ideal setting to practice answering randomized exam questions. (Organized as Question – Answer – Code Location.
- CHAPTER TESTS: Verify your understanding of each section of our structured study questions. (Practice tests provide real-time feedback on each section of our study materials and enable you to concentrate on those sections most needing improvement.
- SIMULATED FINAL EXAM: Final exams simulate the experience of taking your actual electrician exam.
Simulated Finals Are:
- Full length (Exact same number of questions as the Master Electrician exam)
- Timed (Exact same amount of time allowed as the Master Electrician exam)
- Randomized (Questions are assigned randomly; all exams are unique.)
- Properly Balanced (All questions are balanced according to the Candidate Information Bulletin to guarantee a realistic exam simulation)
Take as Many Timed Final Exams as you Want! (Practice exams help you rapidly gain confidence and knowledge to pass your Electrical Exam effortlessly.)
ONE YEAR ONLINE ACCESS: 1-year full access membership to our Online Study Center. Conveniently study in your home or office without wasting valuable time commuting to distant classes.
Our program is a reliable and affordable way to prepare for your Colorado Electrician Exam while at home and online.
THIS PROGRAM REQUIRES YOU TO HAVE A COPY OF THE 2020 (NEC) NATIONAL ELECTRIC CODE. IF YOU DO NOT OWN A COPY OF THE CODEBOOK, YOU SHOULD ACQUIRE ONE IMMEDIATELY
The Colorado Electrician exam is a multiple-choice test. Learning the following testing strategies will help you pass the electrician exam.
SET YOURSELF UP TO PASS THE EXAM.
PREPARE FOR YOUR EXAM IN ADVANCE: It is best to begin preparing long before the day of your exam. Make it a habit of completing your reading assignments and frequently review lecture notes. Also, develop an outline of the main topics and concepts that will be covered during your exam, then use this sheet to study.
These tips will help you memorize the essential facts and other information you must know to pass.
MAKE TIME TO STUDY: Create a study schedule and stick to it. Consistently make time for studying.
Work and other activities can hijack your study time, so be sure to set aside at least 60-120 Min per day so you can adequately study for your exam.
STUDY REGULARLY: consistently study every day during the workweek Monday – Friday. And take your weekends off.
DON’T OVERSTUDY and BURN OUT. Enjoy your weekend.
PAY ATTENTION TO THE TRAINING PROGRAM: Do not concentrate on memorizing the practice questions, Instead focus on looking up the answers in the codebook. The practice questions mean nothing. Being able to find solutions to the problems in the codebook means everything.
When you master the codebook, you master the exam,
USE THE LAST THREE DAYS BEFORE YOUR EXAM FOR A LIGHT REVIEW: Go over your notes, reading assignments, practice exams, and other materials.
DO NOT POWER STUDY the last couple of days before your exam. If you don’t know it now, you might as well reschedule.
THE DAY BEFORE YOUR EXAM
DO NOT POWER STUDY THE NIGHT BEFORE YOUR EXAM: Getting plenty of rest and exercising will enhance your ability to perform well on the California Journeyman Electrician exam.
Make sure you eat a light, nutritious meal before taking your examination to be alert and focused.
GO TO BED EARLY THE NIGHT BEFORE YOUR EXAM: It is unwise to stay up all night studying before a test. Get plenty of sleep the night before your exam.
While spending extra time preparing seems like it will improve your score, don’t power study the night before your exam. You will do worse on the test if you show up for your examination tired or worn out.
THE DAY OF YOUR EXAM
EAT FOR SUCCESS: Eat a nourishing but lite breakfast/lunch. You want to be sharp, focused, and alert for your exam, not tired, bloated, or hungry. Fruits such as blueberries, Healthy Protein such as fish or eggs, Nuts, etc. are all excellent choices.
Eat the food that makes you feel your best and most alert.
ARRIVE AT THE TEST CENTER EARLY: Arrive at the test center at least 15 minutes before the scheduled start of the examination.
Don’t be late. You may not be allowed into the exam center and forfeit your $100 test fee.
TAKE CARE OF YOUR “BUSINESS” BEFORE THE EXAM: Be sure to use the restroom before your exam begins. If you must visit the bathroom during the test, it can waste time and break your concentration. In many cases, you may not be allowed to leave the examination area once your exam begins.
Not being allowed to use the restroom can be extraordinarily uncomfortable and adversely affect your final score.
READ THE DIRECTIONS CAREFULLY
- Each question has only one correct answer.
- Do not leave any questions blank. It is better to guess than not answer. A blank answer is an automatic wrong answer.
TAKE YOUR EXAM IN PASSES
Pass 1) Answer all the easy questions first. Write down the question numbers of more difficult questions. Then rate them from one to three, with one being “I can answer this with a little work” and three beings “I don’t have a clue.”
Pass 2) Read the test a second time and answer more difficult questions. Answer all questions rated as ONE now.
Pass 3) Read the test a third time and answer more difficult questions. Answer all questions you rated as TWO now.
Pass 4) answer the questions rated THREE by utilizing the “identify wrong answer system” listed below.
STRATEGIES FOR ANSWERING DIFFICULT QUESTIONS: WHEN YOU NEED TO GUESS THE ANSWER.
- Eliminate answers you know to be incorrect.
- Give each answer the “true-false test:” This may reduce your selection to the best solution.
- Question answers that grammatically don’t fit with the question.
- Question answers that are unfamiliar to you.
- Question answers that contain negative or absolute words. Try substituting a qualified term for the absolute one. For example, frequently for always; or typical for every to see if you can eliminate an option.
DIFFERENT STRATEGIES FOR DIFFERENT TYPES OF ANSWERS:
- All of the above: If you know two of four options seem correct, “all of the above” is a strong possibility
- Number answers: Ignore the high and low answer and consider the middle range numbers
- Look-alike options: if multiple answers look alike, probably one of them is correct. Choose the best solution but eliminate choices that mean virtually the same thing, and thus cancel each other out.
- Opposite options: If two options are opposite each other, chances are one of them is correct
- You should favor options that contain qualifiers: The result is longer, more inclusive items that better fill the role of the answer.
- If two alternatives seem right, compare them for differences, then refer to the question to find your best solution.
ART OF GUESSING: How to identify WRONG answers while determining the BEST solution:
Always guess instead of leaving the answer blank, there is no penalty.
- Use hints from questions you know to answer questions you do not.
- Change your first answers ONLY when you are sure of the correction, or other cues in the test cue you to change. Remember that you are looking for the best solution, not only a correct one.
Eliminate the wrong answers first – Most exam questions feature one or more responses which are unmistakably wrong:
For example, let’s look at this question:
Question: The ground terminals for a lightning protection system must be bonded to the __________ of the building or structure.
- Foundation rebar
- The frame
- Grounding electrode
- Lightning rod electrode
Start by looking for BAD answers first, look at the question, and compare it to the various responses.
(1). Foundation Rebar: When answering exam questions, you need to pull from your experience in construction. While foundation rebar is a large amount of metal, it is encased in concrete and purposely kept away from direct content with the earth. Disqualify this answer.
(2) The frame? Well, if it is a mobile home, it may have a frame. If so, you certainly are not going to use it to ground. Disqualify this answer.
(3) Grounded electrode system: This answer looks like a winner. when putting it into the exam question, it now reads
The ground terminals for a lightning protection system must be bonded to the grounding electrode system of the building or structure.
This answer is now my hot contender for my best guess!
(4) Lightning Rod Electrode This answer is specific to the question! It hits on a particular keyword in the exam question, lightning protection system. Four also looks like a possible choice for the answer. Which to choose?
CONCLUSION: We have immediately eliminated both (1) and (2), so guessing the correct answer (3) or (4) is now 50/50 instead of having only a 25% chance of getting it right. But which exam answer is the most correct.
ACCURATELY SELECTING THE CORRECT ANSWER:
Let’s look at (3) and (4) to see if we can’t improve our choice to the right answer.
(3) A grounding electrode system in context with the question would be the Grounding Electrode (system) of the building or structure. This answer is the big picture answer. While (4) lightning rod electrode is a specific piece of equipment that may or may not exist. If it does exist, it would be a part of the building’s grounded electrode system.
To help solidify your best guess quickly, look in article 100 definitions. If a lightning rod conductor is a specific piece of equipment, you should find it there.
Article 100 (Grounding Electrode. A conducting object through which a direct connection to earth is established. CMP-5)
Article 100 (Lightning Rod Conductor. Nothing whatsoever
Thus I would choose (3) Grounding Electrode System as it is the best, most complete answer.
The Correct Answer is (3)
TEST SITE POLICY:
The Colorado Electrician exams are open-book examinations. The testing facility will provide specified reference materials.
The Exam – the Colorado Electrician exam is an open book four-choice multiple-choice exam. You will have four choices per question. Some questions may require mathematical computation.
All exam questions are written to provide only one BEST answer and NOT written as trick questions.
All correct answers have the same point value. It is better to try to answer a question. By answering all questions, you have a chance to get them right (and earn points). When you leave a question blank, it’s automatically scored as wrong. (you lose points). Ample time is provided to answer all exam questions, so be sure to read all questions and answers entirely and carefully before selecting the BEST possible solution to the problem.
Frequently Asked Questions
Please check with your State or Local Board for current information. Licensing requirements change, and our site may not have been updated to reflect those changes.
QUESTION: Who is required to have a Colorado Electrician license?
ANSWER: The Colorado State Electrical Board must license any individual who is engaged in the electrical contracting business or is performing work as a Residential Wireman, Journeyman Wireman, or a Master Electrician.
QUESTION: What are the qualifications required for taking the exam?
Requirements are as follows for the following Electrical Licences.
- Must demonstrate 4000 hours of residential-only experience gained in no less than two years.
- Must demonstrate 8000 hours of experience gained in no less than four years. 4000 hours must be commercial/industrial work.
MASTER ELECTRICIAN: (Choose only one)
- Must either; Graduate as an electrical engineer of an accredited college or university AND possess 2,000 hours of construction experience earned in no less than one year, OR Graduate from an electrical trade school or community college AND possess 8,000 hours of experience acquired in no less than four years, OR be a licensed Journeyman Wireman with 2,000 hours of additional experience while licensed earned in no less than one year.
QUESTION: How do I sign up for the exam?
Upon approval from the Board, you will receive a notification letter via mail. You will then be responsible for contacting PSI to pay and schedule for the examination. If you fail, you may retest unlimited during your eligibility period.
The exam is administered by a third-party testing center, PSI Exams. You can contact PSI with any questions at (800) 733-9267 Hours of operation are Monday through Friday between 5:30 am, and 8:00 pm or Saturday-Sunday between 7:00 am and 3:30 pm, Mountain Time.
QUESTION: How long is the exam?
ANSWER: The Residential Wireman exam consists of 90 multiple-choice questions. Test takers have 4:00 hours to complete the exam. The exam is open-book with authorized materials and computer-based.
The exam covers the following subjects:
- General Electrical Knowledge 18
- Service, Feeders, and Branch Circuits 18
- Grounding and Bonding 13
- Overcurrent Protection 5
- Conductors and Cables 9
- Raceways and Boxes 9
- Electrical Devices 8
- Special Equipment 4
- Electrical Calculations 6
ANSWER: The Journeyman Wireman exam consists of 90 multiple-choice questions. Test takers have 4:00 hours to complete the exam. The exam is open-book with authorized materials and computer-based.
The exam covers the following subjects:
- General Electrical Knowledge 11
- Service, Feeders, and Branch Circuits 9
- Grounding and Bonding 14
- Overcurrent Protection 6
- Conductors and Cables 9
- Raceways and Boxes 5
- Motors 6
- Electrical Devices 5
- Special Occupancies 5
- Special Equipment 5
- Transformers 4
- Photovoltaics 2
- Electrical Calculations 9
ANSWER: The Master Electrician exam consists of 100 multiple-choice questions. Test takers have 4 hours to complete the exam. The exam is open-book with authorized materials and computer-based.
The exam covers the following subjects:
- General Electrical Knowledge 6
- Service, Feeders, and Branch Circuits 11
- Grounding and Bonding 14
- Overcurrent Protection 5
- Conductors and Cables 4
- Raceways and Boxes 5
- Motors 8
- Electrical Devices 4
- Special Occupancies 9
- Special Equipment 9
- Transformers 4
- Photovoltaics 2
- Electrical Calculations 9
QUESTION: Why should someone study this course if the journeyman license exam is an open-book test?
ANSWER: The electrical licensing exam is very challenging and usually requires a month or more of preparation to pass.
The 2020 NEC is a large and complex publication containing over 800 pages of code. It is challenging to locate each correct article and answer in the time allowed during the exam without thorough preparation.
Our course is designed to familiarize you with the 2020 NEC. You will know precisely how to find the correct answers in the code when you take your exam.
We prepare you to successfully pass your exam by providing extensive knowledge of the structure of the code and by thoroughly covering each subject appearing on your Colorado Electrical License Exam.
QUESTION: Why is a copy of the 2020 NEC required by this course?
ANSWER: The Colorado Electrical License Exam is based on the 2020 NEC. This course is an excellent study companion to the 2020 NEC. This course makes frequent references to code sections and guides you through the exam topics.
The Electrical Licensing Exam is an open-book code exam. To pass, you must continuously reference the 2020 National Electrical Code.
The testing center will provide the following codebooks.
- The NFPA 70 – National Electrical Code, 2020 Edition.
QUESTION: What can I bring into the testing center?
- Prescription eyeglasses
QUESTION: Where do I go to take my exam?
ANSWER: PSI Services. PSI maintains seven testing locations across Colorado.
For a complete listing, reference pages 3-4 of the Colorado State Electrical Board – Candidate Information Bulletin.
Applicants for the Residential Wireman license must demonstrate a minimum of 4,000 hours of work experience.
Applicants for the Journeyman Electrician license must demonstrate a minimum of 8,000 hours of work experience earned in no less than four years, of which 4,000 hours of work experience must be in commercial or industrial work. Additionally, 288 hours of classroom education is required for applicants currently registered as an apprentice.
Applicants for the Master Electrician license must either; Graduate as an electrical engineer of an accredited college or university AND possess 2,000 hours of construction experience earned in no less than one year. OR Graduate from an electrical trade school or community college AND possess 8,000 hours of experience acquired in no less than four years, OR be a licensed Journeyman with 2,000 hours of additional experience while licensed earned in no less than one year.
Residential Wireman, Journeyman/Master Electrician Applications:
- ONLINE Individual Examination Application.
FOR APPROVAL BY THE STATE OF COLORADO ELECTRICAL BOARD – DEPARTMENT OF REGULATORY AGENCIES
- License Renewal Application.
ACCOUNT ACCESS PORTAL
General Information Links:
- Electrical Licencing – Candidate Information Bulletin:
EXAM SCHEDULING – EXAM CONTENT – TESTING CENTER LOCATIONS
- Electrician Licensee Search Tool:
CHECK ELECTRICIAN CERTIFICATION STATUS
IF YOU ANSWER 20+ PRACTICE QUESTIONS CORRECTLY YOU ARE IN PRETTY GOOD SHAPE. However, if you miss five or more questions you risk failing your Colorado electrician exam.
Of the following output characteristics, which is NOT required to be compatible to the output of a generator or other electric power production source operating in parallel with an electrical supply system?
What is the MINIMUM bending radius for a power and control tray cable with a metallic shielding?
The working space in front of fire or electrical equipment may be used to store
Surface nonmetallic raceways that have limited smoke-producing characteristics shall be
What is the MAXIMUM number of branch circuit conductors permitted in a recognized wiring method between luminaries connected together on a single phase 120/240 volt system?
In what location are disconnecting means NOT required for individual luminaries with fluorescent double ended lamps and ballasts?
The top of a 12 inch deep wall cabinet, installed in a room with electric space heating cables embedded in the ceiling, shall be below the ceiling no less than
Non-heating leads from fixed outdoor electric deicing and snow melting embedded resistance heating panels shall be permitted to be protected by
What is the MAXIMUM ac control voltage to ground for permanent amusement attractions?
The site-isolating device installed at the distribution point for agricultural buildings shall be
A MAXIMUM continuous load on an overcurrent device is limited to 90 percent of the device rating. If the protective device is rated 80A, what is the MAXIMUM continuous load permitted?
How many sets of 5-wire feeders sharing the same common neutral are allowed?
What type of receptacles are permitted on a 40-amp branch circuit with multiple receptacles?
The equipment grounding conductor inside an underground feeder and branch-circuit cable is
Which National Electrical Code article covers telephone, telegraph, outside wiring for fire and burglar alarm systems and similar central station systems?
At what distance from entering the building must the metal sheath of communication cable be grounded or interrupted?
Multiwire branch circuits supply only line to neutral loads EXCEPT where they supply only one utilization equipment or_________
In a dwelling unit garage, GFCI protection of 15 and 20 ampere receptacles are required for_________
Where a counter-mounted cooking unit is mounted in a corner, the space behind the unit is exempt from wall countertop receptacle spacing requirements when the measurement from the back of the unit to the corner of the wall is less than_________
When are conductors required to be protected?
What component permits voltage to be stepped up or down?
Where required, mitigating measures shall be implemented for the period that a system is impaired, only when acceptable to the
After installation, when shall a central station be checked for sensitivity?
What is a Tactile Notification Appliance?
Smoke detectors with control output functions shall be verified that the control capability shall remain operable even if the signaling line circuit is in alarm state or_________
What best describes the purpose of inspection, testing and maintenance of a fire alarm system?
One method of defining circuit integrity cable is by establishing a MINIMUM fire resistance rating of how many hours?
Which of the following methods is acceptable to show the location of the detector and the area protected on a remote alarm indicator?
A circuit that contains both series and parallel elements is known as
What is the permitted location rule for a supplementary visible notification appliance?
In new construction, luminaries installed within 1.5 meters (5 feet) of the edge of the water or over a pool, fountain, or similar body of water must be mounted a vertical distance above the maximum water level of no less than___________
In Class I Division 1 and 2 locations, flexible cords are
Without exceptions, Liquidtight Flexible Metal Conduit (LFMC) shall be securely fastened in place by approved means within how many inches of each box, cabinet, conduit body or other conduit termination?
Electrical metallic tubing is designed to protect and____________
Flexible metallic tubing is considered which of the following?
Electrical nonmetallic tubing is used for the installation of which of the following?
Cord connected luminaries installed in bathtub and shower areas shall NOT have any parts within a zone measured
When installing surface mount or recessed luminaries in a closet, the lamp must be completely___________
After installation, outlet boxes must be provided with a cover unless covered by means of a____________
Where a metal lampholder is connected to a flexible cord, the inlet shall be equipped with an insulated bushing that, if threaded, is NOT smaller than
Which of the following materials can NOT be used for antennas and their lead-in conductors?
Type CATVX cables less than how many inches in diameter are permitted to be installed in multi-family dwellings?
Class 1, Class 2 and Class 3 circuits should be identified at terminal and junction boxes because
Secondary protectors on circuits exposed to accidental contact with electrical light or power conductors operating at greater than 300 volts to ground are__________
Driven telecommunication primary protector ground rods to supplement intersystem ground connections should be separated from electrodes of other systems by at LEAST
Where a roof has a slope of NOT less than 100 mm (4 inches) in 300 mm (12 inches) above roof clearance of a communication cable of NOT less than what distance shall be permitted?
Class 1 circuit conductors in sizes of 18 American Wire Gauge and 16 American Wire Gauge should be installed as any type EXCEPT
For Radio and Television distribution equipment, a bonding device intended to provide a termination point for the grounding conductor should comply with all of the following conditions EXCEPT
All inside conductors associated with the interior installation of transmitting stations should be separated from conductors of any electric light, power or signaling circuits by at least___________
Where the MAXIMUM span between supports is more than 35 feet, all of the following materials are approved for use as antenna and lead-in conductors for receiving equipment EXCEPT
What is the purpose of the NEC (National Electrical Code), with regard to the hazards arising from the use of electricity, with regard to persons or property?
Where does this code not cover the installation of optical fiber cables and raceways, or conductors, equipment and raceways for electrical, signaling, and communications?
Because limiting the number of circuits on a single enclosure minimizes the effects from a ground fault or short circuit in one circuit, the NEC provides that the number or circuits and wires in a single enclosure be:
Conductors, based on the ______ °C temperature rating and ampacity as given in Table 310.60(C)(67) through Table 310.60(C)(86), may be terminated unless otherwise identified.
For equipment rated 1200 amperes or more and over 6 feet wide that contain overcurrent devices, there shall be one entrance to and egress from the required working space not less than ________ inches wide and ________ feet high at each end of the working space.
Unless they are under __________________, the entrance to any buildings, enclosures, rooms, or vaults with exposed conductors or live parts operating at over 600 volts nominal must be kept locked.
Access and ______ space shall be provided and maintained about all electric equipment to permit ready and safe operation and maintenance of such equipment.
In front of electric equipment, the working space width must be at least ______ in., or the width of the equipment, whichever is greater. Also, the working space must have space for doors or hinged panels to open ______ degrees or more.
A large single panel, frame, or assembly of panels on which are mounted on the face, back, or both, switches, overcurrent and other protective devices, buses, and usually instruments.
When an installation in concrete slabs or masonry or underground, in direct contact with the earth, is in a location that can be saturated with water or other liquids (vehicle washing areas, for example), or is exposed to weather in an unprotected location, that is known as a:
A system or circuit conductor that is intentionally grounded.
What is the definition of Continuous Duty?
For fixed outdoor electric deicing equipment, the ampacity of branch-circuit conductors and the rating or setting of overcurrent protective devices supplying the equipment shall be a minimum of ______ of the full-load current
For a one-family dwelling with a 200 ampere, 120/240-volt, single-phase main service panel, supplied with size 2/0 AWG THW copper ungrounded service-entrance conductors in rigid metal conduit (RMC), what is the minimum allowed size of bonding jumper for the service-entrance conduit?
When a metal well casing is used with a submersible pump, the pump equipment grounding conductor must be ____________ the well casing.
For a 5-hp, 3-phase, 208-volt motor with 20-ampere rated overload protection and branch-circuit, short-circuit and ground fault protection rated at 30 amperes, what is the minimum required size of grounding conductor?
How many times may a grounding electrode conductor be spliced, using a listed split-bolt connector?
What is the minimum size underground installed service-lateral conductors allowed by the NEC, aside from any exceptions?
When overhead spans of open conductors and open multiconductor cables pass over a roof, the vertical clearance must be at least ______ ft. above the surface. This clearance must be maintained for at least ______ ft. in all directions from the edge of the roof. Exceptions ignored.
For the servicing of air-conditioning, heating and refrigeration equipment, a 125-volt, single-phase, 15- or 20-ampere-rated receptacle outlet must be installed within ______ of the equipment, at an accessible location.
Other than for supplying ____________ outlets or extension to the area below the floor but not above it, Cellular Concrete Floor Raceways may not be used in commercial garages.
If a raceway containing power-limited, remote-control, and signaling circuits is where condensation is known to be a problem and is subjected to different temperatures, it is required for the raceway to be filled with a material to prevent the circulation of warm air to a colder section of the raceway, that is approved by the authority having jurisdiction. Explosion-Proof seals:
For supplying a fixed electric space heating unit with heating elements having a full-load current rating of 125 amperes and a blower motor with a full-load current rating of 2.5 amperes, what is the minimum size 75° C rated copper conductors required?
Where shall liquidtight flexible metallic conduit (LFMC) not be used?
What is the maximum distance between supports for standard trade size 2 in. right Schedule 40 polyvinyl chloride conduit (PVC)?
When RMC threadless connectors and couplings are used with conduit, they must be made tight, and when they are to be buried in concrete or masonry, they must be:
The maximum percent of FMC conduit interior total area the may be filled if more than 2 conductors are used in the tube is:
The tightest bend allowed by the NEC for Type NM cable is a radius of how many times the diameter of the cable?
A factory assembly of one or more insulated conductors with an integral or overall covering of nonmetallic material suitable for direct burial in the earth.
For an individual branch circuit in a flat conductor cable assembly, what is the maximum ampacity?
If a pole is over 8 ft. in height, a ____________ terminal must be accessible from a handhole.
What is required for a control transformer when a 240-volt wye-connected motor gets power from a converted single-phase source, and it is intended to connect a 120/240-volt transformer to control the motor on the load side of the converter?
What is the full-load running current rating of a 208-volt, 3-phase, 50 hp, squirrel-cage, continuous-duty, AC motor?
For a branch-circuit where lighting outlets or general-use receptacles are also supplied, what is the maximum percentage of the rating that may not be exceeded by a cord-and-attachment-plug connected room air-conditioner?
Of the following, which is not a requirement for marking on a transformer’s nameplate?
Which of the following is a requirement for electrically heated floors in bathrooms, kitchens, and in hydromassage bathtub locations?
Lighting systems for fountains, pools, spas, and similar locations must be installed __________ or more horizontally from the nearest water’s edge, unless Article 680 permits otherwise.
On portable generators manufactured before ____________, listed cord sets or adapters incorporating listed GFCI protection are allowed to be used to meet the GFCI requirement.
Temporary electric power and lighting installations for holiday decorative lighting and similar purposes is allowed for a maximum of:
Where the available short-circuit current for the battery bank on a PV system exceeds the interrupting or ____________ ratings of the equipment it supplies, a listed current-limiting overcurrent device must be installed.
Tap conductors on a common dc grounding electrode conductor of a PV system must be sized in compliance with 250.166. The connection between the common grounding electrode and the tap conductor must be such that the common grounding electrode conductor is:___________
Power-limited fire alarm cable must have a moisture-impervious metal sheath or be listed for the purpose if they are used in what kind of location?
What must be done with approved ratings, to maintain the fire-resistance rating, to openings around penetrations of raceways for communications and optical fiber cables through fire-resistant-rated ceilings, floors, partitions, and walls?
When are Class 1 circuit conductor and power-supply conductors are allowed to be in the same cable, enclosure, or raceway?
It is not required to list or mark community antenna television and radio system coaxial cables if the cable is not more than ______ from where the cable enters the building from the outside to where it is terminated at a grounding block.
During lightning events, limiting the length of the primary protector grounding conductors for communications circuits assists in reducing voltage between the buildings communications systems and:___________
What type of protection is needed for the grounding electrode conductor for an antenna if it is subject to physical damage?
What is the maximum cross-sectional value that conduit nipples under 24 inches long may be filled?
If more than 2 conductors are used in a tube of EMT conduit, total interior area that can be filled is no more than ________ percent.
Given the following information, what is the maximum approximate distance a single-phase, 240-volt, 42 ampere load can be located from a panelboard? * copper conductors – K = 12.9 * size 8 AWG THWN/THHN conductors are used * Limit voltage drop to 3%