Statewide License

2023 NEC + RI Amendments

Certificate A Contractor

70% Passing Average

Rhode Island licensing shortcut to remember: Certificate B is the Journeyperson Electrician license. Certificate A is the electrical contractor credential and the master-level business path. To qualify for the Certificate A contractor exam, Rhode Island requires at least 12,000 hours of trade experience plus a Rhode Island Certificate B held for at least two years.

What Is Rhode Island Master Electrician Contractor Exam Prep?

Rhode Island Master Electrician Contractor Exam Prep is advanced preparation for experienced electricians moving from journey-level electrical work into the state's electrical contracting classification.

The official contractor credential is Electrical Contractor A, Certificate A. It is the Rhode Island license that authorizes a qualified holder to conduct business as an electrical contractor under state law.

Rhode Island is different from states that leave master electrician licensing to cities and counties. Electrical licensing is statewide through the Department of Labor and Training and the Board of Examiners of Electricians.

The technical foundation is also clear. Rhode Island electrical examinations are based on the National Electrical Code edition adopted by the Rhode Island State Building Code Standards Committee at the time of the examination. The active Rhode Island Electrical Code currently adopts the 2023 NEC with state amendments.

Official master-level contractor credential: Electrical Contractor A, Certificate A.

Regulator: Rhode Island Department of Labor and Training, Division of Professional Regulation.

Board: Board of Examiners of Electricians.

Experience: at least 12,000 hours, or 6 years.

Journey-level prerequisite: valid Rhode Island Certificate B for at least 2 years.

Passing average: at least 70%.

Current Rhode Island Electrical Code: 2023 NEC with Rhode Island amendments.

For structured master-level preparation, review the 2026 Rhode Island Master Electrician Study Guide + National Electrical Code Combo with Tabs. The package uses the 2026 NEC for current-code study, so candidates should still use the exact state-approved NEC edition required for their Rhode Island examination.

Rhode Island Electrical License Structure

Rhode Island uses statewide electrical licensing with different certificate classifications for contractor, journeyperson, and specialty work.

License / Certificate Primary Role What It Means
Electrical Contractor A Master-level electrical contracting Authorizes the qualified holder to conduct business as an electrical contractor under Rhode Island law
Electrical Corporation AC Corporate electrical contracting structure Used when a qualifying Class A holder is connected to the electrical corporation under state rules
Journeyperson Electrician B Journey-level electrical work Required journey-level credential and a prerequisite for the Class A contractor exam path
Fire Alarm Contractor AF Fire alarm contracting Separate specialty contractor classification
Electrical Sign Contractor SCF Electrical sign contracting Separate specialty contractor classification for electrical sign work
Lightning Protection Contractor LPC Lightning protection contracting Separate contractor category regulated by Rhode Island

Research Authority and Verification

Rhode Island DLT application instructions, electrician regulations, the active Rhode Island Electrical Code, Rhode Island General Laws, and current 1 Exam Prep Rhode Island Master Electrician materials were reviewed for this page.

Verified Point Authority Current Result
State licensing Rhode Island DLT Professional Regulation DLT manages licensing, testing, registration, and discipline for electrician license categories
Master-level contractor credential R.I. Gen. Laws § 5-6-8 Electrical Contractor license is Certificate A
Certificate A eligibility Board of Examiners of Electricians rules and DLT application 12,000 hours / 6 years experience plus Rhode Island Certificate B held for at least 2 years
Passing score Board of Examiners of Electricians rules At least 70% average is required to obtain a license
Current state electrical code Rhode Island Building Code Commission 2023 NEC with Rhode Island amendments, effective December 1, 2025
Renewal R.I. Gen. Laws § 5-6-20 Licenses expire on the qualifying individual's birthday and renew for a 2-year period
Continuing education R.I. Gen. Laws § 5-6-20.1 Class A and Class B electricians must complete at least 15 clock hours of approved continuing education for renewal

Rhode Island Master Electrician Exam Prep Breakdown

Rhode Island does not publish a simple public percentage chart for the Certificate A examination in the materials reviewed for this page. That means your preparation should be broad and should follow the state's stated foundation: the current state-approved National Electrical Code plus general trade knowledge.

At the master and contractor level, focus on electrical theory, services, feeders, branch circuits, conductor ampacity, grounding and bonding, overcurrent protection, wiring methods, raceways, boxes, equipment for general use, motors, transformers, special occupancies, special equipment, special conditions, communication systems, plans, specifications, safety, and electrical calculations.

You should also study Rhode Island-specific responsibilities. The contractor exam path is not only about recognizing NEC rules. It is tied to supervision, licensing, contracting authority, state amendments, and the legal differences between Certificate A and Certificate B.

Field experience gives you the instincts. Exam prep gives those instincts labels, code sections, formulas, and a clock. The clock is usually the least sentimental member of the crew.

Primary SEO Target Rhode Island Master Electrician Contractor Exam Prep
Official Contractor Classification Electrical Contractor A, Certificate A
Licensing Authority Rhode Island Department of Labor and Training, Division of Professional Regulation
Board Board of Examiners of Electricians
Required Experience At least 12,000 hours / 6 years
Journeyperson Prerequisite Rhode Island Certificate B valid for at least 2 years
Passing Average 70%
Current State Electrical Code 2023 National Electrical Code with Rhode Island amendments
State Code Effective December 1, 2025
Application Fee $75 for Electrical Contractor A in the current DLT application
2-Year License Fee $240 for Electrical Contractor A in the current DLT application
Renewal Period 2 years, tied to the qualifying individual's birthday
Continuing Education 15 clock hours for Class A and Class B renewal
Exam References Current state-approved NEC and general trade knowledge; use books only as specifically permitted by the Board

How to Study for the Rhode Island Master Electrician Contractor Exam

Study to the state-adopted code first. Rhode Island electrical examinations are based on the NEC edition adopted by the State Building Code Standards Committee at the time of the exam. As of 2026, the active Rhode Island Electrical Code is based on the 2023 NEC with state amendments.

Step 1: confirm that your Rhode Island Certificate B has been valid for at least two years.

Step 2: organize documentation showing at least 12,000 hours or six years of electrical trade experience.

Step 3: study the 2023 NEC and Rhode Island amendments as the current state-code foundation.

Step 4: build strong recall in general trade knowledge, electrical theory, formulas, licensing rules, and common installation requirements.

Step 5: use timed practice exams and calculations drills so your first serious timed session is not the actual licensing exam.

The 2026 Rhode Island Master Electrician + Electrician Calculations + NEC Combo is useful for strengthening the math and code-navigation side of preparation. Because that product is based on the 2026 NEC, use it for current-code study while keeping your final exam review anchored to the Rhode Island code edition actually used by DLT.

Master-Level Electrical Calculations and Code Strategy

Master-level electrical testing rewards a repeatable calculation process. Identify the system, list the known values, select the correct NEC rule or table, solve the math carefully, and then verify the result against the installation condition in the question.

NEC LOADS GROUND MOTORS services • feeders • conductors • grounding • motors • calculations

Rhode Island Master Electrician contractor exam-prep illustration for NEC application, service calculations, feeder sizing, grounding, motors, transformers, and advanced trade math.

  • Electrical Theory: Ohm's law, power formulas, AC theory, single-phase and three-phase relationships, and basic circuit behavior
  • Services: load calculations, service conductors, disconnects, service equipment, grounding, bonding, and available fault-current concepts
  • Feeders: calculated loads, demand factors, conductor ampacity, neutrals, equipment grounding conductors, and overcurrent protection
  • Conductors: ampacity, adjustment factors, correction factors, terminal ratings, parallel conductors, and voltage drop
  • Motors and Transformers: full-load current, conductor sizing, overload protection, short-circuit protection, feeder rules, primary and secondary calculations
  • Boxes and Raceways: box fill, raceway fill, pull-box sizing, conductor quantities, supports, and wiring-method rules
  • Grounding and Bonding: grounding electrodes, bonding jumpers, separately derived systems, equipment grounding conductors, and service bonding

Your Rhode Island Master Electrician Contractor Roadmap

The Rhode Island contractor path builds directly on journey-level licensing and documented trade experience.

1

Complete apprenticeship and journey-level requirements

Build the training and experience needed to qualify for the Rhode Island Journeyperson Electrician, Certificate B, license.

2

Hold Rhode Island Certificate B

Maintain a valid Rhode Island Journeyperson Electrician license. The contractor path requires Certificate B to be valid for at least two years before applying for the Class A exam.

3

Reach 12,000 hours of experience

Rhode Island requires at least 12,000 hours, or six years, of trade experience for the Electrical Contractor A examination.

4

Submit the DLT application

Provide the current application, experience verification, Rhode Island license information, required supporting documents, and the nonrefundable application fee.

5

Study the state-adopted electrical code

Build strong knowledge of the 2023 NEC with Rhode Island amendments, general trade knowledge, calculations, and contractor responsibilities.

6

Pass the contractor examination

Rhode Island rules require an average of at least 70 percent to obtain the license.

7

Pay the license fee and activate Certificate A

The current DLT application lists a two-year Electrical Contractor A license fee after a passing result.

8

Maintain contractor compliance

Renew on the Rhode Island schedule, complete the required 15 hours of continuing education, follow electrical-code updates, and maintain any firm or corporation certificate required for the way you conduct business.

Suggested Rhode Island Master Electrician Study Emphasis

Rhode Island's public DLT materials reviewed for this page do not publish an official topic-weight percentage chart for Certificate A. The percentages below are a suggested study-time allocation, not an official state exam blueprint.

Wiring Methods, Raceways, Boxes and Materials18%
Services, Feeders and Branch Circuits18%
Grounding and Bonding14%
Conductors and Overcurrent Protection12%
Motors, Transformers and Controls12%
General Knowledge, Theory and Plans10%
Special Occupancies, Equipment and Conditions8%
Electrical Calculations5%
Rhode Island Laws, Rules and Amendments3%

Study-allocation note: these percentages are a planning tool created for this guide. They are not official Rhode Island exam weights. Use current DLT examination instructions as the controlling source.

Rhode Island Master Electrician Exam References

Rhode Island DLT recommends the current National Electrical Code in the latest state-approved edition plus general trade knowledge. The active Rhode Island Electrical Code currently adopts the 2023 NEC with state amendments.

Reference Primary Study Use Important Note
2023 National Electrical Code Current Rhode Island electrical-code foundation Active Rhode Island rule adopts NEC 2023 with state amendments
Rhode Island Electrical Code Amendments State-specific changes to NEC application Study the Rhode Island amendments together with NEC 2023
Rhode Island Electrician Rules License categories, exam procedures, contractor qualification, corporate certificates, and continuing education Certificate A applicants must meet Rhode Island's experience and Certificate B requirements
R.I. Gen. Laws Chapter 5-6 Electrical contractor authority, journeyperson rules, fees, renewal, and continuing education Certificate A authorizes conducting electrical contracting business but does not by itself authorize the holder individually to perform installation work
2026 NEC Study Materials Current-code study, updated calculations, code-navigation practice, and long-term knowledge Current 1 Exam Prep Rhode Island products use the 2026 NEC, which is newer than Rhode Island's currently adopted 2023 NEC

Rhode Island Exam Reference Rules: Do Not Assume Open Book

Rhode Island's electrician regulations say that a candidate found referring to notes or books during an examination, except by permission of the Board, can be disqualified. At the same time, DLT recommends the current state-approved NEC as study material for electrician exams.

That means you should not assume that your Certificate A examination automatically allows unrestricted code-book use. Follow the specific examination notice and Board instructions you receive after approval.

Build these exam-prep habits

  • Study the 2023 NEC and Rhode Island amendments thoroughly
  • Practice code navigation during study even if the actual test restricts references
  • Memorize high-frequency formulas, definitions, and general trade knowledge
  • Practice solving calculations without depending on constant lookup
  • Verify exactly what references the Board permits for your scheduled examination
  • Use timed practice exams under both reference-allowed and no-reference conditions
  • Review Rhode Island license categories and contractor responsibilities

Avoid these exam-prep mistakes

  • Assuming a prep package's open-book format is the official Rhode Island exam rule
  • Bringing a 2026 NEC to test day without confirming the approved edition
  • Relying on tabs and lookups instead of learning the electrical concepts
  • Ignoring Rhode Island amendments
  • Using unauthorized notes or books
  • Skipping trade theory because you know field installation
  • Waiting until the exam notice arrives to start studying

Safest exam-day rule: use only the books, notes, calculators, tabs, or other materials that Rhode Island DLT and the Board explicitly permit for your scheduled examination.

Rhode Island Master Electrician vs Electrical Contractor Certificate A

Rhode Island's master-level contracting path is officially organized around the Electrical Contractor A, Certificate A credential.

State law says a Certificate A holder may conduct business as an electrical contractor. The law also makes an important distinction: holding Certificate A alone does not entitle the holder individually to perform the actual installation, maintenance, servicing, and testing work described in the statute.

That is why the Certificate B Journeyperson credential remains important. The contractor path requires a valid Rhode Island Certificate B held for at least two years before a candidate applies for the contractor examination.

If the contractor operates through a firm or corporation, Rhode Island also has firm and corporate certificate rules. The current electrician application lists an Electrical Corporation AC classification in addition to Electrical Contractor A.

For candidates searching the web, "Rhode Island Master Electrician" is a useful study phrase. For licensing paperwork, "Electrical Contractor A, Certificate A" is the label that matters.

Rhode Island Electrical License Comparison

Understanding the difference between Certificate A and Certificate B is central to the Rhode Island master-level path.

Credential Main Purpose Key Qualification / Difference
Certificate A Electrical Contractor Conduct electrical contracting business Requires 12,000 hours / 6 years experience and Rhode Island Certificate B held at least 2 years
Certificate B Journeyperson Electrician Perform journey-level electrical work as permitted by Rhode Island law Journey credential that must be held for the required period before Class A contractor testing
Certificate AC Electrical Corporation Corporate electrical contracting structure Separate corporate certificate tied to the qualifying electrical contractor
Certificate AF Fire Alarm Contractor Contract for fire alarm work Separate specialty contractor classification
Certificate SCF Electrical Sign Contractor Contract for electrical sign work Separate specialty classification with its own rules

Rhode Island Master Electrician Contractor Requirements

Certificate A License Holder

Business Responsibility
  • Conduct electrical contracting business within the scope of Certificate A
  • Follow Rhode Island electrical laws, Board rules, and state electrical code
  • Use properly licensed personnel for regulated electrical installation work
  • Use the appropriate firm or corporate certificate when required
  • Maintain license information on advertising, contracts, bids, and permits where required
  • Comply with permit and inspection requirements

Renewal Requirements

Every 2 Years
  • Renew according to the qualifying individual's birthday cycle
  • Complete at least 15 clock hours of Board-approved continuing education
  • Study the currently adopted NEC and Rhode Island amendments
  • Submit required continuing education verification
  • Pay current renewal fees
  • Avoid allowing the license to remain expired beyond the statutory reinstatement window

Current DLT fee example: the current electrician application lists a $75 application fee and a $240 two-year license fee for Electrical Contractor A. Always verify the latest application before paying because state fees can change.

Six-Week Rhode Island Master Electrician Exam Prep Plan

Build state-code knowledge, trade recall, calculations, and exam discipline in a sequence that moves from broad rules to full practice.

Week 1

Rhode Island Rules + NEC Setup

  • Review Certificate A and Certificate B
  • Read Rhode Island electrician rules
  • Review 2023 NEC structure
  • Study Rhode Island amendments
  • Take a diagnostic test
Week 2

Services + Feeders

  • Service calculations
  • Service equipment
  • Feeders
  • Demand factors
  • Grounding at services
Week 3

Branch Circuits + Conductors

  • Branch-circuit requirements
  • Conductor ampacity
  • Adjustment and correction
  • Overcurrent protection
  • Voltage drop
Week 4

Grounding + Wiring Methods

  • Grounding electrodes
  • Bonding
  • Equipment grounding
  • Raceways and cables
  • Boxes and conduit fill
Week 5

Motors + Special Systems

  • Motors and controls
  • Transformers
  • Special occupancies
  • Special equipment
  • Plans and trade calculations
Week 6

Exam-Mode Practice

  • Timed mixed practice exams
  • No-reference recall sets
  • Code-reference drills during study
  • Review every missed answer
  • Recheck Board exam instructions

How Hard Is the Rhode Island Master Electrician Contractor Exam?

The Rhode Island contractor exam is a higher-level electrical licensing test, and the eligibility rules alone show that the state expects experienced candidates. You must reach six years of trade experience and hold the Rhode Island journeyperson license for at least two years before applying.

The challenge is not only code knowledge. Master-level candidates need strong electrical theory, calculation habits, understanding of installation rules, awareness of Rhode Island amendments, and familiarity with contractor responsibilities.

The state requires at least a 70 percent average to obtain the license. That number can sound friendly until a motor calculation, grounding question, and Rhode Island licensing rule all arrive in the same ten-minute stretch.

The best preparation combines field experience with exam-specific repetition. Study the rule, solve the problem, review the mistake, and repeat until the reasoning becomes familiar.

Do not depend on having a book open during the test unless the Board specifically permits it. Rhode Island's regulation makes reference use an exam-instruction issue, not something candidates should assume.

Rhode Island Master Electrician Exam Day Checklist

Do this

  • Read the examination notice from Rhode Island DLT carefully
  • Bring the identification and documents required by the Board
  • Confirm the current state-approved NEC edition
  • Bring only references or materials specifically permitted for your examination
  • Review Rhode Island amendments before test day
  • Know core formulas without depending on constant lookup
  • Use a steady pacing strategy and answer the question actually asked

Do not do this

  • Assume a book is allowed because it was useful during study
  • Use notes or books without Board permission
  • Study only the 2026 NEC while ignoring Rhode Island's adopted 2023 code
  • Skip licensing and contractor-responsibility questions
  • Rush multi-step calculations
  • Confuse Certificate A business authority with Certificate B journey-level work authority
  • Wait until the morning of the exam to learn Rhode Island amendments

Passing standard: Rhode Island electrician rules require at least a 70 percent average to obtain a license. The Board's examination notice controls the exact test-day procedures for your scheduled exam.

Rhode Island Master Electrician Contractor Exam Prep Options

Master Study Guide + NEC + Tabs

Code Navigation Package
  • 2026 Rhode Island Master Electrician Study Guide
  • 2026 National Electrical Code paperback
  • NEC tabs
  • Master-level practice exams
  • Code-navigation study
  • Services, feeders, grounding, motors, and special systems
View Master + NEC Combo

Ultimate Combo

Full Study System
  • Rhode Island Master Electrician Study Guide
  • Electrician Calculations Study Guide
  • 2026 NEC with tabs
  • Master Electrician flash cards
  • Online Test Success Kit
  • Simulated practice and final exams
View Rhode Island Ultimate Combo

Code-edition warning: current 1 Exam Prep Rhode Island products are based on the 2026 NEC for updated study. Rhode Island's active Electrical Code currently adopts the 2023 NEC with state amendments. Use the official state-approved edition and exam instructions as your final authority.

Rhode Island Master Electrician exam prep based on the 2026 NEC

2026 Rhode Island Master Electrician Exam Prep

This Rhode Island-specific 1 Exam Prep credential artwork is directly related to master-level electrical study and the Rhode Island contractor path.

• Rhode Island licenses electricians statewide

• Electrical Contractor A is Certificate A

• The contractor path requires 12,000 hours or 6 years of electrical experience

• Rhode Island Certificate B must be held for at least 2 years before applying for the contractor exam

• Rhode Island requires at least a 70% examination average for licensure

• The active Rhode Island Electrical Code adopts the 2023 NEC with state amendments

• Class A and Class B license renewal requires at least 15 hours of approved continuing education

• Electrical licenses renew on a two-year cycle tied to the qualifying individual's birthday

• Current 1 Exam Prep materials can be used for structured preparation while candidates match final references to the state-approved code

Study the trade, the code, and the Rhode Island rules together. That is the cleanest way to prepare for Certificate A responsibilities.

Frequently Asked Questions

Rhode Island Master Electrician Licensing

Rhode Island licenses electricians statewide. The master-level electrical contracting path is the Electrical Contractor A license, Certificate A, regulated through Rhode Island DLT and the Board of Examiners of Electricians.
Certificate A is Rhode Island's Electrical Contractor license. It authorizes the qualified holder to conduct business as an electrical contractor under state law.
Certificate B is the Rhode Island Journeyperson Electrician license. It is also part of the qualification path for the Certificate A contractor examination.
The Rhode Island Department of Labor and Training, Division of Professional Regulation, regulates electrician licensing with the Board of Examiners of Electricians.

Certificate A Experience Requirements

Rhode Island requires at least 12,000 hours, or six years, of experience in the electrical trade for Contractor Certificate A applicants.
The Rhode Island Certificate B Journeyperson Electrician license must be valid for at least two years before applying for the electrical contractor examination.
Rhode Island's rules place out-of-state applicants on a specific path. An out-of-state applicant may need to qualify for the Rhode Island journeyperson examination first, then meet Rhode Island Certificate B and experience requirements before contractor testing. Use the current DLT application and Board rules for your exact situation.

Rhode Island Electrical Code

The active Rhode Island Electrical Code adopts the 2023 National Electrical Code with Rhode Island amendments. The active rule became effective December 1, 2025.
Yes. Rhode Island electrician regulations state that examinations are based on the NEC edition adopted by the Rhode Island State Building Code Standards Committee at the time of the examination.
Yes. The Rhode Island Electrical Code uses the NEC together with state-specific amendments, so those amendments belong in a complete exam-prep plan.

Exam Rules

Rhode Island electrician rules require applicants to obtain an average of at least 70 percent to obtain a license.
Do not assume unrestricted open-book testing. Rhode Island rules state that referring to notes or books during an examination, except by permission of the Board, can result in disqualification. Follow the exact instructions provided for your scheduled exam.
Rhode Island DLT lists the current National Electrical Code Book in the latest state-approved edition and general trade knowledge as recommended study material.
The public DLT study-material and application resources reviewed for this guide do not provide a simple official question-count and time-limit table for Certificate A. Use the examination notice issued for your approved test for current scheduling and exam-format details.

Fees and Renewal

The current DLT electrician application lists a $75 nonrefundable application fee for Electrical Contractor A. Verify the newest application before submitting payment.
The current DLT application lists a $240 two-year license fee for Electrical Contractor A after a passing result. Verify current fees with DLT before paying.
Rhode Island law states that electrical licenses expire on the birthday of the individual qualifying for the license and may be renewed for a two-year period.
Class A and Class B electricians must complete at least 15 clock hours of Board-approved continuing education as a condition of renewal.

Certificate A Work Authority

Not by Certificate A alone. Rhode Island law states that Certificate A entitles the holder to conduct business as an electrical contractor but does not by itself entitle the holder individually to perform the actual installation, maintenance, servicing, and testing work described by the statute.
Rhode Island has an Electrical Corporation AC classification and rules connecting the firm or corporation certificate to the qualifying electrical contractor. Check the current application and Board rules for the business structure you plan to use.

Exam Subjects

Study electrical theory, NEC structure, services, feeders, branch circuits, conductors, overcurrent protection, grounding and bonding, wiring methods, raceways, boxes, motors, transformers, controls, special occupancies, special equipment, special conditions, communications, plans, calculations, Rhode Island amendments, and state licensing rules.
Yes. Practice service and feeder loads, conductor sizing, voltage drop, box fill, raceway fill, motors, transformers, overcurrent protection, grounding, and other NEC-based calculations.
Yes. Code-book practice helps you learn how the rules fit together and makes your study more accurate. As test day approaches, add no-reference recall practice so you are not dependent on the book.

1 Exam Prep

Yes. 1 Exam Prep offers Rhode Island-specific Master Electrician study guides, flash cards, calculations guides, NEC combinations, practice exams, final exams, and larger study packages.
Yes. Current Rhode Island 2026 products are available based on the 2026 NEC. Rhode Island's active state Electrical Code currently uses the 2023 NEC, so candidates should match final exam preparation to the state's approved edition.
Yes. The current Ultimate Combo combines the Rhode Island Master Electrician Study Guide, Electrician Calculations Study Guide, NEC book and tabs, flash cards, and an online Test Success Kit.

Watch: Rhode Island Electrician 2026 Licensing Guide

Watch this related 1 Exam Prep Rhode Island electrician video for guidance on the state's electrician licensing path, journeyperson and contractor classifications, experience requirements, NEC study, and exam preparation.

Rhode Island master-level prep tip: use the video for the licensing overview, then build your detailed study plan around Certificate A requirements, the active 2023 NEC with Rhode Island amendments, general trade knowledge, and the exact instructions in your DLT examination notice.

Ready for Rhode Island Master Electrician Contractor Exam Prep?

Build stronger NEC knowledge, better calculation accuracy, faster problem recognition, and more confidence with services, feeders, branch circuits, conductors, grounding, bonding, wiring methods, raceways, boxes, motors, transformers, special systems, Rhode Island amendments, Certificate A rules, and contractor responsibilities.

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Rhode Island Master Electrician Exam Prep