100+ Free gh-ec-electrical-wiring-industrial Practice Questions

Pass your Energy Commission Ghana Certified Electrical Wiring Professional - Industrial (Ghana) exam on the first try — instant access, no signup required.

✓ No registration✓ No credit card✓ No hidden fees✓ Start practicing immediately

~55% Pass Rate

100+ Questions

100% Free

Loading practice questions...

Same family resources

Explore More Energy Commission Ghana Electrical Wiring

Continue into nearby exams from the same family. Each card keeps practice questions, study guides, flashcards, videos, and articles in one place.

Certified Electrical Wiring Professional - Commercial (Ghana)

Practice Questions100 questions

Energy Commission Ghana Certified Electrical Wiring Professional - Domestic (Ghana)

Practice Questions100 questions

2026 Statistics

Key Facts: gh-ec-electrical-wiring-industrial Exam

GH¢1,080

Industrial Exam Fee

Energy Commission

L.I. 2008

Electrical Wiring Law

Ghana Parliament

Form A

Completion Certificate

Utility Connection

GS 1009

Ghana Wiring Standard

Standards Authority

1.0 MΩ

Min Insulation Resistance

Testing Code

30mA

RCD Trip Threshold

Personnel Safety

The CEWP Industrial exam is Ghana's national standard for industrial electrical practitioners. It certifies competence in L.I. 2008, three-phase systems, motor controls, and industrial earthing. Candidates must pass a written test, a practical installation test, and an oral interview.

Sample gh-ec-electrical-wiring-industrial Practice Questions

Try these sample questions to test your gh-ec-electrical-wiring-industrial exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Under Ghana's Electrical Wiring Regulations, 2011 (L.I. 2008), who is legally authorized to execute electrical wiring installations in an industrial facility?

A.Any electrical technician with a minimum of five years of experience

B.A Certified Electrical Wiring Professional - Industrial (CEWP-Industrial) licensed by the Energy Commission

C.A certified domestic electrician supervised by an industrial plant owner

D.Any engineering graduate from a recognized Ghanaian university

Explanation: Under Regulation 2 of L.I. 2008, only a Certified Electrical Wiring Professional (CEWP) of the appropriate class (Industrial, in this case) is legally authorized to undertake electrical wiring works. This ensures that only practitioners who have been vetted, tested, and certified by the Energy Commission of Ghana handle complex three-phase industrial systems.

2What legal penalty is prescribed under L.I. 2008 for a person who undertakes electrical wiring work without valid Energy Commission certification?

A.A minor administrative warning letter from the utility company

B.A fine, a term of imprisonment, or both, as determined by a court of law

C.Compulsory attendance at an electrical wiring seminar without any fine

D.Temporary suspension of their university engineering degree

Explanation: Regulation 27 of the Electrical Wiring Regulations, 2011 (L.I. 2008) prescribes that any person who contravenes the regulations, including practicing without certification, commits an offense and is liable on summary conviction to a fine, imprisonment, or both. This strict penalty is intended to deter illegal wiring practices that endanger lives and property.

3Which statutory document must be completed, signed, and submitted by a CEWP to the utility company (e.g., ECG or NEDCo) before a completed industrial installation can be connected to the grid?

A.An Electrical Load Allocation Request Sheet

B.An Installation Completion Certificate, commonly known as Form A

C.A Ghana Standards Authority material test report

D.A local municipal building occupancy permit

Explanation: Under Regulation 11 of L.I. 2008, the CEWP who executed or supervised the wiring must inspect, test, and sign the Installation Completion Certificate (Form A). The utility provider (ECG/NEDCo) is legally prohibited from connecting the installation to the grid without receiving this valid certificate, which attests to safety compliance.

4In Ghana, which official body is responsible for certifying that electrical materials and cables meet national standards before they can be legally sold or used in electrical installations?

A.The Ghana Standards Authority (GSA)

B.The Electricity Company of Ghana (ECG)

C.The Ministry of Energy

D.The Institution of Engineering and Technology, Ghana (IET)

Explanation: The Ghana Standards Authority (GSA) is the statutory body responsible for developing, publishing, and enforcing national standards for electrical products (such as GS 1009 compliance). All cables and wiring materials must be tested and certified by the GSA to ensure they are safe, flame-retardant, and have the correct copper purity.

5How often must a Certified Electrical Wiring Professional (CEWP) license be renewed with the Energy Commission of Ghana?

A.Every five years

B.Every year (annually)

C.Once in a lifetime, with no renewal necessary

D.Every ten years, subject to a medical exam

Explanation: To maintain active status and ensure practitioners remain up-to-date with safety codes, the Energy Commission requires annual renewal of the CEWP practitioner license. This process includes validating that the professional continues to operate safely and complies with any new regulations.

6Under Ghana's Electrical Wiring Regulations, what is the maximum current rating for a single-phase supply, above which a three-phase supply becomes mandatory for the property?

A.30 A

B.60 A

C.100 A

D.200 A

Explanation: In Ghana, utility regulations (aligned with GS 1009) restrict single-phase connections to a maximum current load of 60 A (equivalent to approximately 13.8 kVA at nominal voltage). Any installation with a designed maximum demand exceeding 60 A must be supplied via a three-phase connection to maintain phase balance on the utility network.

7Which Ghana Standard (GS) code represents the national code of practice governing electrical wiring installations in buildings?

A.GS ISO 9001

B.GS 1009

C.GS 22000

D.GS OHSAS 18001

Explanation: GS 1009 is the specific Ghana Standard for Electrical Wiring in Buildings, developed by the Ghana Standards Authority in collaboration with the Energy Commission. It serves as the primary technical code of practice for design, installation, testing, and maintenance of low-voltage electrical systems.

8Under L.I. 2008, what is the legal consequence if an owner of an industrial facility employs an uncertified wireman to carry out electrical installation works?

A.Only the uncertified wireman commits an offense; the owner is exempt

B.Both the facility owner and the uncertified wireman commit an offense and are liable for prosecution

C.The utility company will connect power but will double the tariffs permanently

D.The owner is merely required to pay a small administrative registration fee to clear the issue

Explanation: Regulation 2 of the Electrical Wiring Regulations, 2011 (L.I. 2008) states that a person shall not undertake electrical wiring works unless certified. Hiring an uncertified person is a direct violation, making both the contractor and the facility owner/occupier who contracted them liable for violating statutory safety laws.

9What is the primary role of a Certified Electrical Wiring Inspector (CEWI) certified by the Energy Commission?

A.To design industrial motor control centers for private companies

B.To audit, inspect, and verify the safety of electrical installations before they are connected to the public utility grid

C.To sell Energy Commission-approved cables and switchgear to contractors

D.To serve as a labor union representative for electrical wiremen

Explanation: CEWIs act as independent safety auditors on behalf of the Energy Commission. Their primary role is to inspect installations, check test readings, verify the validity of the CEWP's Form A, and confirm compliance with GS 1009 before grid connection.

10According to the Energy Commission of Ghana guidelines, what is the maximum period of time an industrial installation can operate before it must undergo a mandatory periodic inspection and testing for safety?

A.Every year

B.Every three years

C.Every ten years

D.No periodic testing is required unless a fire occurs

Explanation: Due to the high vibration, thermal loading, dust, and mechanical wear in industrial environments, the national standard requires a periodic inspection and testing of all industrial installations at least once every three years. This ensures safety systems like earthing and RCDs continue to function.

About the gh-ec-electrical-wiring-industrial Exam

The Certified Electrical Wiring Professional (CEWP) Industrial exam is the highest wiring certification class administered by the Energy Commission of Ghana under the Electrical Wiring Regulations, 2011 (L.I. 2008). It licenses professionals to design, install, test, and commission three-phase electrical systems and motor control machinery in factories, industrial complexes, and high-voltage commercial structures. The certification requires passing a rigorous written exam, a hands-on practical wiring test, and an oral board interview.

Assessment

100 practice questions covering L.I. 2008, industrial switchgear, motor controls, cable sizing, earthing, and testing

Time Limit

2.5 hours

Passing Score

Satisfactory rating across written, practical, and oral assessments

Exam Fee

GH¢1,080 (Energy Commission of Ghana)

gh-ec-electrical-wiring-industrial Exam Content Outline

15%

Ghana Electrical Wiring Regulations (L.I. 2008) & Standards

Statutory requirements under L.I. 2008, safety codes, permits, materials approvals (GSA), and Form A certification.

15%

Three-Phase Power Distribution & Industrial Switchgear

Three-phase supply configuration, busbar systems, switchboard design, circuit protection (MCCBs, fuses, RCDs), and load balancing.

25%

Motor Control Systems & Starters

Contactor circuits, overload relay sizing, DOL, Star-Delta, auto-transformer starters, VFD parameters, and forward-reverse controls.

15%

Cable Selection, Sizing & Installation

Conductor materials, sizing calculations based on voltage drop and current carrying capacity, correction factors, conduit and cable tray bending/installation.

15%

Earthing, Grounding & Bonding Systems

TN-S, TN-C-S, and TT earthing arrangements, earth loop impedance, bonding of extraneous conductive parts, and lightning protection.

15%

Inspection, Testing & Commissioning

Dead/live testing (continuity, insulation resistance, polarity, loop impedance), troubleshooting industrial faults, and utility connection procedures.

How to Pass the gh-ec-electrical-wiring-industrial Exam

What You Need to Know

Passing score: Satisfactory rating across written, practical, and oral assessments
Assessment: 100 practice questions covering L.I. 2008, industrial switchgear, motor controls, cable sizing, earthing, and testing
Time limit: 2.5 hours
Exam fee: GH¢1,080

Keys to Passing

Complete 500+ practice questions
Score 80%+ consistently before scheduling
Focus on highest-weighted sections
Use our AI tutor for tough concepts

gh-ec-electrical-wiring-industrial Study Tips from Top Performers

1Learn three-phase motor control circuit diagrams, including DOL, Star-Delta, and forward-reverse starters using latching and interlocking contacts.

2Memorize L.I. 2008 regulations regarding the mandatory use of GSA-approved materials, the completion of Form A, and penalties for non-compliance.

3Practice three-phase load balancing calculations and understand the implications of neutral currents in unbalanced systems.

4Master cable sizing calculations using current capacity rating tables, correction factors for ambient temperature (often 40°C in Ghana), grouping, and voltage drop limits.

5Study grounding systems: TN-S, TN-C-S, and TT. Note that TT earthing is very common in Ghana's distribution network, and understand how to measure earth electrode resistance.

6Know the exact sequence of testing: Continuity of protective conductors, insulation resistance (minimum 1.0 MΩ at 500V DC), polarity (switches on phase lines), and loop impedance testing.

7Understand the functions of protective devices like MCCBs, HRC fuses, and RCDs, including the 30mA trip current requirement for socket-outlet circuits.

Frequently Asked Questions

What is the CEWP Industrial certification?

It is the professional licensing credential issued by the Energy Commission of Ghana that authorizes electricians to legally install, test, and commission electrical wiring in industrial and high-voltage environments, such as factories and large manufacturing plants.

Who is required to hold a CEWP license under Ghanaian law?

Under the Electrical Wiring Regulations, 2011 (L.I. 2008), any individual performing electrical wiring installations in Ghana must be certified as a Certified Electrical Wiring Professional (CEWP) by the Energy Commission. Performing wiring without this license is a criminal offense.

What is the difference between Domestic, Commercial, and Industrial CEWP certifications?

Domestic allows wiring single-phase residential buildings with up to 60A. Commercial covers larger multi-phase commercial buildings, offices, and shopping centers. Industrial covers three-phase manufacturing plants, motor control centers, factories, and installations operating at high currents and voltages.

What is the Form A certificate in Ghana?

Form A (Installation Completion Certificate) is a statutory document filled out and signed by the CEWP after completing and testing an installation. The Electricity Company of Ghana (ECG) or Northern Electricity Distribution Company (NEDCo) will not connect an installation to the national grid without a valid Form A signed by a licensed CEWP.

What is the structure of the CEWP Industrial exam?

The examination is conducted in three stages: a written exam testing theory and regulations, a practical exam where candidates wire an industrial panel (such as a motor control circuit with specific contactors and overloads), and an oral interview where examiners grill the candidate on safety, electrical formulas, and L.I. 2008 rules.