100+ Free GER Category 3 Practice Questions

Prepare for the Jamaica Government Electrical Regulator (GER) Registered Electrician Category 3 Examination exam with instant access — no signup required.

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Key Facts: GER Category 3 Exam

250V

Maximum Voltage

GER Regulations

150 kVA

Maximum Power

GER Regulations

2 Years

License Validity

GER

5 Years

Required Experience

GER

$25,000

Total Fees (JMD)

GER Portal

The Jamaica GER Registered Electrician Category 3 License enables professionals to carry out and supervise single-phase electrical work up to 250V and 150 kVA. Candidates must have a HEART Trust/NTA Level 3 certification (or equivalent), 5 years of verified experience, and pass the GER written and practical examinations.

Sample GER Category 3 Practice Questions

Try these sample questions to test your GER Category 3 exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1What is the maximum voltage permitted for electrical installations supervised or carried out by a Category 3 Registered Electrician in Jamaica?

A.250 Volts

B.110 Volts

C.600 Volts

D.1000 Volts

Explanation: Under the Government Electrical Regulator (GER) licensing framework in Jamaica, a Category 3 Registered Electrician is authorized to carry out or supervise electrical work designed to operate at voltage levels not exceeding 250 Volts.

2A Category 3 Registered Electrician in Jamaica is restricted to which phase configuration?

A.Single-phase only

B.Three-phase delta only

C.Three-phase star only

D.Both single-phase and three-phase up to 250V

Explanation: Category 3 Registered Electricians are strictly restricted to single-phase systems. Work on any three-phase configurations, regardless of voltage, is prohibited under this category.

3What is the maximum electrical power capacity limit authorized for Category 3 Registered Electricians in Jamaica?

A.150 kVA

B.50 kVA

C.500 kVA

D.Unlimited kVA

Explanation: According to the Government Electrical Regulator (GER) regulations, the maximum power capacity authorized for a Category 3 Registered Electrician's installation is 150 kVA.

4Which legislative act governs the registration and regulation of electricians and inspectors in Jamaica?

A.The Electricity Act, 2015

B.The Electric Lighting Act, 1890

C.The Building Act, 2018

D.The Jamaica Standards Act, 1969

Explanation: The Electricity Act, 2015 is the principal law that governs the generation, distribution, supply, and safety of electricity in Jamaica, including establishing the Government Electrical Regulator (GER) to license electricians.

5What is the standard electrical supply frequency provided by the Jamaica Public Service Company (JPS) for residential service?

A.50 Hz

B.60 Hz

C.25 Hz

D.100 Hz

Explanation: The standard utility grid frequency supplied by the Jamaica Public Service Company (JPS) across Jamaica is 50 Hertz (Hz).

6Which of the following bodies is responsible for testing and registering electricians in Jamaica?

A.Government Electrical Regulator (GER)

B.Jamaica Public Service Company (JPS)

C.Bureau of Standards Jamaica (BSJ)

D.Office of Utilities Regulation (OUR)

Explanation: The Government Electrical Regulator (GER), established under the Ministry of Energy, is the statutory body responsible for licensing and registering electricians and inspectors in Jamaica.

7What is the minimum age requirement for a person to be registered as an electrician in Jamaica?

A.18 years

B.16 years

C.21 years

D.25 years

Explanation: To qualify for registration as an electrician under the Government Electrical Regulator (GER) guidelines, the applicant must be at least 18 years of age.

8Under JS 21, what color is standard for identifying the protective earth (ground) conductor in a single-phase wiring system?

A.Green or Green-with-Yellow stripe

B.White

C.Black

D.Red

Explanation: Under the JS 21 code, the protective earth (ground) conductor must be colored green, green with yellow stripes, or left as bare copper.

9What is the unit of measure for electrical resistance?

A.Ohm

B.Volt

C.Ampere

D.Watt

Explanation: Resistance, which is the opposition to the flow of electric current, is measured in Ohms (symbolized by the Greek letter omega, Ω).

10According to Ohm's Law, what is the formula for calculating voltage (V) when current (I) and resistance (R) are known?

A.V = I x R

B.V = I / R

C.V = R / I

D.V = I + R

Explanation: Ohm's Law states that Voltage (V) equals Current (I) multiplied by Resistance (R).

About the GER Category 3 Exam

Licensing exam for Category 3 registered electricians in Jamaica. Covers single-phase installations up to 250V and 150 kVA, JS 21 electrical code, earthing, safety, and testing.

Assessment

Question count not published by the exam provider

Time Limit

2 hours

Passing Score

70%

Exam Fee

$15,000 JMD (Government Electrical Regulator (GER))

GER Category 3 Exam Content Outline

30%

Electrical Installation Theory

AC/DC principles, supply systems, load and voltage drop calculations, single-phase calculations

25%

JS 21 Electrical Code & Regulations

Jamaica Standard JS 21 rules, wire sizing, conduit fill, color coding, clearances

20%

Grounding, Earthing & Bonding

Earth rods, continuity, ECC sizing, neutral-ground bond rules, main bonding jumpers

15%

Safety, Protection & Shock Treatment

Circuit breakers, GFCI/AFCI, LOTO, shock first aid, Class C fire safety

10%

Testing & Commissioning

Megger insulation resistance tests, polarity tests, earth loop impedance tests

How to Pass the GER Category 3 Exam

What You Need to Know

Passing score: 70%
Assessment: Question count not published by the exam provider
Time limit: 2 hours
Exam fee: $15,000 JMD

Keys to Passing

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

GER Category 3 Study Tips from Top Performers

1Master single-phase calculations, including Ohm's Law, power factor, and voltage drop limits under JS 21.

2Memorize the Category 3 licensing limits: strictly single-phase, up to 250V, and a maximum of 150 kVA.

3Study the JS 21 standards for conductor sizing (1.5 mm² for lighting, 2.5 mm² for sockets) and conduit fill limits (max 5 wires of 2.5 mm² in 20mm pipe).

4Understand grounding regulations, including the 25-Ohm maximum earth electrode resistance and neutral-earth bonding strictly at the main panel.

5Be prepared for the practical phase: practice insulation resistance testing (minimum 1.0 Megohm at 500V DC) and earth loop impedance testing.

Frequently Asked Questions

What is a Category 3 Registered Electrician in Jamaica authorized to do?

A Category 3 Registered Electrician is licensed to carry out, modify, or supervise single-phase electrical installations designed to operate at voltages not exceeding 250 Volts, with a maximum power capacity of 150 kVA.

What are the requirements to sit the GER Category 3 electrician exam?

Applicants must be at least 18 years old, possess a HEART Trust/NTA Level 3 qualification (or equivalent) in Electrical Installation, and have at least 5 years of practical experience verified by a voluntary declaration from a registered electrician or inspector.

How much does the GER Category 3 electrician registration cost?

The application fee is $10,000 JMD and the new registration examination fee is $15,000 JMD, bringing the total initial cost to $25,000 JMD payable to the Government Electrical Regulator (GER).

What is the format of the GER Category 3 exam?

The examination process consists of two stages: a written examination testing electrical theory, calculations, and the JS 21 code, followed by a practical/oral assessment where candidates demonstrate their hands-on installation and testing skills.

How long is the GER Registered Electrician license valid?

Registration with the Government Electrical Regulator (GER) is valid for two (2) years. Electricians must apply for renewal prior to expiration through the official GER online portal.