100+ Free NETA ETT Level 2 Practice Questions

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Per ANSI/NETA ETT guidelines, the Level 2 Certified Assistant Technician examination is administered by:

The candidate's employer

Pearson VUE under NETA's direction

Prometric

IEEE Power Engineering Society

to track

2026 Statistics

Key Facts: NETA ETT Level 2 Exam

4 Domains

NETA DCO Structure

ANSI/NETA ETT

200-500

Scaled Score Range

NETA Score FAQs

410

Passing Scaled Score

NETA Score FAQs

Pearson VUE

Exam Delivery

NETA / Pearson VUE

~2 years

Typical Experience

ANSI/NETA ETT

NAC

Required Employer

NETA

60 days

Retake Waiting Period

NETA Score FAQs

100

Practice Questions

OpenExamPrep

Per NETA and Pearson VUE, the NETA Level 2 Certified Assistant Technician exam is delivered closed-book at Pearson VUE test centers and is scored on a 200-500 scale with 410 as the passing scaled score (no raw-score cutoff is published). The exam covers the four ANSI/NETA ETT Detailed Content Outline domains — Safety, Electrical Testing Fundamentals and Theory, Component Testing, and Systems and Commissioning — and candidates must be employed by a NETA Accredited Company and have roughly two years of qualifying experience (technical education can credit up to one year per the standard).

Sample NETA ETT Level 2 Practice Questions

Try these sample questions to test your NETA ETT Level 2 exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Per ANSI/NETA ETT guidelines, the Level 2 Certified Assistant Technician examination is administered by:

A.The candidate's employer

B.Pearson VUE under NETA's direction

C.Prometric

D.IEEE Power Engineering Society

Explanation: Per the NETA/Pearson VUE website, Levels 2, 3, and 4 certification exams are administered by Pearson VUE at authorized test centers. Level 1 Trainee assessment is conducted by the candidate's NETA Accredited Company employer.

2The passing scaled score for a NETA certification exam (including Level 2) is:

A.500

B.410 (scaled score range 200 to 500)

C.690 out of 800

D.70 percent

Explanation: Per NETA's published 'Understanding Your Certification Exam Score' document, scaled scores range from 200 to 500 and 410 is the passing scaled score established through standard setting. Raw scores are converted to scaled scores so forms remain equivalent.

3The NETA exam covers four domains. Which of the following is NOT one of those four domains?

A.Safety

B.Electrical Testing Fundamentals and Theory

C.Component Testing

D.Relay Settings and SCADA Programming

Explanation: The four ANSI/NETA ETT DCO domains are: (I) Safety, (II) Electrical Testing Fundamentals and Theory, (III) Component Testing, and (IV) Systems and Commissioning. Relay programming falls under Component/Systems, not a distinct domain.

4A 480 V motor is tested with a 1000 V DC insulation resistance test. One-minute reading is 150 megohms; 10-minute reading is 450 megohms. The Polarization Index (PI) is:

A.0.33

B.1.5

C.3.0 — indicating good insulation

D.30

Explanation: Polarization Index = R(10 min) / R(1 min) = 450 / 150 = 3.0. Per IEEE 43, a PI of 2.0 or higher generally indicates good insulation for Class B and higher thermal classes.

5A Dielectric Absorption Ratio (DAR) is the ratio of:

A.10-minute to 1-minute insulation resistance

B.60-second to 30-second insulation resistance readings

C.Test voltage to leakage current

D.Final current to initial current

Explanation: DAR = IR(60 s) / IR(30 s). It provides a quicker indication than PI, useful when a 10-minute test is impractical. DAR below 1.25 typically indicates poor insulation; above 1.6 is good.

6A transformer turns ratio (TTR) test measures:

A.The insulation resistance between primary and secondary

B.The ratio of primary turns to secondary turns on each tap

C.The transformer oil dielectric strength

D.The winding resistance in ohms

Explanation: A TTR test applies a low-voltage AC source to one winding and measures the induced voltage on the other, computing the turns ratio. Per ANSI/NETA ATS/MTS, measured ratio should be within +/- 0.5% of nameplate on all taps.

7TTR deviation from nameplate exceeding what tolerance indicates potential winding problems per ANSI/NETA standards?

A.0.1 percent

B.0.5 percent

C.2 percent

D.5 percent

Explanation: ANSI/NETA ATS and MTS specify TTR measured ratios should deviate by no more than 0.5% from the calculated or nameplate ratio. Larger deviations may indicate shorted turns, tap changer problems, or winding damage.

8Winding resistance measurements on a transformer are typically performed using:

A.A simple DMM on the 200-ohm range

B.A low-resistance ohmmeter (micro-ohmmeter) with 4-wire Kelvin connections

C.A megohmmeter

D.An insulation power factor test set

Explanation: Winding resistance is measured using a DC micro-ohmmeter with 4-wire (Kelvin) connections to eliminate lead resistance errors. Test current must be sufficient to magnetize the core; readings are compared phase-to-phase and against prior tests.

9A contact resistance (Ductor) test on a low-voltage circuit breaker main contact is performed to:

A.Measure insulation resistance of the contact

B.Verify the DC resistance across closed contacts is within specification — typically 10s to 100s of micro-ohms

C.Test the arc chute

D.Measure trip time

Explanation: A contact resistance (Ductor/micro-ohmmeter) test injects a known DC current (typically 100 A for breakers) through closed contacts and measures the voltage drop to calculate resistance. Values typically 10s to 100s of micro-ohms; compare phase-to-phase and to manufacturer specifications.

10A 'step voltage' test on cable insulation applies DC voltage in increasing steps. The primary indicator of a problem is:

A.Any change in leakage current

B.A non-linear (increasing) leakage current with voltage — indicates degraded insulation

C.Any reading below 1 megohm

D.The temperature of the cable

Explanation: In a step-voltage test, leakage current should be linear and stable at each voltage step for healthy insulation. A disproportionate increase in current at higher steps indicates insulation breakdown or contamination.

About the NETA ETT Level 2 Exam

NETA ETT Level 2 (Certified Assistant Technician) is the first fully certified tier in the ANSI/NETA ETT hierarchy. Level 2 technicians perform limited testing and service work under direct supervision of a Level 3 or Level 4 technician, and the exam covers four domains: Safety; Electrical Testing Fundamentals and Theory; Component Testing; and Systems and Commissioning.

Assessment

Closed-book, computer-based at Pearson VUE test centers

Time Limit

Typically 2 hours (per NETA study guide history)

Passing Score

Scaled score 410 (scale 200-500) per NETA

Exam Fee

Set by NETA; exam fees, retake fees, and testing windows administered through candidate's NETA Accredited Company (NETA / Pearson VUE)

NETA ETT Level 2 Exam Content Outline

Per NETA DCO

Safety

NFPA 70E approach boundaries and PPE, OSHA 1910.147/269, energized work permits, temporary protective grounds, induced voltage mitigation, and hipot testing safety.

Per NETA DCO

Electrical Testing Fundamentals and Theory

Three-phase systems, grounded vs. grounding conductors, ANSI device numbers (50, 51, 87, etc.), CT/PT theory, IDMT curves, voltage unbalance, and symmetrical components basics.

Per NETA DCO

Component Testing

IR, PI, DAR, TTR, winding resistance, contact resistance (Ductor), ground electrode testing (fall-of-potential, clamp-on), VLF and DC hipot, vacuum bottle integrity, and SPD verification.

Per NETA DCO

Systems and Commissioning

Automatic transfer switches, control-circuit IR, as-found/as-left documentation, NFPA 110 emergency system tests, and restoration/handover workflow.

Context

Exam and Program Administration

Pearson VUE delivery, NETA Accredited Company sponsorship, ANSI/NETA ETT certification hierarchy, and recertification via CTDs at Levels 3 and 4.

How to Pass the NETA ETT Level 2 Exam

What You Need to Know

Passing score: Scaled score 410 (scale 200-500) per NETA
Assessment: Closed-book, computer-based at Pearson VUE test centers
Time limit: Typically 2 hours (per NETA study guide history)
Exam fee: Set by NETA; exam fees, retake fees, and testing windows administered through candidate's NETA Accredited Company

Keys to Passing

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

NETA ETT Level 2 Study Tips from Top Performers

1Build fluency with the four NETA DCO domains before drilling questions — every exam item maps back to Safety, Fundamentals/Theory, Component Testing, or Systems/Commissioning.

2Drill PI (10-min / 1-min), DAR (60-s / 30-s), and the kV+1 vs. 100 megohm minimum from IEEE 43 until you can solve them without looking up.

3Memorize ANSI device numbers 27, 50, 51, 59, 87, 86 and understand why IDMT curves exist — these show up across many Level 2 questions.

4Practice TTR acceptance (+/- 0.5 percent), contact resistance (micro-ohm range), and how CT ratio and polarity affect relay operation.

5Learn the live-dead-live sequence cold — plus secondary fuse/grounding practices for PTs and the open-CT hazard rule for CTs.

6Study ANSI/NETA MTS vs ATS differences (voltage levels, acceptance criteria) and typical test voltages by equipment class from the NETA tables.

7Review NFPA 70E PPE categories (1, 2, 3, 4 with 4, 8, 25, 40 cal/cm^2) and rubber glove classes (00 through 4) — common Level 2 quick-hit questions.

8Use the official NETA Practice Exam ($100, 40-50 retired questions, 60-day review) once you are consistently passing free practice sets to assess exam-day readiness.

Frequently Asked Questions

Who administers the NETA Level 2 exam?

Per NETA and Pearson VUE, NETA Levels 2, 3, and 4 certification exams are administered by Pearson VUE at authorized test centers. Registration is managed through the candidate's NETA Accredited Company (only Level 1 Trainee assessment is 'by employer').

What is the passing score for the NETA Level 2 exam?

Per NETA's 'Understanding Your Certification Exam Score' document, scaled scores range from 200 to 500, with 410 as the passing scaled score established through a formal standard-setting process. Raw scores are transformed to scaled scores so forms remain equivalent.

How many questions are on the NETA Level 2 exam and how long does it last?

Per longstanding NETA study guide content, the Level 2 exam is typically around 100 questions with approximately two hours to complete. NETA does not publish current question counts on its public website; candidates should refer to the latest NETA candidate materials for the definitive numbers.

What are the four NETA ETT exam domains?

Per the ANSI/NETA ETT Detailed Content Outlines, every NETA exam (Levels 2, 3, 4) is organized into four domains: (I) Safety; (II) Electrical Testing Fundamentals and Theory; (III) Component Testing; and (IV) Systems and Commissioning. Exact percentages vary by level and per the 2026 DCO revision.

How much experience do I need to sit for the NETA Level 2 exam?

Per ANSI/NETA ETT, Level 2 candidates typically need approximately 2 years of qualifying related experience (roughly 2,000 hours of documented field work). Completion of two or more years of technical education in an electrical field can count as up to one year of related experience per the standard.

Do I have to work for a NETA Accredited Company to be certified?

Yes. NETA certification is only available to technicians employed by a NETA Accredited Company (or a NETA Approved Military Organization). If you are not currently employed by one, you would typically begin by joining a NETA Accredited Company first, then working toward Level 2 eligibility.

What references should I study for NETA Level 2?

Per NETA's Exam Preparation page, core references include ANSI/NETA ATS, ANSI/NETA MTS, ANSI/NETA ETT, NFPA 70E, NFPA 70 (NEC), IEEE 43 (rotating machinery IR), and applicable IEEE, NEMA, and manufacturer documentation. NETA also publishes a Formulae Sheet that will be available on-screen during the exam.

How do I recertify NETA Level 2?

Per NETA FAQ, Level 3 and Level 4 require 48 CTDs (Continuing Technical Development credits) every three years. Level 2 recertification practices follow NETA's broader program and the candidate must maintain employment at a NETA Accredited Company; up to five years of separation with documented CTDs can preserve eligibility to reinstate per NETA policy.