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| Section | Weight | Objectives |
|---|---|---|
| Safety | 15% | - Electrical Safety Fundamentals
|
| Systems and Commissioning | 5% | - System-Level Testing
|
| Component Testing | 55% | - Electrical Equipment Testing
|
| Electrical Testing Fundamentals and Theory | 25% | - Basic Electrical Theory
|
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NEW QUESTION # 35
Class 00 rubber insulating gloves are proof-tested at2,500 VAC. What color label would you expect to find on these gloves?
Answer: B
Explanation:
Rubber insulating gloves are color-coded to indicate their voltage class and test rating.Class 00 gloves, rated for low-voltage work, are proof-tested at2,500 VACand are identified by awhite label.
NETA Level 2 technicians must verify glove class, test date, and physical condition before use. Using gloves of the incorrect class or expired test date creates a serious safety risk. Color identification allows quick visual verification in the field, supporting compliance with electrical safety requirements.
NEW QUESTION # 36
Which lubricant is commonly specified for use in bothconductiveandmechanicalareas of circuit breakers and switches?
Answer: B
Explanation:
Circuit breakers and switches include bothcurrent-carrying interfaces(where conductivity and contact integrity matter) andmechanical moving components(where friction, wear, and smooth operation matter).
NETA Level 2 objectives expect technicians to follow manufacturer guidance and industry-accepted practices for cleaning and lubrication during inspection and maintenance activities.
Mobil 28is widely referenced in the industry for breaker and switch applications because it performs reliably over a broad temperature range and provides stable lubrication for mechanical parts while being used in certain conductive interfaces where specified. The key is that lubrication must match the component requirements: too much lubricant, the wrong type, or applying lubricant in inappropriate locations can attract contamination, increase resistance at contacts, or interfere with proper mechanism operation.
WD-40 is not an appropriate precision lubricant for breaker mechanisms. Graphite can be conductive and create unintended paths, and dielectric silicone greases are primarily intended for insulating/anti-moisture applications rather than general breaker conductive/mechanical lubrication unless specifically approved.
In NETA-style work, lubrication is not "generic"-it is controlled by procedure, manufacturer instructions, and the intended function of the surfaces involved.
NEW QUESTION # 37
How many connection points are typically found on a Kelvin bridge used for low-resistance measurements?
Answer: B
Explanation:
A Kelvin bridge, also known as a four-wire resistance measurement device, usesfour connection pointsto accurately measure very low resistances. These consist of twocurrent terminalsand twopotential (voltage) terminals.
This configuration eliminates the effects of lead resistance and contact resistance, which can significantly distort measurements when testing bolted connections, bus joints, and grounding conductors. NETA Level 2 technicians routinely use Kelvin methods when performing low-resistance ohmic measurements during acceptance and maintenance testing.
Using fewer than four terminals would result in inaccurate readings, especially at milliohm or micro-ohm levels. Understanding this principle ensures proper test setup and reliable data interpretation.
NEW QUESTION # 38
What effect does enablingthermal memoryhave on thelong-time delay (LTD)operation of a low-voltage digital overcurrent protective device?
Answer: C
Explanation:
Thermal memory accounts for residual heating in conductors and equipment following overloads. When enabled, itreduces the long-time delay operating time, allowing faster tripping if a subsequent overload occurs. NETA Level 2 technicians must understand this behavior during injection testing and when reviewing breaker trip performance.
NEW QUESTION # 39
OSHA requires testing of a voltmeterafterverifying absence of voltage when testing circuits above what voltage level?
Answer: D
Explanation:
A core safety practice in electrical testing is verifying that your voltage tester is functioning properlyboth before and afterperforming a test for absence of voltage. This practice is commonly summarized as"live- dead-live": test the meter on a known live source, test the circuit (dead check), then re-test on a known live source to ensure the meter didn't fail during the process.
Within OSHA-related electrical safety expectations and common field practice aligned with NETA work, this verification is emphasized especially in higher-voltage contexts, and the flash-card target here isabove 600 V.
Above this threshold, the consequences of a false "dead" reading are severe, and verification of instrument operation becomes non-negotiable.
NETA Level 2 technicians must demonstrate disciplined instrument verification habits. Even if a meter reads zero, it must be proven functional immediately afterward. This prevents relying on a meter with a blown fuse, dead battery, damaged leads, or internal failure-each of which could incorrectly indicate "no voltage" on an energized system.
NEW QUESTION # 40
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