Question 1: If the conduit is placed in hazardous locations, it must be made ...................... to prevent sparking when a fault current flows through it.
- sealed
- bonded
- wrentchtight
- rugged plastic
NEC Reference: NEC 500.8(E)
NEC CODE
NEC 2023
Hazardous Locations practice test questions-1
Take a Practice test on Hazardous locations Practice quiz questions - 1
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The National Electrical Code (NFPA 70) is the benchmark standard for safe electrical installation in the US. It is updated every 3 years by the NFPA.
Study the edition adopted by your state. As of 2025, most states use the 2020 or 2023 NEC. These tests are written to the 2023 edition.
The most tested articles are 100 (Definitions), 200–250 (Wiring & Grounding), 300–314 (Wiring Methods), 400–411 (Conductors), 430 (Motors), and 700–701 (Emergency Systems).
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TimeHazardous Locations practice test questions-1 — Question List
Question 2: Which of the following locations easily ignitable fibers/flying are stored?
- Class I Division 1
- Class III Division 1
- Class II Division 1
- Class III Division 2
NEC Reference: NEC 500.5(D)(2)
Question 3: In class I Division 1 location all fixed boxes and joints should be made .................
- explosion proof
- water proof
- dust proof
- fire proof
NEC Reference: NEC 500.7(A)
Question 4: Motors in class II division 1 location must be ..................
- totally enclosed
- totally enclosed-pipevented
- water proof
- explosion proof
NEC Reference: NEC 502.125(A)
Question 5: When a flexible cord supply a pendant fixture in a class II location it must be indicated for ............................
- hard use
- extra hard use
- class II use
- Normal use
NEC Reference: NEC 502.140
Question 6: For equipment installed in class I location which of the following type of bonding is required?
- A bonding jumper
- Double ended jumper
- hardly bonded
- compression type bonding
NEC Reference: NEC 501.30
Question 7: Which of the following color is used to identify intrinsically safe conductors?
- Green
- yellow
- red
- blue
NEC Reference: NEC 504.80(C)
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