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NCCER TEST PRACTICE QUESTIONS
WITH CORRECT ANSWERS LATEST
UPDATE 2026
In a guardrail system, the guardrails can be made of any of the following EXCEPT: a) pipe b) chain c) ropebanding d) cable - correct answer-Ropebanding If the potential across the circuit is 48 volts and the current is 5 amps the resistance of the circuit is: a) 4.8 ohms b) 9.6 ohms c) 48.0 ohms d) 96.0 ohms - correct answer-9..6 ohms A UL listed rod type grounding electrode must have a MINIMUM length of: a) 6'
b) 8' c) 10' d) 20' - correct answer-8' What is the MINIMUM number of overload sensing units required for all three phase motors? a) 0 b) 1 c) 2 d) 3 - correct answer- 3 In a circuit of pure capacitance, the current leads the voltage by an angle of: a) 30 - degrees b) 45-degrees c) 90-degrees d) 180-degrees - correct answer- 90 - degrees The standard unit for measuring the cross-sectional area of wire is the: a) circular mil
a) criss-cross b) vertical zig-zag c) circular d) serpentine - correct answer-Serpentine An auxiliary holding contact (seal-in) on a NEMA starter is indicated by the terminal marking: a) 13 & 14 b) 2 & 3 c) T1 & T d) A1 & A2 - correct answer-A1 & A The neutral bus in a sub panel: a) is bonded b) is isolated c) has its own ground rod d) terminates bare and neutral wires - correct answer-Is bonded The PEAK voltage in a nominal 120/208 VAC system is: a) 120 V
b) 170 V c) 208 V d) 277 V - correct answer- 2 08 V THWN conductors have an outer jacket made of: a) thermoset b) teflon c) nylon d) nomex - correct answer-Nylon What is shown on a sectional drawing? a) cutaway view of a building b) top view of a building c) front view of a building d) side view of a building - correct answer-Cutaway view of a building Who is allowed to remove another electrician's tag or lock from any valve, switch, or piece of equipment without proper authorization? a) an inspector
