Electrical NCCER Test Questions and Correct Answers

In a guardrail system, the guardrails can be made of any of the following EXCEPT: ropebanding If the potential across the circuit is 48 volts and the current is 5 amps the resistance of the circuit is: 9.6 ohms A UL listed rod type grounding electrode must have a minimum length of: 8' What is the MINIMUM number of overload sensing units required for all three phase motors? 3 In a circuit of pure capacitance, the current leads the voltage by an angle of: 90-degrees The standard unit for a measuring the cross-sectional area of a wire is the: circular mil The drawing scale is MOST likely to be found in which of the following drawing locations? the drawing little block The length of a bare copper conductor in a ground ring MUST be buried no less than 2.5' below grade and with a length of at least: 20 ft. When installing heating cables for anti-icing systems, cable patters should be in a: Serpentine An auxiliary holding contact (seal-in) on a NEMA starter is indicated by the terminal marking: A1 & A2 The neutral bus in a sub panel: is bonded The PEAK voltage in a nominal 120/208 VAC system is: 208V. THWN conductors have an outer jacket made of: nylon What is shown on a sectional drawing? 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? no one.