IEC YEAR 1 COMPREHENSIVE EXAM 2026 QUESTIONS WITH SOLUTIONS GRADED A+

IEC YEAR 1 COMPREHENSIVE EXAM 2026
QUESTIONS WITH SOLUTIONS GRADED A+

◉ Refer to Figure 128.202. ___ volts are applied across the water heater
element.
Select one:


a.
120


b.
240


c.
0


d.
480. Answer: 240


◉ Circuits 7 and 9 share a neutral. This is a multiwire branch circuit. If
Ckt. 7 is drawing 13 amps and Ckt. 9 is drawing 16 amps, how much
current is flowing in the neutral?

,Select one:


a.
3


b.
13


c.
29


d.
16. Answer: 3


◉ The Code reference that specifies the type of disconnecting means
(circuit breaker for example) that can be used on a multiwire branch
circuit that feeds devices mounted on the same yoke [a stack switch or a
duplex receptacle for example] is ___.
Note: Select N/A (not applicable) if there is not an NEC® requirement.


Select one:

,a.
Article 100


b.
240.15(B)(1)


c.
404.8(A)


d.
N/A. Answer: 240.15(B)(1)


◉ Voltmeters are connected in ___ with the load when used to measure
voltage across a load in a circuit.


Select one:


a.
parallel


b.
series. Answer: Parallel

, ◉ The neutral has been broken in the circuit shown in Figure 128.418.
The current through Lamp F (IF) with the neutral opened is ___ amps.
Select one:


a.
6


b.
1


c.
2


d.
8


e.
3. Answer: 1


◉ Refer to Figure 128.523. Each battery puts out 12 volts. The voltage
applied to the load is ___ volts.