IEC FIRST YEAR EXAM STUDY ACTUAL 2025/2026 WITH CORRECT ANSWERS

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IEC FIRST YEAR EXAM STUDY ACTUAL 2025/2026 QUESTIONS AND 100% CORRECT ANSWERS What is the result if the neutral wire becomes open on a multiwire circuit having unequal loads? - Answer -The load of higher resistance would overheat and probably be damaged. 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 ___. - Answer -240.15(B)(1) Refer to the panel schedule shown in Figure 128.231. If the neutral is removed from the neutral bar, ___ volts will be applied to the TV. - Answer -150 A 12/3 cable is installed from a 120/240-V, 1Ø panel and feeds a splitwired duplex receptacle. One "hot" is connected to a 20A breaker in panel space 1. The second "hot" is connected to a 20A breaker in space 3. A 16-amp load is connected to the upper receptacle and a 14-amp load is connected to the lower receptacle. Which of the following will happen if the neutral is removed from the receptacle? - Answer -Because a higher voltage will be applied, 120-volt equipment could be destroyed. Refer to Figure 129.106. With the equipment energized and the power used by the element connected at T3 & T4 is 0.3kW, the power used by the equipment (all 4 elements) ___. - Answer -is 1.2 kW - Answer - A short length of EMT is run between two panels. The ampacity values for the conductors in this EMT need not be derated, as long as the Need assistance on Online classes, Exams & Assignments? Reach out for instant help!! Full Course Assistance, Plagiarism-free Essay Writing, Research Paper, Dissertation, Discussion Posts, etc…. Confidential & Secure services. Tutors are available for all subjects! Email now at: tutorjean01@gmail.com length of the EMT does not exceed ___. - Answer -24 in. An extension ladder should extend ___ feet above the top of the building and be secured. - Answer -3ft. What is the monthly energy cost to operate a 250-watt high-pressure sodium lamp? Electricity costs $0.15 per kW-hr and the lamp will be ON for 8 hours per day. There are 30 days in a billing month. - Answer -$9.00 ___ can be described as the point of demarcation between where the serving utility ends and the premises wiring begins. - Answer -Service Point If a 60-watt lamp operates for 21 hours, the utility will bill for ___ kWh. - Answer -1.260 To minimize conductor insulation damage and arcing damage to electrical equipment during a ground fault or a short circuit, ___ should be minimized. - Answer -a. time duration of the fault Article ___ in the NEC ® covers grounding and bonding of electrical systems. - Answer -250 Self-tapping sheet metal screws (TEK screws) ___ permitted to be used to connect the equipment grounding conductor to a metal box. - Answer -are not For a 100-Amp, 120/240-V, 3W commercial service, ___ AWG copper THHN/THWN conductors are the smallest permitted for the ungrounded conductors. - Answer -3 Loads, such as heating and air conditioning, that do not operate at the same time are said to be noncoincident loads. While separate circuits must be designed to serve each load, when calculating service load only the ___ of two noncoincident loads needs to be included. Need assistance on Online classes, Exams & Assignments? Reach out for instant help!! Full Course Assistance, Plagiarism-free Essay Writing, Research Paper, Dissertation, Discussion Posts, etc…. Confidential & Secure services. Tutors are available for all subjects! Email now at: tutorjean01@gmail.com