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IEC YEAR 2 FINAL EXAM NEWEST 2024 -2025 ACTUAL
EXAM COMPLETE 350 QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+
What is the maximum allowable voltage between conductors on a branch circuit supplying lighting fixtures (luminaires) in a residence? - ANSWER- 120 volts
What is the minimum number of 20-ampere branch circuits for small appliances required in a residence? - ANSWER- 2
Branch circuits that serve a ___ are required to be rated at 20 amperes where installed in a house. - ANSWER- a.bathroom b.kitchen c.laundry room d.all of the above (correct)
Branch circuits are rated according to ___. - ANSWER- the ampere rating of the overcurrent device
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Refer to the Article 100 definition for continuous load in the NEC®. According to 210.19(A) the branch-circuit conductors for a continuous load shall be sized at not less than ___ of the current drawn by the load. - ANSWER- 125%
The smallest permissible wire size for branch circuit conductors supplying other than cooking appliances is ___ AWG according to the NEC®. - ANSWER- 14
When several receptacles are connected to a 20-ampere branch circuit, these receptacles are required to be rated ___. - ANSWER- 15 or 20 amperes
A ___-amp circuit breaker is the largest that can be installed on a 12 AWG copper circuit conductor. The circuit is connected to several receptacles. - ANSWER- 20
When a single receptacle is connected to a branch circuit (the circuit has no other loads), the receptacle must have an ampere rating ___ the ampere rating of the OCPD protecting the branch circuit. - ANSWER- greater than or equal to
Branch circuits are rated according to their ___. - ANSWER- overcurrent protective device rating
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The maximum permitted current rating of a portable appliance on a 30-ampere branch circuit is ___ amps. - ANSWER- 24
What is the minimum size THHN/THWN wire permitted to serve a load that will draw 47 amps? The load will operate for about 5 hours at a time. The branch-circuit OCPD is a circuit breaker that is rated for 75°C. - ANSWER- 6 AWG`
In a dwelling, a living room branch circuit with a 20-ampere rating can be loaded to a maximum of ___ amperes. -
ANSWER- 20
Fastened-in-place utilization equipment that is connected to a branch circuit with other loads shall not exceed ___ percent of the branch circuit rating. - ANSWER- 50
Along a kitchen countertop in a restaurant, the maximum spacing between receptacles is ___. - ANSWER- not specified
Receptacles in a finished basement must be installed such that no point measured horizontally along the floor line of any wall space is more than ___ feet from a receptacle outlet. -
ANSWER- 6
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Refer to Figure 108.014. This kitchen is in a house and width of the countertop where receptacle 9 is located is 13″. Is receptacle
- required by the NEC®? - ANSWER- yes
Where fixed glass panels (i.e., windows or non-sliding parts of doors) do not permit installation of wall-mounted receptacles, ___ are typically used to satisfy the receptacle spacing requirements of NEC® 210.52(A)(1) and (2). - ANSWER- floor-mounted receptacles
In a dwelling, what is the minimum width of a wall space that requires a receptacle outlet? - ANSWER- 2 feet
In a house ___ receptacles should be installed along a 15-foot long kitchen countertop per the minimum requirements in the
NEC®. - ANSWER- 4
The plan view for the kitchen countertops in a house is shown in Figure 108.013. The fewest number of receptacles that can be installed along the 7′-9″ & 7′-1″ countertops is ___. -
ANSWER- 4
A 23-foot long hallway is shown above in Figure 108.020. If this hallway is in the Mayor's house, how many wall receptacles are required by the NEC®? - ANSWER- at least one
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