LEVEL 4 MODULE 1 HIGHLIGHTS EXAM QUESTIONS

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LEVEL 4 MODULE 1 HIGHLIGHTS EXAM QUESTIONS

Actual Qs and Ans - Expert-Verified Explanation -Guaranteed passing score -21 Questions and Answers

-Format: Multiple-choice / Flashcard

Question 1: NEC section 220.61(B) allows a demand factor of

Answer:

70% for these two appliances.Question 2: Additional demand factors may be applied to the portion of the neutral load contributed by

Answer:

Electric ranges and the portion of the total neutral load greater than 200A.Question 3: If the number of current carrying conductors in the conduit or cable exceeds 3,

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The ampacity of the conductors must be adjusted using NEC 310.15(C)(1).Question 4: NEC section 220.44 permits both general purpose receptacles at 180VA per outlet and

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Fixed multi outlet assemblies to be adjusted for the demand factors given in NEC tables 220.42 and

220.44.

Question 5: Since the requirement for adding at least the first 60A of a load at the 100% demand factor is satisfied,

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The next 60A of the 87.5A from all the other loads are added at a 50%.

Question 6: The clothes dryer and electric range, however have

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120V lights that will unbalance the current between phases.Question 7: The demand factor does not apply to any area where the entire lighting is likely to be

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Used at one time, such as the dining room or a ballroom.

Question 8: For two or more motors connected to the same feeder conductors ,

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The rule is to compute the sum of all motors plus 25% of the largest motor.

Question 9: First 20,000 at

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60%.Question 10: Add 100% of the noncontinous loads and 125% of the continuous loads,

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then divide the result by the circuit voltage to find the current rating.

Question 11: Almost all secondary sides of transformers

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Are classified as tap conductors.Question 12: Use of the 100 foot tap rule is limited to installations in high bay manufacturing buildings with

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Wall heights over 35 feet.

Question 13: More than 6 units of kitchen equipment

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With a total connected load of 80kVA.

Question 14: Compute the floor area of the building using the

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Outside dimensions of the building.Question 15: NEC section 220.43(A) requires that the lighting load for show window feeders be calculated at

Answer:

200VA per linear foot of show window.Question 16: Feeder amapacity for single phase circuits is calculated by dividing VA by the circuit voltage.

Answer:

I = VA/V

Question 17: When the overcurrent protection for a conductor is located at the load end instead of at the supply conductor,

Answer:

The NEC generally considers that to be a tap.

Question 18: A dwelling unit has a unit lighting load

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Of 3VA per square foot.Question 19: The smallest sized locking and grounding type receptacle that may be used to provide shore power for boats is

Answer:

30A.

Question 20: Determine the general lighting load using NEC section 220.14(J)

Answer:

Multiply the resulting area in step 1 by the unit load for the dwelling unit.

Question 21: Feeder ampacity for balanced three phase circuits is calculated by diving VA by the product of the line to line circuit voltage and the square root of 3 (1.732)

Answer:

I = VA over V multiplied by 1.732.