NEC Code Questions Practice Test20
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Question 1 of 9
1. Question
1 pointsWhat is the maximum voltage drop that is recommended by NEC for branch conductor and feeder conductor?
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Question 2 of 9
2. Question
1 pointsWhat is the minimum load that is required for exterior sign or outline lightening for a commercial occupancy as per NEC?
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Refer NEC 220.14 (F)
The required load = 12,000 VA

Question 3 of 9
3. Question
1 pointsA cord and plug device used as disconnecting means for a motor must be rated for ………………
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Refer : NEC 430.109 (F)
The attachment plug for a motor should have a horsepower rating no less than the motor rating.

Question 4 of 9
4. Question
1 pointsA 2400 volts motor disconnecting means must be capable of being locked in the …………………
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Refer : NEC 430.227

Question 5 of 9
5. Question
1 pointsIf the branch circuit rating more than …………….., the lamp holders connected to it should be of the heavy duty type.
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Refer: NEC 210.21(A)

Question 6 of 9
6. Question
1 pointsAll 15 or 20 amperes receptacle outlets installed in bathrooms of dwelling units must always require ………………………..
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Refer : NEC 210.8 (A)(1)

Question 7 of 9
7. Question
1 pointsHow much power consumed by 240 volts circuit that draws 30 amperes current?
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Power p = V * I
= 240 * 30 = 7200 watts = 7.2 KW

Question 8 of 9
8. Question
1 pointsFor conductors supplying portable signs in a dry location what is the maximum length in feet allowed?
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Refer : NEC 600.10 (D)(2)

Question 9 of 9
9. Question
1 pointsFor a commercial kitchen with two electrical equipment, what demand factor is allowed?
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Refer : NEC Table 220.56