NEC Questions Practice Test-16
0 of 8 questions completed
Take a Practice test on NEC Code Practice quiz questions – 16
You have already completed the quiz before. Hence you can not start it again.
Quiz is loading...
You must sign in or sign up to start the quiz.
You have to finish following quiz, to start this quiz:
0 of 8 questions answered correctly
Time has elapsed
You have reached 0 of 0 points, (0)
Question 1 of 8
1. Question1 points
What is the maximum voltage drop in branch conductor recommended by NEC ?Correct
Question 2 of 8
2. Question1 points
what is the minimum general lightening load required for 3500 square foot ware house as permitted by NEC ?Correct
Refer: NEC Table 220.12
minimum general lightening load = 0.2 VA/ square foot
Total minimum general lightening load = total square foot * 0.2 VA / square foot
= 3500 * 0.2 = 700 VA
Question 3 of 8
3. Question1 points
If a 20 ampere AC snap switch is used to disconnect a 1.5 HP motor what must be the maximum full load current of a motor?Correct
Refer NEC 430.109 (C)(2)
A snap switch used to disconnect a motor where full load current rating should be less than 80% of ampere rating of a switch.
Question 4 of 8
4. Question1 points
What is the maximum continuous load that can be connected to 240 volts 20 ampere branch circuit?Correct
Refer : NEC 210.20
the continuous load should have conductors rated 125% above the connected load.
The maximum permitted load = 20/1.25 = 16 amperes
Question 5 of 8
5. Question1 points
In a single family dwelling unit when four or more appliances are fastened in a place and connected to the same feeder then ……. percent demand factor can be applied in calculating total demand load.Correct
Question 6 of 8
6. Question1 points
What is the the minimum size copper wire that can be used for outside overhead wiring, if the wire carries more than 600 volts?Correct
Refer: NEC 225.6(A)(2)
If the wire carries more than 600 volts, the overhead wire size should be No. 6 AWG
Question 7 of 8
7. Question1 points
What is the maximum allowable voltage between two adjacent snap switches are receptacles placed in a enclosure?Correct
Refer : NEC 404.8(B)
Unless they are separated permanently installed barriers the voltage between them should be less than 300 volts.
Question 8 of 8
8. Question1 points
Which of the following is the smallest size fixture wire allowed?Correct
Refer : NEC 410.54 (B)
The fixture wires must not be smaller than No. 18 AWG