2014 NEC Quiz

Welcome to your free 2014 NEC Quiz

1. 
What is the minimum height of a service-drop conductor over a residential driveway?

2. 
What is the maximum overcurrent protection for a 16 AWG Copper wire?

3. 
A GFCI-protected receptacle in a dwelling unit garage is required for:

4. 
What is the minimum headroom of working spaces about service equipment or motor control centers?

5. 
The disconnect for a sign in a commercial location must be within sight of the sign, or it must be:

6. 
When installing a 125V, 15A/20A receptacle on a rooftop for HVAC, what is the maximum distance it can be from the equipment?

7. 
Which of the following is NOT a recognized method for identifying an equipment grounding conductor?

8. 
What is the maximum number of 14 AWG THHN conductors permitted in a 1/2 inch Trade Size EMT?

9. 
A "Point of Entrance" for a communications cable is defined as the point at which the cable:

10. 
What is the maximum number of disconnects allowed to be grouped in one location for a single service?

11. 
A service is supplied by four sets of 500 kcmil copper conductors in parallel. What is the minimum size copper grounding electrode conductor to a metal water pipe?

12. 
What is the minimum size copper-clad aluminum service-entrance conductor for a 200-ampere, 120/240-volt, 3-wire, single-phase dwelling service?

13. 
What is the voltage drop for a 240V, 1-phase circuit using 10 AWG copper (1.2 ohms/kft) carrying 24A for 150 feet?

14. 
If you have six 8 AWG THHN copper current-carrying conductors in a single raceway in an ambient temperature of 30°C, what is the adjusted ampacity of each conductor?

15. 
A dry-type transformer is rated at 75 kVA, 480V primary to 208V secondary. What is the maximum size for the primary OCPD (standard size) if only primary protection is provided?

16. 
A continuous load on a feeder is calculated at what percentage of its value?

17. 
What is the maximum rating of a cord-and-plug-connected load to a 20-ampere branch circuit that also supplies lighting units?

18. 
A 10-HP, 208-volt, three-phase motor has a nameplate FLC of 30.2A and a service factor of 1.15. What is the maximum setting for the overload protection?

19. 
What is the maximum number of 12 AWG THHN conductors permitted in a 4-inch x 1-1/2 inch square metal box that contains no other devices or fittings?

20. 
Where a service is supplied by 500 kcmil copper conductors, what is the minimum size copper grounding electrode conductor (GEC) to a concrete-encased electrode?

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