Questions and answers based on the 2005 NEC. Quiz by George W. Flach, who writes the Code Q&A for Electrical Contractor magazine and is former chief electrical inspector for New Orleans.

1.	What does Article 210 cover?
2.	What is the rating of a branch circuit consisting of 8 AWG THW coper conductors having an ampacity of 50 amps and protected by a 20-amp overcurrent device?
3.	In general, would a 125-volt, single-phase, 20-amp receptacle located outside a commercial establishment, accessible to the public, be required to be protected by a ground-fault circuit interrupter? Yes No
4.	Is the auxiliary equipment of electric-discharge lamps rated for 480 volts permitted to be installed on a pole for the illumination of an athletic field? Yes No
5.	Is it permissible to install arc fault circuit interrupters (AFCI) in a location other than the origination of the branch circuit? Yes No
6.	What are the identification requirements for marking accessible ungrounded conductors where the premises wiring system has branch circuits supplied from more than one nominal voltage system?
7.	In general, what is the smallest allowable conductor permitted to supply a branch circuit for loads other than those specified in 2120.2 and 210.19(A)(3) (cooking applicances)?
8.	What are the requirements for disconnecting a multiwire branch circuit supplying more than one device or equipment on the same yoke?
9.	List the three installation provisions that must be met for a 125-volt, single-phase, 15- or 20-amp-rated receptacle outlet generally required for the servicing of heating, air conditioning, and refrigeration equipment?
10.	In general, what are the requirements for lighting outlets for guest rooms and guest suites of a hotel or motel?