Master Electrician Practice Exam

What is the minimum size of conductors supplying outlets for arc and xenon motion picture projectors of the professional type?

1. 10 AWG

2. 8 AWG

3. 6 AWG

4. 12 AWG

The correct answer is: 8 AWG

The minimum size of conductors supplying outlets for arc and xenon motion picture projectors of the professional type is 8 AWG. This size conductor is necessary due to the high current demands that these projectors typically require. Arc and xenon projectors often operate at elevated power levels, which can lead to significant heat generation in the conductors. Using proper conductor sizing is vital to ensure that the wiring can safely handle the electrical load without overheating. Additionally, an appropriately sized conductor helps prevent voltage drop, which could adversely affect the performance of the projector. The National Electrical Code (NEC) provides guidelines indicating the need for larger conductor sizes based on the application and equipment load. In this case, 8 AWG is a suitable choice to ensure safe and efficient operation of professional-grade projectors.