NEC Commercial Electrical Practice Test

What is the minimum clearance required for amusement rides and attractions from overhead conductors operating at 600 volts or less?

1. 10 ft

2. 12 ft

3. 15 ft

4. 20 ft

The correct answer is: 15 ft

The National Electrical Code (NEC) specifies minimum clearance requirements for overhead conductors to ensure safety for both the electrical system and the public. For amusement rides and attractions, which pose unique safety considerations due to their moving parts and large vertical structures, the code requires a minimum clearance of 15 feet from overhead conductors operating at 600 volts or less. This distance is established to prevent accidental contact with live conductors, which could lead to electrocution or electrical arcing, especially when the rides are in motion or if they sway. The 15-foot clearance aligns with safeguarding public health and safety by providing ample space to prevent any interference between ride vehicles and electrical conductors, particularly considering the variability in ride height and potential movement. This clearance aims to protect both the patrons enjoying the rides and maintenance personnel who may work near the equipment. The other clearance values specified in the choices relate to different scenarios or equipment types that may be outlined in other parts of the NEC. However, for amusement rides specifically, the clear, defined distance of 15 feet is necessitated by the operational nature and safety risks associated with such installations.