General Requirements for Wiring Methods and Materials Practice Test 2025 – Your All-in-One Guide to Exam Success!

When portions of a cable raceway are subjected to different temperatures, it is important to prevent air circulation to minimize thermal-related issues such as condensation, which can lead to corrosion, insulation degradation, or other electrical problems. Installing either a raceway or a sleeve can effectively mitigate this air movement.

A raceway serves as a protective enclosure for electrical wiring and can be designed to minimize air gaps that might allow circulation between sections experiencing temperature differentials. Using a sleeve enhances this effect by creating a barrier between the different temperature zones, effectively isolating the segments and preventing warm air from mixing with cooler air.

Both options contribute to minimizing the risk related to temperature fluctuations, making their usage appropriate in scenarios where temperature management is critical. The answer reflects the most comprehensive approach by allowing for either solution to address the fundamental concern.