Which aspect of conduit installation is essential for fire safety?

Tight and sealed connections are crucial for fire safety in conduit installation because they help prevent the ingress of moisture, dust, and other contaminants that could lead to electrical failures or short circuits. Loose or poorly sealed connections can create arcing conditions, which significantly increase the risk of fire. Additionally, a sealed connection ensures that any potential sparks or heat generated within the conduit system do not escape, reducing the likelihood of igniting surrounding materials.

In contrast, while flexible conduits may offer installation advantages such as adaptability in tight spaces, they do not inherently contribute to fire safety. Installing conduits at a specific height or applying decorative coatings also does not directly impact fire safety; instead, these factors may relate more to aesthetics or structural regulations than to preventing fire hazards. Thus, maintaining tight and sealed connections stands out as the most essential practice for enhancing fire safety in electrical conduit systems.