What is suggested for the installation of cables passing through raceways to avoid heat issues?

For the installation of cables passing through raceways, ensuring proper spacing for heat dissipation is crucial to avoid overheating issues. When cables are installed too closely together, they can trap heat, leading to elevated temperatures that may compromise the integrity of the cables and pose a fire risk. Adequate spacing allows for air circulation around the cables, facilitating heat dissipation and maintaining safer operating temperatures.

In raceway installations, it's important to adhere to NEC guidelines regarding fill density. These guidelines often specify maximum fill percentages to prevent excessive accumulation of heat. Proper spacing helps not only to comply with these standards but also contributes to the longevity and performance of the cables.

Other options, while they may seem reasonable, do not directly address the issue of heat dissipation in the same way. Limiting the number of cables could reduce heat generation overall but may not always be a practical or necessary solution. Insulating all cables could impede their ability to cool down, leading to heightened temperatures within the raceway. Twisting cables together could also increase heat retention rather than promote dissipation. Therefore, ensuring proper spacing is indeed the best practice for managing heat issues in raceway installations.