When angle or U pulls are made, the distance between each raceway entry and the opposite wall must not be less than __________ times the trade size of the largest raceway for conductors 4 AWG or larger.

The correct answer is based on industry standards for ensuring proper spacing in conduit installations. Specifically, when angle or U pulls are made in raceways, it is essential to follow the guidelines to avoid issues related to conductor handling and to maintain effective electrical performance.

For conductors that are 4 AWG or larger, the requirement stipulates that the distance between each raceway entry and the opposite wall should be no less than 6 times the trade size of the largest raceway. This measurement is vital as it provides sufficient room for the conductors to bend without causing stress or damage. Proper spacing also helps in the maintenance of good installation practices, allowing for easier access and reducing the chances of overheating due to restricted air flow around the raceways.

Using a lesser factor would increase the risk of difficulty during installation and potential future maintenance issues, while a larger factor may unnecessarily limit usable space or increase costs. Therefore, adhering to this standard ensures both safety and efficiency in installation practices related to larger conductors.