What is true about the LL or LR type conduit bodies?

The correct answer highlights that LL or LR type conduit bodies have covers specifically designed for the left or right side. This design is essential for providing access to the conductors within the conduit while also allowing for proper directional changes in the wiring system. In the case of LL (long left) and LR (long right) conduit bodies, the elongated shape facilitates wiring pathways that change direction while ensuring that there are covers to protect and access the conductors.

The design enables installers to configure wiring in a way that maximizes functionality and minimizes the risk of damage to wires. The choice of covers only on one side allows for better adaptability in various installation scenarios, accommodating specific routing needs.

The other options do not accurately represent the characteristics of LL or LR type conduit bodies. For instance, while some conduit bodies may facilitate directional changes, the specific function of allowing for 90-degree angles is more accurately attributed to other types of conduit bodies. Similarly, the claim about connecting three conduits is characteristic of different types of junction boxes rather than LL or LR types. The description of having covers on both sides does not pertain to these specific conduit bodies either, as their design focuses on providing access from one side.