For lighting circuits in traveling cables for elevators, copper conductors must be run in parallel if sized at ________ or larger.

The requirement for copper conductors in lighting circuits for traveling cables in elevators stipulates that they must be run in parallel if sized at 20 AWG or larger. This practice is crucial for ensuring that the conductors can handle the required current without overheating and to maintain circuit integrity, especially in applications like elevators where safety and reliability are paramount.

When copper conductors are run in parallel, it allows for a reduction in the resistance of the circuit, which can improve efficiency and minimize voltage drop. Additionally, by using multiple conductors, the electrical load can be better distributed, which enhances performance and reduces wear on the individual conductors.

In this context, the sizing of 20 AWG or larger is significant because it ensures that the conductors are sufficiently robust to handle the demands of the lighting circuit while also allowing for the parallel configuration, which is a standard safety practice in electrical installations, particularly in specialized applications like elevators.