Where are spreaders utilized in an elevator system?

Spreaders are utilized between brackets on counterweight rails in an elevator system to maintain the proper alignment and stability of the counterweights as they move in relation to the elevator car. The role of spreaders is crucial because they help prevent the counterweights from twisting or bumping against the rails, ensuring smooth operation and reducing wear on the components. This alignment contributes to the overall safety and efficiency of the elevator system, as it facilitates consistent movement and prevents potential mechanical failures related to misalignment.

The other options refer to locations where components are present but do not align with the specific function of spreaders in maintaining counterweight alignment. Therefore, the specific placement of spreaders ensures that the counterweight system operates effectively and reliably, enhancing the overall performance of the elevator.