For each elevator or group of elevators, an output is required for recall to the designated level. A second circuit is required for recall to the alternate level, and a third circuit for the elevator warning signal. If the elevators were all served by different hoistways/machine rooms, what would be true about circuits?

For each elevator or group of elevators, an output is required for recall to the designated level. A second circuit is required for recall to the alternate level, and a third circuit for the elevator warning signal. If the elevators were all served by different hoistways/machine rooms, what would be true about circuits?

• A. Additional circuits would be required for recall and warning
• B. No additional circuits beyond a single group
• C. Only two circuits are required
• D. No circuits are needed for recall

Answer: (A)

Circuits for recall and warning must be organized by elevator group. Each group of elevators needs its own outputs for recall to the designated level, recall to the alternate level, and the elevator warning signal. When elevators are in separate hoistways or machine rooms, they don’t share circuits, so you can’t rely on a single set of wires to serve all of them. Instead, you must provide an additional, independent circuit set for each separate group. That’s why extra circuits would be required for recall and warning in this scenario.

Circuits for recall and warning must be organized by elevator group. Each group of elevators needs its own outputs for recall to the designated level, recall to the alternate level, and the elevator warning signal. When elevators are in separate hoistways or machine rooms, they don’t share circuits, so you can’t rely on a single set of wires to serve all of them. Instead, you must provide an additional, independent circuit set for each separate group. That’s why extra circuits would be required for recall and warning in this scenario.