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Docusign Envelope ID:41F63DOF-3BC8-4149-8618-1BBEEF49D6F7 Subject Schindler Elevator Modernization Proposal - LSUN-D5PJUJ Page 20 Of 31 Date 6/4/2024 13. A separate 20 amp circuit will be provided if tank heater is provided with the elevator. 14. Hxpress oil coolers / heaters need to be on a dedicated circuit. General Requirements 1. Provide sufficient space for storage of materials on site throughout the duration of the modernization. 2. Provide clear floor space to be used as a work area. 3. If not presently outfitted, each elevator lobby should be equipped with smoke detectors, which can be used to initiate automatic fire recall. Actuation from water flow sensing or the general building alarm may require special approval. 4. Paint new or modified hoistway equipment to match building aesthetics, as required. 5. Provide building signage and floor designations related to other building systems, as required. 6. Provide building corridor lighting sufficient for illumination of elevator landing sills, as required by code. Electrical Requirements 1. The permissible voltage drop for elevator feeders shall not exceed 3% between the service delivered to the building and our supply terminal. 2. All three legs of the three-phase feeder must be hot with respect to ground and balanced to each other with no more than a 5% variation between individual legs. 3. The maximum permissible voltage variation measured in the machine room under all operating conditions shall not exceed plus or minus 10% of the nominal building supply power source voltage. 4. A 20 -amp, single phase, 110VAC, dedicated circuit with a duplex receptacle for the oil heater unit. 5. FOR EMERGENCY POWER OPERATION OF ELEVATOR(S): (when required) A. Provide an emergency generator that has the same voltage characteristics as the normal power supply. It should also have the capacity to deliver sufficient power to the main line disconnect switches in the elevator machine room for operating the specified number of elevators used during an emergency at full speed and full load. B. Provide an automatic transfer switch, or switches, for transferring power from normal to emergency power and back again. 6. EMERGENCY POWER OPERATION SIGNAL - The following separate indicating signals will be required from the automatic transfer switch to the machine room communication unit for each group of elevators. A. One dry contact to close on emergency power and open on normal power. Provide two #12 AWG wires.