• Provide compatible Load Switches or Packs .
• Provide a minimum of 12 pre-wired switch positions as indicated.
• Provide a load switch is to be of a repairable, modular type construction.
• Provide a minimum of four flash transfer relays.
• Operational Features: Provide LED indicators to display operation. Isolate signal load from load switch input using optic couplers. Furnish a minimum of one load switch for each of the following active controller unit functions:
ͦ Vehicle Phase. ͦ Overlapping Vehicle Phase. ͦ Pedestrian Phase.
2.f Cabinet. Furnish a weatherproof controller cabinet, large enough to suitably house the traffic signal controller unit and auxiliary equipment, and conforming to the following requirements:
2.f.1 Enclosure.
• Material . Sheet or cast aluminum.
• Wall Thickness . 1/8-inch minimum, reinforced where required.
• Minimum Size . As indicated and as follows:
Position equipment in the cabinet to provide access to all terminal strips and equipment from the front without removing other equipment. Provide an unobstructed view of all equipment having visual indicators. Place all equipment in an upright position and not on top of other equipment.
Provide Department approved Type 2070 controller cabinet with adequate room for all necessary equipment and cable. Provide a stainless steel 5/8 -inch handle designed for the door(s) and a full height, continuously welded, piano hinge. Continuously weld all joints of the cabinet. Provide a pull -out shelf to double as a storage container for wiring diagrams, approved plans, and timing sheets.
Provide a twist lock receptacle and transfer switch for power provided by an emergency generator during power outages. Access to the twist lock receptacle and the transfer switch through the use of a locked police door using a No. 2 key or standard police key.
Provide generator adaptor kit as specified in Section 954.2(i).
The latching mechanism will be a three -point draw roller. Equip the large cabinet door with a spring lock, which can be opened only by a key. Equip the smaller compartment door with a similar spring lock, which can be opened only by a standard police box key.
An approved plug -in hand control is required in all cabinets and a method to switch the signal controller from automatic to manual control.
• Type I Cabinet Extension . Provide cabinet with a base extension of not less than 18 -inches nor more than 36 -inches or as indicated. If an Uninterruptible Power Supply is to be provided include a shelf for the Uninterruptible Power Supply unit and associated batteries.
• Auxiliary Cabinet . At locations where traffic signal equipment is to be installed in an existing