SECTION 1
ASCO 7000 Series Automatic
Remove the Shipping Skid (large ACTSs)
For large ACTSs, open the front door and remove the four lag screws (2 in front, 2 in rear) securing enclosure to the wood skid.
Supporting Foundation
The supporting foundation for the enclosure must be level and straight. Refer to the applicable enclosure outline drawing included with the switch for all mounting details including door opening space.
If bottom cable entry is used, the foundation must be prepared so that the conduit stubs are located correctly. Refer to the enclosure outline drawing for specified area and location. Provide cable bending space and clearance to live metal parts. When a concrete floor is poured, use interlocking conduit spacer caps or a wood or metal template to maintain proper conduit alignment.
Mounting
Refer to the applicable enclosure outline drawing fur- nished with this switch and mount the automatic transfer switch according to details and instructions shown on diagram.
Line Connections
Refer to the Wiring Diagram provided with the switch. All wiring must be made in accordance with the National Electrical Code and local codes.
It is unnecessary to remove pole covers from the transfer switch. If you do remove them, reinstall them carefully.
INSTALLATION
Testing Power Conductors
Do not connect the power conductors to the transfer switch until they are tested. Installing power cables in conduit, cable troughs and
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Protect the automatic transfer switch from construction grit and metal chips to prevent malfunction or shortened life of the ATS.
Connecting Power Conductors
After the power cables have been tested, connect them to the appropriate terminal lugs on the transfer switch as shown on the wiring diagram provided with the switch. Make sure the lugs provided are suitable for use with the cables being installed. Standard terminal lugs are solder- less screw type and will accept the wire sizes listed on the drawings provided with the switch. Be careful when stripping insulation from the cables; avoid nicking or ringing the conductor. Remove surface oxides from cables by cleaning with a wire brush. When aluminum cable is used, apply joint compound to conductors. Tighten cable lugs to the torque specified on rating label.
Controller Ground
A grounding wire must be connected to the controller’s lower left mounting stud. Because the controller is mounted on the enclosure door, a conductive strap must be used between the enclosure and the door. This connection provides proper grounding which does not rely upon the door hinges.
Harnesses
The transfer switch is connected to the left side of the controller by a