ASCO 300 Series 1600-2000 Ampere Transfer Switches: Composite Outline

General Notes

Type 1 enclosure, free standing, floor mounted, 12 gauge formed frame construction.
NEC standard gauge pan type door with lockable handle.
Finish: ASA 61 Gray, polyester powder. UL recognized.
Construction in accordance with applicable requirements of UL 891.
Recommended clearances: Front: 36 inches.
A 20% rated ground bus is provided.
Unit is designed for combination top and bottom cable entry. The switch configuration is for top entry emergency & load and bottom entry normal.
Important Note: Under no circumstances should power cables be routed along the sides of the transfer switch. An optional cable pull box which mounts on the left side of the enclosure is available when conditions exist for which cables must run between the top and bottom of the unit. Ground conductors only may be run along the left sidewall of the enclosure.
Solid (copper bus) neutral is provided standard. A neutral switching pole is optional.
No knockouts are provided. Contact factory for details. Shipped separately.
Center of gravity (CG) information is indicated.
A vented door must be provided for 2000 Amp transfer switch.

Cabling Notes

Supplied with mechanical (screw type) lugs on the Normal, Emergency & Load bus stabs.
One (1) lug per phase and neutral, each suitable for connection of six (6) 1/0-750MCM CU/AL cable (see note "E" below).
A. Lug material: Aluminum alloy 6061-T6 with electro tin plated finish.
B. Screw material: Aluminum alloy 5262-19 with electro tin plated finish.
C. UL listed, CSA certified.
D. Lug screw tightening torque per UL 486B: 19 ft-lbs.
E. Suitable wire bending space is provided for up to six (6) 600MCM cables per terminal per Table 373-6(b) of NFPA 70 of the NEC.

Outline Views and Dimensions

This section describes the physical layout and key dimensions of the ASCO 300 Series Transfer Switches.

Top View

The top view indicates a conduit area measuring 32.0 x 18.0. This conduit area is required for 2000 Ampere transfer switches only.

Left Side View

The left side view shows the overall height of the unit at 87.00. It features two conduit areas, each measuring 15.0 x 15.0. These areas are designated as access plates for an optional cable pull box.

Front View

The front view illustrates the main enclosure. It includes a control and indicator panel, typically a membrane panel, and a terminal block (TB) mounted on the front for field connections. A separate depiction shows the front view with the door removed, providing a view of the internal components and wiring.

Right Side View

The right side view provides similar dimensional information to the left side view, indicating conduit entry points and overall enclosure dimensions.

Bottom View

The bottom view shows a conduit area measuring 32.0 x 18.0.

Section A-A

This cross-section view details the internal wiring. It highlights terminal blocks and lugs on the bus stabs, designed to accommodate multiple cable connections, specifically up to six 1/0-750MCM CU/AL cables per phase and neutral.

Manufacturing and Revision Information

Property of Automatic Switch Company. Use permitted for our work only. All rights of design or invention are reserved.

Drawing Number: DS 605695-008 Sheet 1 of 1

Project Name: 151440 VT

Date Issued: 5/20/99

Revision History:

SEE ECN 150341 YZ 1/6/99 - ISSUED
FINAL YZ 1/99

Drawn By: YZ

Checked By: [Name not specified in OCR]

Approval: [Name not specified in OCR]

Manufacturing Tolerances: In accordance with THACO P 1-003.

Scale: 1:10

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