ASCO A300 1000-1600 Ampere Transfer Switches
Composite Outline and General Notes
This document provides a composite outline and general specifications for ASCO A300 series 1000-1600 Ampere Transfer Switches, focusing on the Type 4 enclosure.
General Notes
- Type 4 enclosure. Free standing. Floor mounted. 12 gauge formed frame construction.
- NEC standard gauge pan type door with lockable handle.
- Finish: ANSI #61 Grey Polyester Powder. UL Recognized.
- Construction is in accordance with applicable requirements of UL 891.
- Recommended Clearances: Front: 40 inches.
- A 20% rated ground bus 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.
Enclosure Views and Dimensions
Top View
Shows the top of the enclosure with a conduit area measuring 42.0 x 18.0 inches.
Front View with Door
Depicts the front of the enclosure. Features include a door with a continuous hinge, user controls and indicators (membrane panel) located towards the top, and a terminal block (TB) for field connections mounted on the front of the transfer switch (TS). Dimensions: Height 87.00 inches, Width 48.00 inches.
Left Side View
Shows the side profile of the enclosure. Dimensions: Depth 23.00 inches.
Bottom View
Illustrates the bottom of the enclosure. Includes four mounting holes (⌀0.562 inches diameter) and dimensions: Length 46.00 inches, with 1.00-inch offsets from the ends and a 2.00-inch height for the base structure.
Cabling Notes
| SIZE | CABLE ACCOMMODATIONS (PER PHASE & NEUTRAL) |
|---|---|
| 1000-1200 | SCREW TYPE (STANDARD) - (4) 1/0 ⌀ 750 MCM AL/CU |
| 1600 | SCREW TYPE (STANDARD) - (6) 1/0 ⌀ 750 MCM AL/CU |
(See Note 'E' below)
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 four (4) 750MCM 1/0 CU/AL cable (see Note "E" below).
- A. Lug Material: Aluminum Alloy 6061-T6 with electro tin plated finish.
- B. Screw Material: Aluminum Alloy 6262-T9 with electro tin plated finish.
- 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.
