Seismic Tie-Down Access for ArcBlok with Bottom-Feed, Line-Side, Isolation Cable Vault

The front cover and rear panel assembly of each ArcBlok bottomfeed cable vault are removable to allow access to seismic tie-down points. Refer to Front Cover and Rear Panel of Cable Vault, and to Type 1, Type 1 Gasketed, Type 1 Sprinkler Resistant, and Type 12 Seismic Tie Down Locations.

1. Remove and retain the 3/8-16 Keps nuts securing the cable vault front cover.

2. Remove the cable vault front cover.

3. Remove and retain the 3/8-16 Keps nuts securing the cable vault rear panel.

4. Remove the rear panel from the inside of the cable vault.

5. Install the seismic hardware.

6. Reinstall the rear panel and front cover using the 3/8-16 Keps nuts retained in steps 1 and 3.

Front Cover and Rear Panel of Cable Vault

Type 1, Type 1 Gasketed, Type 1 Sprinkler Resistant, and Type 12 Seismic Tie Down Locations
15 in. (381 mm) Section Dimensions Letter Section Width Dimension A N/A 5.00 in. (127 mm) B N/A 15.00 in. (381 mm) C 20.00 in. (508 mm) 10.00 in. (254 mm) 25.00 in. (635 mm) 15.00 in. (381 mm) 30.00 in. (762 mm) 20.00 in. (508 mm) 35.00 in. (889 mm) 25.00 in. (635 mm) D N/A 9.98 in. (253 mm) E N/A 2.50 in. (64 mm) N/A = Not applicable	20 in. (508 mm) Section Dimensions Letter Section Width Dimension A N/A 5.00 in. (127 mm) B N/A 20.00 in. (508 mm) C 20.00 in. (508 mm) 10.00 in. (254 mm) 25.00 in. (635 mm) 15.00 in. (381 mm) 30.00 in. (762 mm) 20.00 in. (508 mm) 35.00 in. (889 mm) 25.00 in. (635 mm) 44.00 in. (1118 mm) 34.00 in. (864 mm) D N/A 14.98 in. (380 mm) E N/A 2.50 in. (64 mm) F 44.00 in. (1118 mm) 17.00 in. (432 mm) N/A = Not applicable
NOTE: The dimensions shown are tie-down locations within individual MCC sections. Refer to factory supplied drawings to determine appropriate anchor locations for the equipment pad.

Seismic Tie-Down Locations for 18-Pulse AC Drive MCC Sections

A

Structure anchoring locations (typical of 6)

Type 3R Seismic Tie-Down Locations
15 in. (381 mm) Section Dimensions Letter Section Width Dimension A N/A 5.00 in. (127 mm) B N/A 15.00 in. (381 mm) C 20.00 in. (508 mm) 10.00 in. (254 mm) 25.00 in. (635 mm) 15.00 in. (381 mm) 30.00 in. (762 mm) 20.00 in. (508 mm) 35.00 in. (889 mm) 25.00 in. (635 mm) D N/A 9.98 in. (253 mm) E N/A 11.60 in. (295 mm) F N/A 12.50 in. (318 mm) G N/A 5.00 in. (127 mm) H N/A 3.60 in. (91 mm) N/A = Not applicable	20 in. (508 mm) Section Dimensions Letter Section Width Dimension A N/A 5.00 in. (127 mm) B N/A 20.00 in. (508 mm) C 20.00 in. (508 mm) 10.00 in. (254 mm) 25.00 in. (635 mm) 15.00 in. (381 mm) 30.00 in. (762 mm) 20.00 in. (508 mm) 35.00 in. (889 mm) 25.00 in. (635 mm) D N/A 14.98 in. (380 mm) E N/A 11.60 in. (295 mm) F N/A 12.50 in. (318 mm) G N/A 5.00 in. (127 mm) H N/A 3.60 in. (91 mm) N/A = Not applicable
NOTE: The dimensions shown are tie-down locations within individual MCC sections. Refer to factory supplied drawings to determine appropriate anchor locations for the equipment pad.