N0311 - Ground Plate Installation on Splice Vault or Future Padmount Switchgear Vault
Revision 6
Jul 30, 2013
| Compatible Unit | Item | Description | Qty | Mid |
|---|---|---|---|---|
| N0311 | A | Washer, SS Rd 1-¼” Flat 9∕16” Hole | 8 | 191627 |
| B | Connector, C-Crimp Cu 3/0-4/0 to 3/0-4/0 | 1 | 211540 | |
| C | Nut, Unistrut ½" | 8 | 761082 | |
| D | Wire, 4/0 Cu Bare SD 19-Str | 35' | 847907 | |
| E | Wire, 1/0 Cu Bare MHD 7-Str | 60' | 847923 | |
| F | Plate, Cu Ground 144 in2 | 4 | 1001807 | |
| G | Connector, C-Crimp Cu 3/0-4/0 to 1/0-2/0 | 2 | 1003001 | |
| H | Clamp, Equip Ground Cu #3 Sol-4/0 Str | 8 | 1003311 |
Notes:
- Use 4/0 copper for ground loop inside vault. Use 1/0 copper for connecting ground plates to 4/0 copper ground loop.
- Ground plate must be installed a minimum of 5’ deep to be considered a made electrode suitable for grounding equipment such as transformers and j-boxes. Cover plate with tamped select backfill. If vault is to be backfilled with gravel or sand bury plate below backfill or install 5/8” ground rod(s) per Compatible Unit N0321.
- Ground plates are preferred for grounding during vault installation. Use ground rods for grounding vaults already set and backfilled. Refer to Compatible Units N0320 - N0321.