Transformer grounding connectors are cast of high-conductivity bronze; 1/2 in.–13 stud fits all standard EEI-NEMA distribution transformers
| Item No. | Wire Range | Wire Range (Min.) | Wire Range (Max.) | Stud Thread Size | A | B | C | |
|---|---|---|---|---|---|---|---|---|
| BTTTC2 | 2/0 str | 8 sol | 67.4 | 8.30 | 1/2-13 | 1-51/64 | 1-9/64 | 1-21/64 |
| BTTTC2P | 2/0 str | 10 sol | 67.4 | 8.30 | 1/2-13 | 1-51/64 | 1-9/64 | 1-21/64 |
| BTTTC3 | 1 str | 10 sol | 42.4 | 5.20 | 1/2-13 | 1-3/8 | 1-3/64 | 1-3/8 |
| BTTTC3P | 1 str | 8 sol | 42.4 | 5.20 | 1/2-13 | 1-3/8 | 1-3/64 | 1-3/8 |
| BTTTC4 | 1 str | 10 sol | 42.4 | 5.20 | 1/2-13 | 1-3/8 | 7/8 | 1-9/16 |
| BTTTC4P | 1 str | 10 sol | 42.4 | 5.20 | 1/2-13 | 1-3/8 | 7/8 | 1-9/16 |