Cable Connection Torque Values
Main Lug Compartment Torque Connection
Connection Torque Values for Main Lug Compartments and Connection Torque Values for Main and Branch Feeders provide main disconnect and branch feeder torque values, which apply to both aluminum and copper conductors.
Connection Torque Values for Main Lug Compartments*
|
Socket Size Across Flat |
Torque |
|---|---|
|
3/8 in. |
375 lb-in (42.4 N•m) |
|
1/2 in. |
500 lb-in (55.6 N•m)for 800–1200 A, bottom main lug compartments |
|
600 lb-in (67.8 N•m)for all others |
Connection Torque Values for Main and Branch Feeders
| Frame Size | Ampere Rating | Torque |
|---|---|---|
| B | 15–125 A | 44 lb-in (5.0 N•m) for #14 - #8Q80 lb-in (9.0 N•m) for #6 - #3/0 |
| H | 15–30 A | 50 lb-in (5.6 N•m) |
| 35–150 A | 120 lb-in (13.6 N•m) | |
| J | 150–250 A | 225 lb-in (25.4 N•m) |
| FA | 15–30 A | 35 lb-in (3.9 N•m) |
| 35–100 A | 80 lb-in (9.0 N•m) | |
| FC | 20–30 A | 35 lb-in (4.0 N•m) |
| 40–100 A | 65 lb-in (7.3 N•m) | |
| KA | 70–250 A | 250 lb-in (28.2 N•m) |
| KC | 110–250 A | 250 lb-in (28.2 N•m) |
| LA/LH | 125–400 A | 200 lb-in (22.6 N•m) |
| LC/LI/LE/LX/LXI | 300–600 A | 300 lb-in (33.9 N•m) |
| LG/LH/LL/LR | 300–600 A | 442 lb-in (50 N•m) |
| MA/MH/ME/MX | 200–400 A | 300 lb-in (33.9 N•m) |
| 450–1000 A | 300 lb-in (33.9 N•m) | |
| NT | 400–1200 A | 600 lb-in (67.8 N•m) |
| NW | 400–3200 A | 600 lb-in (67.8 N•m) |
| PA/PH/PE/PX | 800–2000 A | 600 lb-in (67.8 N•m) |
| MJ/MG | 300–800 A | 450 lb-in (50.8 N•m) |
| PJ/PK/PG/PL | 250–1200 A | 450 lb-in (50.8 N•m) |
| RJ/RK/RG/RL | 600–2500 A | 500 lb-in (56.5 N•m) |