What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?

Question

Physics

Roy Trujillo

31 October, 13:32

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?

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Answers (1)

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London · Answer 1

325 inches-pounds

Explanation:

Tightening technique guide suggests that;

4/0 kcmil - --requires---→250 in-pounds tightening torque with 500 split-bolt

250kcmil - --requires---→325 in-pounds tightening torque with 650 split-bolt

300kcmil - --requires---→325 in-pounds tightening torque with 650 split-bolt

350kcmil - --requires---→325 in-pounds tightening torque with 650 split-bolt

400kcmil - --requires---→325 in-pounds tightening torque with 825 split-bolt