TA450LD: Wire Size 4-4/0 (2), CU/AL conductor, Torque 275 Lb.-In. TA602LD: Wire Size 250 - 350 (2), CU/AL conductor, Torque 275 Lb.-In. TA603LD: Wire Size 400 - 500 (2), CU/AL conductor, Torque 275 Lb.-In.
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