Sizing a cable lug comes down to three numbers: conductor cross-section, strand class and stud diameter. This cable lug size chart covers 10 mm² to 630 mm², listing barrel bore, outer diameter, overall length and available hole sizes for each SC-type size. You will also learn why two cables both marked 95 mm² may need different lugs, how aluminium and bimetallic sizing differs from copper, the palm hole and bolt rules for busbar work, and the five field errors that produce loose crimps and overheating joints.