According to inspection standards, the permissible vertical deviation for boxes with a height less than 50cm is 1. The positioning of entry and exit holes for cables also significantly affects quality. These Distribution Cabinets are to be outdoor type nd to be fabricated out of 2 mm GI sheet steel. The body of the boxes shall have sufficient re- enforcement with suitable size of channels keeping a provision for fixin andle conforming to general. mm (minimum) in length on cable connection side as shown in the drawings. Ga Porcelain Cutouts in 160 KVA / 315 KVA box to protect outgoing circuits. However, this height can be adjusted higher or lower appropriately for operational and maintenance convenience, provided design. The bottom edge of the distribution box is usually between 1.