Guide-13 Concrete Pad Specification for 3 PH Transformer Installations 500 kVa -2000 kVA Guide-13 Concrete Pad Specification for 3 PH Transformer Installations 500 kVa -2000 kVA user.72018-09-18T13:45:48-06:00September 18th, 2018| Share This Story, Choose Your Platform! FacebookTwitterLinkedInEmail