You are asked by your supervisor to witness factory tests to be performed on 15 single-phase transformers that your company plans to purchase. The 15 single-phase transformers will be used to make five three-phase banks. Each three-phase bank must supply a three-phase, 1000 kVA, 208 V load from a three-phase, 13.8 kV supply. Specify the nameplate voltage rating (HS and LS) and kVA rating of each single-phase transformer if they are to be installed in a three-phase, delta wye configuration?