Pole mounted 3 phase transformer banks are not to exceed 300 kVA. Any 3 phase bank exceeding 300 kVA will have to be a 3 phase padmount. All overhead banks will be charged to the customer at one half (1/2) the estimated cost for transformer, metering and other equipment necessary. All padmount 3 phase transformers will be charged at full price. All charges must be paid prior to installation.