feeder and tranformer calcaulation

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danton

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Location
dallas texas
Hi someone please help
I try to get services for that shop we have:
Power supplies is 277/480 distance is 550 ft
primary load:
RTU1 18 KW 480 3 PHASE
WATER HEATER 54 KW 480 3 PHASE
secondary load;
45 recess light 40 watt each
30 receptacles 180 va each
residential dryer 220 volt
RTU2 12 KW 208 VOLT 3 PHASE
storage water tank 3000 watt 208 volt 3phase
i need to figure what size of tranformer i need to used and what size for wire i need to pull
thanks
 
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