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A 400 amp 3Φ 347/600V load is being fed from a 500KVA pad mounted transformer. The...

A 400 amp 3Φ 347/600V load is being fed from a 500KVA pad mounted transformer. The load is non-continuous. It has been decided to run 2 copper conductors per phase to feed the service. The conductors will be buried in separate conduits (i.e. 1 conductor in each conduit). What diagram is used to determine proper installation (depth, spacing)? What is the ampacity and size of the cables? Which table did you use to find this answer?

engineering   Electrical-Engineering   
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Answer #1

Transformer reading 550 kVN, 3-0, 400 mp 341 6oov SOUTDO = 831.91 Amp primary side current √3 x 347 2 832 A the transformer w

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