08/29/17: Motors and Transformers

Poll created by dvigstol Employee on Aug 29, 2017

A 3 phase, 75kVA, 480V to 208Y/120V, dry-type transformer is protected by a 100A, inverse-time circuit breaker on the primary side of the transformer. What is the maximum rating of the OCPD required to protect the secondary windings of the transformer?

1 total vote
  • 300A
    0
  • Secondary protection is not required
    1
    Your vote
  • 200A
    0
  • 250A
    0