Fill in the blanks with the appropriate answer.
When installing a transformer (such as a 75kVA unit), the disconnecting means for this piece of equipment shall be _________, and the location of the disconnecting means shall be ______ marked on the transformer.
A. approved / properly
B. lockable / field
C. suitable / suitability
D. lockable / factory
As noted in 450.14 of the 2011 NEC, "Transformers, other than Class 2 or Class 3 transformers, shall have a disconnecting means located within sight of the transformer or in a remote location. Where located in a remote location, the disconnecting means shall be lockable, and the location shall be field marked on the transformers."
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