Locale Disconnect switch

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RonaldM

Member
Location
San Diego, Ca
I'm installing a 75KVA transformer, 480 Delta to 120/208 Wye, is there a requirement for a locale (Same Room) disconnect switch or breaker.
This installation is being fed form a power panel in an adjoining hallway.
I found several referances to disconnects for motors but very little dealing with transformers.
 

iwire

Moderator
Staff member
Location
Massachusetts
You do not have to have a primary side disconnect, you will likely have to protect the secondary conductors within 10'.
 
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