Shocking personality
New User
- Location
- Colorado
- Occupation
- Tired
75 KVA 480V 3 phase primary to 120/208V 3 phase secondary transformer... Can you put the primary side on a 480v three phase 50A breaker? I believe the code lets me put it on a 125A but they want to use an existing breaker. I cant find where you are not able to use a smaller breaker, you just obviously will not get the full potential out of the transformer before it trips.. is there anything else this changes down stream? the secondary side still has a 200A main breaker panel on it. the load on the 200A panel will be about 35 amps. they went big on design and now are wanting to cut cost.