MAster12
Member
- Location
- Boston, MA, US
Does anyone see a problem with installing a SINGLE PHASE transformer (480V primary 120/240V secondary) fed from a 2-pole breaker from a 3-phase panel?
Single Phase 480 - 120/240V Transformer
- Thread starter MAster12
- Start date
- Status
- Location
- San Francisco Bay Area, CA, USA
- Occupation
- Electrical Engineer
No, no problem at all. In fact, how else would you do it?
- Location
- New Jersey
- Occupation
- Journeyman Electrician
soundcolor
New member
- Location
- Newberry, south Carolina, usa
Depends on the supply voltage I suppose.
- Location
- New Jersey
- Occupation
- Journeyman Electrician
I think that what Jraef is saying is that if the primary is 1Ø, 480 volts you don't have much of a choice but to use a 2 pole breaker in the 3Ø panel.
kwired
Electron manager
- Location
- NE Nebraska
- Occupation
- EC
You can use a three pole breaker but you ultimately only utilize two lines from the source.
- Location
- New Jersey
- Occupation
- Journeyman Electrician
You can use a three pole breaker but you ultimately only utilize two lines from the source.
Very true but the OP did specifically ask about a 2 pole. I'm guessing that maybe he's concerned about an imbalance of some kind.
kwired
Electron manager
- Location
- NE Nebraska
- Occupation
- EC
Which is unavoidable other than to compensate by balancing any other single phase loads accordingly if possible.
- Status