Using a 480 three phase breaker to power a 2 phase transformer
- Thread starter searlest
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fmtjfw
Senior Member
- Location
- Fairmont, WV, USA
What is a two phase transformer?
If the breaker is listed for the panel, leaving a pole or two vacant is not a problem.
If the breaker is listed for the panel, leaving a pole or two vacant is not a problem.
- Location
- Placerville, CA, USA
- Occupation
- Retired PV System Designer
When you say a 2 phase transformer do you really mean a single phase transformer connected line-to-line?
If so, then using a three phase breaker is just fine. Do not connect anything to the third output.
Tapatalk!
If so, then using a three phase breaker is just fine. Do not connect anything to the third output.
Tapatalk!
- Location
- San Francisco Bay Area, CA, USA
- Occupation
- Electrical Engineer
What we call Line to Line single phase, as in two-out-of-three phases, people from outside of North America call "2 phase". For them, there is no other possibility of "two phase" power as there is here in the US.
No, there is usually no problem with using a 3 pole breaker as a 2 pole breaker. But the real final answer must come from your breaker mfr.
No, there is usually no problem with using a 3 pole breaker as a 2 pole breaker. But the real final answer must come from your breaker mfr.
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