U
Ulysses
- Jan 1, 1970
- 0
Hi. I've been googling and read a lot about three phase power but didn't
find the answer to my specific question...
I have a vacuum-heat press that operates on 240 VAC single phase. The plug
is a 20 amp twistlock so I'm assuming it draws less than 20 amps at that
voltage. The vacuum motor runs from 120 volts and is included in the
circuitry. I can't seem to find the wiring diagram so I'm guessing that
either one leg of the 240 supplies the pump and the other supplies the the
heating elements OR one leg supplies the pump and one heating element and
the other leg only one heating element (this seems unlikely to me).
So, I have three-phase power in my store and the voltage across any two hot
lines is about 209. BUT, the voltage between any hot line and ground or
neutral is 120 volts. SO, since I'm not going to be running any 240 volt
motors etc, and the pump is running from 120 volts anyway, can I simply
connect the vacuum-heat press to two legs of the three-phase plus neutral
and ground? As far as I can figure I will be supplying the pump and heating
elements individually with 120 anyway. Unless for some reason the heating
elements require 240 but that seems like it would be an unbalanced load with
the pump drawing only 120 from one of the lines.
The wiring diagram is somewhere and I'll consult it before doing anyway. If
this won't work what are my options?
find the answer to my specific question...
I have a vacuum-heat press that operates on 240 VAC single phase. The plug
is a 20 amp twistlock so I'm assuming it draws less than 20 amps at that
voltage. The vacuum motor runs from 120 volts and is included in the
circuitry. I can't seem to find the wiring diagram so I'm guessing that
either one leg of the 240 supplies the pump and the other supplies the the
heating elements OR one leg supplies the pump and one heating element and
the other leg only one heating element (this seems unlikely to me).
So, I have three-phase power in my store and the voltage across any two hot
lines is about 209. BUT, the voltage between any hot line and ground or
neutral is 120 volts. SO, since I'm not going to be running any 240 volt
motors etc, and the pump is running from 120 volts anyway, can I simply
connect the vacuum-heat press to two legs of the three-phase plus neutral
and ground? As far as I can figure I will be supplying the pump and heating
elements individually with 120 anyway. Unless for some reason the heating
elements require 240 but that seems like it would be an unbalanced load with
the pump drawing only 120 from one of the lines.
The wiring diagram is somewhere and I'll consult it before doing anyway. If
this won't work what are my options?