complaints when using a hughes autoformer
I am looking at a used hughes autoformer. I know some parks rules say they are not allowed. Some parks we have been in, I have seen voltage at @ 102 to 104 with my a/c on. I would be using a PI 3o...
Forum Discussion
P=I*E Power = current x volts
Lets use a 30 amp circuit operating properly
P= I x E 3600 =30 x 120
However under low voltage conditions
there is only 100 volts instead of 120
P= I x E or 30 x 100 =3000
the autoformer takes that same 3000 watts
and keeps the voltage consistent but the available current drops
3000 = 25 x 120 .(note current dropped from 30 amps to 25 amps).
Power is still 3000 watts
Now there are some heat losses and losses do to impedance. But over all that is the fundamental function of the autoformer.
It ensures adequate voltage, however in the process less current is available.
On a 50 amp circuit we don't necessarily need the full 6000 watts.
50 amps x 120 volts=6000 watts
So if the current drops a bit it doesn't matter as long as adequate voltage is maintained.
Lets use a 30 amp circuit operating properly
P= I x E 3600 =30 x 120
However under low voltage conditions
there is only 100 volts instead of 120
P= I x E or 30 x 100 =3000
the autoformer takes that same 3000 watts
and keeps the voltage consistent but the available current drops
3000 = 25 x 120 .(note current dropped from 30 amps to 25 amps).
Power is still 3000 watts
Now there are some heat losses and losses do to impedance. But over all that is the fundamental function of the autoformer.
It ensures adequate voltage, however in the process less current is available.
On a 50 amp circuit we don't necessarily need the full 6000 watts.
50 amps x 120 volts=6000 watts
So if the current drops a bit it doesn't matter as long as adequate voltage is maintained.
