All three pumps in the machine are powered by the van, as well as the coolant heat exchangers. (12 volt system) the three vacuum pumps are powered by 120 volts. That's why it can run on two 15 amp circuits.
The vacuums are designed in a V system which has never been before. This is why the vacuum is comparable to a class 2 slide-in.
At the price of $7995.00 it can be used as a backup or main machine.