Let’s say you want to buy a rotary converter, and you have a ten horse Invincible Vacuum cleaner.  You tried a 25 hp and it didn’t work.  What do you do? Buy a thirty horse and hope it works? What happens if it doesn't? You would want assurances from who ever sells you this thing, that it is going to work. When you deal with a company that is going to guarantee something, the price is going to go up. Remember these things are heavy and shipping is expensive.

     So let’s say, to be on the safe side, you buy a big rotary. It is planned for your present shop, and future growth. But then you get a steal of a deal on a water pump, like I did here. I bought this $800 Gould water pump for $35.  1/4 horse but three phase. So now you are going to run the 1/4 horse pump, from your 30 hp rotary. How much energy is that going to waste? Will the amps balance?

      In this video we run the water pump from the 15 kva transformer. This is the same transformer that started and ran the vacuum cleaner and the air compressor. And if you watched one of the other videos, it actually started the vacuum cleaner when the air compressor was running.  Needless to say it has power. Now how will it do running the 1/4 water pump.  Well to make a long story short it runs the water pump, no problem, and listen to this; The entire amperage load of the transformer and the water pump was a total of 2.5 amps!! This should blow the mind of a rotary converter guy. Are we wasting energy? Well if you get technical you could say we are wasting 500 milliamps. Why do I say that? Because I could run the water pump from a 3.5 kva transformer and have the total amp draw be only 2 amps. So to be fair using a 15 kva to run a 1/4 horse motor does waste 500 milliamps.  Do you have any idea what amperage draw a 30 horse rotary would have here?   A lot more than 500 milliamps. BTW 500 hundred milliamps is equal to 1/2 amp.

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