Re: 12v DC to 115v AC for boiler pump

Posted by Jon Hagen on December 31, 2006 at 12:19:25 from (69.26.29.41):

In Reply to: Re: 12v DC to 115v AC for boiler pump posted by 55 50 on December 31, 2006 at 11:57:36:

For emergency power to keep the heat on, you might power your pump with a battery and inverter. For everyday use it would take a pretty spendy solar system to generate that much power. Say your pump takes 2 amps at 120 volts, to make that from 12V would mean you need to generate over 22 amps at 12V, as inverters are never much more than 90% efficient.

Considering that you get not more than 1/2 of a 24 hour day with enough light to make the solar charger work, you would need a 500 watt solar panel and a big battery bank to make it work. I have not priced that stuff lately,but I suspect the cost would be several thousand $$.

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