TractorByNet.com - View Single Post - My Diesel Storage and Transfer Set-up

patrick_g · 03-25-2008, 11:37 AM

lbrown, Strictly speaking it is NOT a transformer. Like I said before, transformers are AC in and AC out. No doubt the equipment you bought has a transformer in it but plenty more too.

Not to worry, the pump should do fine on the 12 volt setting. The amp rating is the most the device is rated to produce. That doesn't mean it will force 15 amps on the pump. If the voltage supplied to the pump is 12 volts and it is listed as a 10 amp load then it will take about 10 amps, even if the device powering it is capable of supplying much more.

The battery you connected it to in your previous test is probably capable of supplying 50 amps or so at about 12 volts and probably over 100 if you don't mind the voltage sagging down to about 11 volts or so. At 12 volts the pump will not take much over 10 amps in normal operation. If you ran it with the output valved off and if there is no pressure switch for the pump then current might go above 10 amps but in normal pumping your 15 amp rated 12 volt source should do fine.

I wonder what price of the 15 amp 12 volt supply was and how it compared to a 15 amp 12 volt battery charger which would have other uses. (Just curious...)

Pat

03-25-2008, 11:37 AM	#87 (permalink)
patrick_g Elite Member Join Date: Jul 2006 Location: South Central OK Posts: 2,765	Re: My Diesel Storage and Transfer Set-up lbrown, Strictly speaking it is NOT a transformer. Like I said before, transformers are AC in and AC out. No doubt the equipment you bought has a transformer in it but plenty more too. Not to worry, the pump should do fine on the 12 volt setting. The amp rating is the most the device is rated to produce. That doesn't mean it will force 15 amps on the pump. If the voltage supplied to the pump is 12 volts and it is listed as a 10 amp load then it will take about 10 amps, even if the device powering it is capable of supplying much more. The battery you connected it to in your previous test is probably capable of supplying 50 amps or so at about 12 volts and probably over 100 if you don't mind the voltage sagging down to about 11 volts or so. At 12 volts the pump will not take much over 10 amps in normal operation. If you ran it with the output valved off and if there is no pressure switch for the pump then current might go above 10 amps but in normal pumping your 15 amp rated 12 volt source should do fine. I wonder what price of the 15 amp 12 volt supply was and how it compared to a 15 amp 12 volt battery charger which would have other uses. (Just curious...) Pat __________________ Never wrestle with a pig (however titled) as you just get dirty and the pig has all the fun.