Re: [Electric Boats] 48V to 12V

 

Pat,

I think so.  the idea is 4 pumps in series activated by one switch. This is not 4 switches activating each pump that is tied in parallel per battery.  Should work and sounds like quite an Idea. Think about it, the bilge gets pumped even if one or two pumps become clogged.

Kevin Pemberton

On 02/14/2011 04:53 AM, greenpjs04 wrote:

 

Perhaps I have misunderstood Myles' suggestion, but when putting anything in series, balance becomes important. If the four twelve volt pumps are identical and loaded identically, then each will see 12 volts. However, if 3 are dry and one is wet, the wet one will have a higher load and its voltage will drop causing problems. If the pumps are tied to each individual battery, then some of the problem goes away, but the original objective of keeping all four batteries balanced still hasn't been achieved since the four loads can vary by quite a bit unless all four pumps are loaded equally (all pumping water of equal depth to outlets at the same height).

Pat

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