Here in South Central Alaska (Anchorage region) there is not enough sunlight in winter for solar panels to generate sufficient electrical power; I cannot deliver enough water when I need it via the Shurflo 9300 24 VDC pump down in the well. The simplest solution to distribute power from my 12-volt battery bank is to use an existing 115 VAC cable from the Prosine true sine inverter to the well area, and convert to 27 VDC at the well head using the DLS-27-15 as a power supply to run the pump directly. While admittedly not the most efficient use of energy due to 10% and 20% losses converting from DC to AC and back to DC, it is a practical way to double the battery DC voltage and obtain a decent flow rate. It works great at zero degrees F!The pump is painfully slow if run directly on 12 VDC and I would have to run a separate DC cable across the yard to do it that way. A bonus is that since my inverter runs in "Power Save" mode, it will automatically turn on when there is a demand for power and shut off again when the well is shut off (by switching off the AC input to the DLS-30-15). This eliminates a "phantom load" and conserves battery charge (often supplied by a generator during cloudy weather). Another bonus is that the two panels originally purchased to run the well have been moved to increase the capacity of the main solar array for battery charging.
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