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  1. R

    Thermostat setting for electric preheat with PV diversion

    I plan to get an LP on-demand water heater for my off-grid house, and would like to add an electric tank water heater to pre-heat well water. I asked two on-demand brands about incoming water temps. Rinnai said their units require a minimum delta temp of 35 degrees, so an output temp of 130...
  2. R

    Grid-tied vs off grid inverter

    Can an inverter designed for a grid tied system be used to provide 120AC from an off grid battery bank, or are there aspects of grid-tied systems that preclude this even if the battery voltage is within the inverter parameters?
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