Me again.
I'd like to confirm some calculations for my new project.
I'd like to be able to control a series of six water pumps for a hydroponic system with a microcontroller, and have a backup battery system in case main power goes out.
Each pump draws a MAXIMUM of 0.5 amps, but I'll assume 1 amp each.
I assume that the relays/triacs and the microcontroller will draw a total of 1 amp.
Diagram below:
Up to the point of the relays/triacs, I assume a total of 7 amps or 840 watts.
Assume the inverter/converter is 80% efficient, therefore up to that point I need 1,008 watts.
Assuming deep cycle 12V batteries, I would need to deliver 84 amps of current via the batteries. So to last for 10 hours I would need 840 amp hours or about six 125 amp hour batteries.
Is this a correct way to think about the project?
I'd like to confirm some calculations for my new project.
I'd like to be able to control a series of six water pumps for a hydroponic system with a microcontroller, and have a backup battery system in case main power goes out.
Each pump draws a MAXIMUM of 0.5 amps, but I'll assume 1 amp each.
I assume that the relays/triacs and the microcontroller will draw a total of 1 amp.
Diagram below:
Up to the point of the relays/triacs, I assume a total of 7 amps or 840 watts.
Assume the inverter/converter is 80% efficient, therefore up to that point I need 1,008 watts.
Assuming deep cycle 12V batteries, I would need to deliver 84 amps of current via the batteries. So to last for 10 hours I would need 840 amp hours or about six 125 amp hour batteries.
Is this a correct way to think about the project?
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