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Re: How do you go off grid without UPS or generator - daytime only power?
A similar and probably better approach is to build a system with very minimal battery capacity. Then work on ways to shift loads to the daytime.1 · -
Re: Mppt vs pwm real world testing
> Then it would drop to 100 watts for 20 seconds Sounds like a poorly designed/configured MPPT controller. The only conclusion I would draw from the test is that PWM sometimes slightly beats MPPT.1 · -
Re: Is there any reason to NOT over rate an MPPT
A typical MPPT charge controller will be slightly more efficient at 30-50% of capacity than anything near 100%.1 · -
Re: Solar attic ventilator
> the controversy involving attic ventilators There is some data indicating that attic ventilators can increase energy use. But it's a case of taking data involving high powered exhaust fans and t…1 · -
Re: PV OVER VOLTAGE
> High Voltage Disconnect: 16V This number could be reached in any weather. It isn't a good match for a 17+V panel.1 ·