How do I figure out how much excess power (panels) I would need during the "day" to utilize the additional power as well as charge a 48V 5.12kWh (Lithium EG4 or SOK) battery?
For example, suppose I have a 3000W All-In-One inverter (not tied to the grid) and I want to run a 120v hot tub using 1200 watts with the "heater on" for 5 hours during the day, with the idea of not discharging my battery, but using the "excess" solar panels to run this during the day. So at the end of the 5 hours, my battery would be close to fully charged. And just for this example, after 5 hours i shut the hot tub OFF.
AND FOR MY EXAMPLE LETS SAY IT'S A PERFECT "NO CLOUDS OR SHADE DAY DURING THESE 5 HOURS.
How would I calculate this?
48V Lithium 5200W / 5 = 1040W (bump up array with extra - good practice) so maybe 1200W panels just to charge battery and then would need 1200W more panels to run hot tub heater? 2400W
For example, suppose I have a 3000W All-In-One inverter (not tied to the grid) and I want to run a 120v hot tub using 1200 watts with the "heater on" for 5 hours during the day, with the idea of not discharging my battery, but using the "excess" solar panels to run this during the day. So at the end of the 5 hours, my battery would be close to fully charged. And just for this example, after 5 hours i shut the hot tub OFF.
AND FOR MY EXAMPLE LETS SAY IT'S A PERFECT "NO CLOUDS OR SHADE DAY DURING THESE 5 HOURS.
How would I calculate this?
48V Lithium 5200W / 5 = 1040W (bump up array with extra - good practice) so maybe 1200W panels just to charge battery and then would need 1200W more panels to run hot tub heater? 2400W