Jagjeet2011
New Member
- Joined
- Jul 4, 2022
- Messages
- 4
Hi All,
I have a decent size pool (23k Gallon) that uses 3/4 HP pool pump motor. I run it daily for 6 hours. I was planning to run it on Solar to save some $s. I live in the Bay Area, California. I do not plan to change my AC motor to a DC pool pump as cost adds up quickly.
I have a few questions and will appreciate if you share your experience.
Q1- I searched and found that 3/4 HP (110 volt ac) motor needs 850watts, but a surge power of 2600 watts. Wattage Link
Battery Size Calculation -
Watts Required = 900 watts (round up from 850)
Amps Require = 900 / 12v battery = 75amp
Total AmpH with 50% usage = 75 * 6 * 2 = 900AH
- Is above calculation correct? I know I tried to simply it, and I can go bit higher to accommodate some losses
- if yes, it seems battery installation is costly. Though, is there a chance I can reduce the battery requirement as I will be running the pump while sun is shining.
Q2- And above question led me think - Do I really need a battery, what if I simply put a 1.5kW system and get it going while sun is shining, we get decent sun hours and I can try to use AC on cloudy days. Any thoughts?
Q2.1 -- Another question I have is - based on my experience, how do we handle the inverter that automatically shuts off if there is no enough electricity and starts when there is enough, irrespective of serial or parallel solar panels. So I want to pump kick off when there is sun and enough power, and switch off when sun sets or not enough power. I tested a few inverter, they have shut off when there is low voltage but they don't get start automatically after that point, have to reset manually.
Thanks All
I have a decent size pool (23k Gallon) that uses 3/4 HP pool pump motor. I run it daily for 6 hours. I was planning to run it on Solar to save some $s. I live in the Bay Area, California. I do not plan to change my AC motor to a DC pool pump as cost adds up quickly.
I have a few questions and will appreciate if you share your experience.
Q1- I searched and found that 3/4 HP (110 volt ac) motor needs 850watts, but a surge power of 2600 watts. Wattage Link
Battery Size Calculation -
Watts Required = 900 watts (round up from 850)
Amps Require = 900 / 12v battery = 75amp
Total AmpH with 50% usage = 75 * 6 * 2 = 900AH
- Is above calculation correct? I know I tried to simply it, and I can go bit higher to accommodate some losses
- if yes, it seems battery installation is costly. Though, is there a chance I can reduce the battery requirement as I will be running the pump while sun is shining.
Q2- And above question led me think - Do I really need a battery, what if I simply put a 1.5kW system and get it going while sun is shining, we get decent sun hours and I can try to use AC on cloudy days. Any thoughts?
Q2.1 -- Another question I have is - based on my experience, how do we handle the inverter that automatically shuts off if there is no enough electricity and starts when there is enough, irrespective of serial or parallel solar panels. So I want to pump kick off when there is sun and enough power, and switch off when sun sets or not enough power. I tested a few inverter, they have shut off when there is low voltage but they don't get start automatically after that point, have to reset manually.
Thanks All