Lots of changes around here this year – replaced my single-speed pump with a dual-speed, installed a SWG, and had solar panels put on my house (for electricity, not pool heating). Now I'm trying to educate myself about how much power it's taking to run my pool, but I'n a newbie at all things electrical. I'm hoping one of you experts can check my math.
Here's what I've got so far. The label on my new pump says it runs on 230 volts using 9.1 amps on high speed and 3.4 amps on low. I generally run it 6 hours a day on low speed, only using high occasionally like when I'm adding chemicals. So I multiply 230 volts x 3.4 amps x 6 hours and get 4.7 kWh per day.
Now this next part confuses me. When I push the "diagnostics" button on my SWG panel it says it's running on 25.4 volts and using 6.18 amps. Are those the numbers I should use to figure the usage? I'm running it at 30%, so when I multiply 25.4 x 6.18 x 6 hours x 30% I get .28 kWh per day.
That seems very low. Should I be using a different number for the voltage? Is the 24.5 reading DC volts instead of AC, and what difference would that make? (The SWG is plugged into a dedicated outlet which is connected directly to the same timer that is running the pump and the heater, so maybe they're all running on 230 volts.)
And one one more thing: there's a label on the SWG that says "24 VDC, 5A MAX." What does that mean and is it anything to worry about since I seem to be over both of those levels?