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Topic ClosedSolar panel recommendations

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offgrid View Drop Down
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Direct Link To This Post Topic: Solar panel recommendations
    Posted: 30 Jan 2020 at 7:28am
Didn’t miss that point at all Colt. The PV101 was per Olddawgsrule’s request. You don’t need that background to size a solar power system.

Just measure your load amps for each item with your clamp on meter, multiply by daily hours of use, then add to get your total daily amp hour load. Multiply by 2 (for lead acid) and then by the number of days of storage you want, that’s your battery capacity requirement.. Take your daily amp hours, divide by 4-5 sun hours, and pick a solar module(s) with that max power current or higher. Done.

Or get a dc power meter, do the above in watts to get watt hours per day, divide by 12 to convert back to amp hours for the battery sizing. Then divide the daily watt hours by 0.69, then by 4-5 sun hours and pick a solar module with that max power or higher.

Either way will work and get you out camping without the semiconductor device physics. 👍
1994 Chinook Concourse
1995 RV6A Experimental Aircraft
2015 Rpod 179 - sold
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podwerkz View Drop Down
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Direct Link To This Post Posted: 30 Jan 2020 at 5:00pm
Originally posted by Colt

 

ROTFLMAO!!! How's that workin' out for ya? 

Very well so far. 

Its a long story and would be a thread detour but yeah, we downsized the 3 phase power here. This building used to be a commercial business....but I'm converting it into a residence, and was only using about 5% of the rated transformer capacity, and the electric bill is based partly on kwh used, and partly on available capacity, so yeah, we downsized the hardware on the pole...saving me about $25 a month....

The transformers are rated in KVA....that's really the only tie-in with the thread. 


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