Forwarded from Working Men Memes (Daily Armour Of God)
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One of the goals of my system was to match the house's needs all year. Most homes draw more power in the winter or summer, so you'd want to bias production for those times by designing the mounts for the tilt that gives you power when you need it. For my house, our power usage is nearly the same each month so I wanted a system that made the same amount of power each month. As it stands I make about 3000kWh a month.
This is my production for the past 14 months. I modeled the production using the PVWatts website and found that tilting the panels 10degrees steeper than textbook gave me consistent power each month.
If I had tilted the panels "by the book" I would make 20% more power in 365 days, but at the cost of mot making anything in the winter.
So when you design a system you need to know your month to month usage, if you will export power or if your goal is to run the house from batteries. This will determine your array's tilt angle.
This is my production for the past 14 months. I modeled the production using the PVWatts website and found that tilting the panels 10degrees steeper than textbook gave me consistent power each month.
If I had tilted the panels "by the book" I would make 20% more power in 365 days, but at the cost of mot making anything in the winter.
So when you design a system you need to know your month to month usage, if you will export power or if your goal is to run the house from batteries. This will determine your array's tilt angle.
Forwarded from Working Men Memes (Atomic Rooster)
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Skeeter Defence System
Just for shits and giggles I looked up a PCB that interconnects all the cells in a pack. Min order is 5 circuit boards but this is the bus bars and balance wire interconnects. $300 for 5 boards.
I ordered flexible bus bars which to be honest this doesn’t have and paid $70 for just the bus bars for one battery. So overall this wouldn’t be a bad option.
I ordered flexible bus bars which to be honest this doesn’t have and paid $70 for just the bus bars for one battery. So overall this wouldn’t be a bad option.
Bad storm coming thru. Lightning popping everywhere. So on a hunch I threw the big honking Frankenstein switch in the basement to disconnect the entire property from the grid.
An hour later….
Daughters car just texted and said charging failure. She’s on grid power around the corner. Went down and looked and the pilot light on top of my transfer switch is off. That means the grid is indeed down. I’m still cooking a pot of rice. Not a damn thing changed in the house.
An hour later….
Daughters car just texted and said charging failure. She’s on grid power around the corner. Went down and looked and the pilot light on top of my transfer switch is off. That means the grid is indeed down. I’m still cooking a pot of rice. Not a damn thing changed in the house.