WAGO connectors for DINRAILS. https://a.co/d/cYCj4Zx

A cowboy friend of mine, half my age, but already twice the man has a saying. He says it a lot.

"You can steal my money, and I can probably forgive you. You can take a cow, and I'll figure you for hungry, and we'll work something out. But if you steal my time? If you steal that, God help you cause there ain't no forgiveness down that road with me. Don't take anything I can't replace, or it won't work out well for either of us."

That's a lesson I wish I'd learned at his age.

A local guy came by yesterday to consult about his solar setup. He revealed to me that he’d been connecting the pv wires inside a jbox and had stabbed himself in the finger with 360vdc.

The solution for this is to disconnect any two panels in the string, do the work and then reconnect them.

A word about generators and solar. If your system is grid tied or you otherwise use AC coupled inverters, make sure your generator idles at 3720rpm 62hz (3120rpm 52hz in Europe).

The reason for this is that when grid tied inverters see 60hz (50hz) they will synchronize with it and make all the power they can. They will happily backfeed your generator and harm it.

If the generator is idling at 62hz (52hz eu) the solar inverters will see this as either "out of spec" or "make 0 power" and not back feed your generator.

Older grid tie inverters will not sync when the frequency is >60.5hz. Newer grid tie inverters will make full power up until 61hz and throttle back power as the frequency rises to 62hz.

Attached is a screen shot of my battery inverter throttling the grid tie inverters.

Fire drill time:
Tonight while your wife and kids are watching TV, go outside to the highway. Approach your house as if you were going to rob it. Look at your house from an outsider's perspective. Could you look in the windows without anyone noticing? Could you have kicked in the back door? Think about how attractive a house with lights on would be after SHTF. Think about how far the smell of bbq can carry.

So how defensible is your house? How attractive is your house (in the wrong way).

Something to think about.

And I thought i had a fun childhood. 😂

I have no idea how good these batteries are, but they are 16kwh 48v. https://www.xihopower.com/xiho-51.2v-16kwh-314ah-stackable-lifepo4-solar-energy-storage-lithium-ion-battery-pack.html

https://www.youtube.com/watch?v=21OLkX8_Ou0

Another heads up. This is a reputable dealer. Not sure about the batteries. Never had my hands on these.


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Here’s a system a guy installed out in Utah. 20kw of panels, 24kw of 240v, 192kwh of batteries. Total system cost: $120k.

I speced out a guy here with 26kw panels, 20kw 240v and 64kwh battery for $24k. Home brew batteries save a lot of money.

https://youtu.be/3OEoyDBxjuc

Solid rocket fuel

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Here's the parts list for a project going on near here. 20kw of inverters making 120/240 , 26kw of panels and 64kwh of batteries for $24000.

This system has an unusually large amount of panels. The reason is the client was putting it on a 1:12 pitch roof. I had to increase the number of panels to make enough power for him in winter. If he had opted for a ground mount we could have changed the tilt and used half as many panels. In truth, the amount he would have saved on panels would have covered the expense of the ground mounts... this way he makes 3x as much power as he needs in the summer and 26% more than he needs in winter.

Recorded last winter. If I did this over again, I would have used ironridge x100 rails or the thicker unistrut. Ironridge brackets are cheaper than unistrut stuff.

These panels are short to not catch wind in hurricaine.