Guys this is a serious issue. Please make sure you have ground bonded your panels together or that the ground bond connections are in good condition.

When we connect solar panels in series the voltage goes up. Sometimes to 450v-600v. The positive and negative wires are NOT connected to the frame of the panel. If you get water inside, one of the silicon wafers inside a panel may contact the frame of the panel. This is called a ground fault.

Here's an example: you have 12 panels connected in series making 480v. the first one has 40v... 2nd 80v.... the 12th one 480v. Now let's imagine that the 11th panel got water in it. The aluminum frame of that panel has 440vdc on it. If it is not grounded to the mounting rails and to the earth, someone could get a nasty and potentially lethal shock if they just touched the frame of that one panel. If you ground bond all the metal frames of all your panels, then no matter which one fails, it will have the same voltage as the earth .... 0v.

I challenge everybody in this group in the next 90 days to have a fire drill at their house or residents or wherever it is that they reside and then I would like y'all to tell the group where your shortfalls were and how you plan on fixing them for your next fire drill sharing this information with everybody is exactly what we're here for

Snicker.

Our teacher asked what my favorite animal was, and I said, “Fried chicken.” She said I wasn’t funny, but she couldn’t have been right, because everyone else laughed.
My parents told me to always tell the truth. I did. Fried chicken is my favorite animal.
I told my dad what happened, and he said my teacher was probably a member of PETA. He said they love animals very much. I do, too. specially chicken, pork and beef.
Anyway, my teacher sent me to the principal’s office. I told him what happened, and he laughed, too. Then he told me not to do it again.


The next day in class my teacher asked me what my favorite live animal was. I told her it was chicken. She asked me why, so I told her it was because you could make them into fried chicken. She sent me back to the principal’s office. He laughed, and told me not to do it again. I don’t understand.
My parents taught me to be honest, but my teacher doesn’t like it when I am.

Today, my teacher asked me to tell her what famous person I admired most. I told her, “Colonel Sanders.” Guess where I am now...

Seriously folks.... Turn off your main breaker this weekend for a test run. See what fails. Can you run the fridge? Do you really wanna use a generator to run the fridge long term? Internet is down... how do you communicate? Walkie talkie or mesh? Can you cook three meals? How is sleeping without air conditioning?

If you ever wanted an opportunity to get spouse approval for a solar project , turn the power off and show her what it's like to not have coffee and HVAC.

Found an engineering sheet on these trusses.... problem is they list a snow load but not with relation to the span. I guess square feet are square feet.

I was talking to one of the local hams who has gotten in to meshtastic the other day and he said what was valuable about meshtastic was that it didn't need any infrastructure, whereas meshcore requires repeaters. So his conjecture is that meshtastic is more suitable for ad hoc emergency response.

Well as it turns out, you can do the same with meshcore. From your phone/terminal you go into the settings and check the box that says "repeater". It will move your MC device to 918mhz and that device will behave as both an interface for your phone and a repeater.