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I found a Vmax calculator here: https://gold-coast-solar-power-solutions.com.au/solar-power/solar-panel-maximum-voltage-calculator/ Plugging in values from my spec sheets I get a total of 564.22 for the whole array. I used -2 instead of 2 for record cold here just to be safe. As soon as my...

Thanks, Hedges, for the clarifications. It totally makes sense now about the wiring. I have the 8 Longi and 9 Sanyo on the roof now. Only the Sanyo panels are wired (in series). I am going to use the 5 sanyo I removed for an off grid project in the Santa Cruz mountains. I'm driving there...

Also I don't understand why it would matter how I wire the 9 Sanyo panels, 3s3p or 3p3s. Doesn't the voltage and current come out the same? Is it to make it easier to wire? Also why do I need fuses and what should be their rating? I don't have a south or west option at this point. I only have...

Ampster says 150% oversized panels works on his rig and I read the same about other inverters but found nothing specific to that with the SMA SWR 2500. There is an article on the SMA site that shows a graph of a way oversized system: 15kw panels on 9kw inverter...

I'm stringing the panels finally. I decided to keep (9) of my 16 year old 190 watt Sanyo panels and install (8) new Longi 320 watt. My old Sunny Boy SWR 2500 inverter will not be replaced and these dissimilar panels will be all wired in one series except the Sanyo panels will be in groups of...

It sounds like your charging problem would be solved with the right level 2 charger, if it exists. Or maybe something that can disconnect your ev charger based on your grid feed. I can't help you with that but I imagine an electronics hobbyist could. I am on the E6 rate plan which I think is...

Eventually PG&E told me no changes to the panels or inverter of my existing system without a permit. Why they wouldn't just tell me that up front before my proposal submission is a mystery. Since I can not get a permit at this house I am just going to swap some old 190 watt panels for new 320...

PG&E says that I can export up to 110% of the original rated capacity or a maximum of 1000 watts over. That sounded pretty definite. I can also apply for a modification to the system and when that is reviewed "their team" will tell me whether or not I'll need a permit. The person I talked to...

Ok, I'll call PG&E and see what they say for my case. Hopefully I can export a lot more to the grid and charge at night off peak. Regardless I'll replace some or all my old panels that are probably only producing 170 watts in perfect conditions. Fortunately I have no shade issues but the...

I don't understand your last post Hedges. Level I as I understand it for the Bolt is either 8 or 12 amps of output from the little charger that came with the car plugged into a 110v AC outlet. Or did you mean level 3? I won't need that at home. I imagine level 1 would work fine on the SunnyBoy...

Thanks guys for the good ideas and I checked out the links. I'm hoping to do this on the cheap and avoid a more expensive inverter and batteries. My airbnb business is the shits since the pandemic and I'd rather not go into the hole for this. It becomes a little more affordable if I get the tax...

Hi. I live in the SF bay Area and I have a dilemna. I installed a 2500 watt grid tie system on my house in 2005 and it has worked flawlessly. I got a Chevy Bolt and now I'm paying for electricity again. I'd like to add another 2500+ watts to cover it but I can't get a permit because in the last...