Recent content by JustPractical

Good advice. For exposed connections, they are great.

Interesting. I know grounding and bonding can sometimes be a bit of a rabbit hole. I had gone with the practical "why bring any potential problems back into the house to run them through system ground."; BUT...I know the mantra "one ground in the system to avoid ground differntial problems" so...

Question #4: Regarding running the ground - I had thought the whole ground array was to be attached to a grounding rod set near the array. No?

So if I used a plug combiner to combine the "2P" part of each array, I could then run 10awg off that back to the house in pvc, and then to a disconenct, and then to 10awg on the inside?

If I parallel them at the array with a combiner (or a plug connector) then 10AWG is OK for each 4s2p bank, yes?

You are 100% right. Got focused on the current and wattage and forgot about the voltage.

Inverter info: Growatt 12kw Inverter - 2x60A 250V MPPT’s (Split phase 120/240) 100A Max Charging Current 7000W max per MPPT If I ran 8S2P, that would be 312 Volts, 19 amps, and about 4640 Watts. That's an idea, but I don't think the 12awg will take that. I broke it up because the array will...

I have questions...:unsure: 1) By "just combine them at the disconnect box" could I just put a ring terminal on each string and put them on the same lug of the disconnect. (Assuming the disconnect is rated for the combined ampacity.) 2) Maybe (assuming I had plenty of 12AWG) might pay to run...

Thanks for the advice (and sanity check). I would consider running 8, but 12 is more "available" at work. I was considering doubling up 12's, but that seemed overly ghetto.

I've reached that point in the project where I'm second guessing everything and running out of money. I could use some help with the thinking part. My ground mount array will be 4640w, 16x290w, Two banks of 4S2P feeding two separate PV inputs on a Growatt 12k. I plan to mount the disconnect...

I opted to go with a Sunmodo Ground mount system. Price was reasonable and seems fairly robust. Plan to install it when the ground thaws

I have a 48v 100ah LiFePO4 battery on a portable setup. I charged it to 100% and then put it in a non-climate controlled shed where temps can occasionally drop to 0C and below. I know not to charge below 0C and I believe I can dicharge down to -20C. My question: any harm in letting the...

I thought it was a bad idea, and had serious doubts about it holding up the load - until I got the two pieces on the wall. Then there was that "Oh...this is gonna work" moment.

and same for batteries

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