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Search took 0.01 seconds. Search: Posts Made By: miscrms
Forum: Electrical, Charging and Solar 03-13-2018, 05:44 PM
Replies: 117
Views: 31,764
Posted By miscrms
I think either is a good solution. More strings...

I think either is a good solution. More strings means more wiring, more fuses, maybe needing a combiner, etc. As Joe says to fully take advantage you need separate controllers on the strings, so...
Forum: Electrical, Charging and Solar 03-12-2018, 07:46 PM
Replies: 117
Views: 31,764
Posted By miscrms
Eagle, no problem. Glad I could help. Joe,...

Eagle, no problem. Glad I could help.

Joe, for smaller systems using smaller panels I agree. IMHO when you get much up over 1000W you really need to start doing longer strings. The OP is...
Forum: Electrical, Charging and Solar 03-12-2018, 05:40 PM
Replies: 117
Views: 31,764
Posted By miscrms
I would go with the 250/60, and connect them in 2...

I would go with the 250/60, and connect them in 2 strings of 4s. There is a string calculator excel spreadsheet you can download from Victron, you should check my numbers but here's how they look:
...
Forum: Electrical, Charging and Solar 03-10-2018, 12:14 PM
Replies: 117
Views: 31,764
Posted By miscrms
Also I’d look at the voltage matching between the...

Also I’d look at the voltage matching between the panels and the controller. 2s is ~60v Vmp which sounds kind of low for a 48v battery. At 4s Voc is too high for the controller, 3s seems about...
Forum: Electrical, Charging and Solar 03-10-2018, 12:03 PM
Replies: 117
Views: 31,764
Posted By miscrms
Sounds pretty good. I would just be careful...

Sounds pretty good. I would just be careful about the position of your chimney. You don’t really want anything above the level of your panels that is going to create shade on the panels.



...
Forum: Electrical, Charging and Solar 02-27-2018, 12:57 PM
Replies: 117
Views: 31,764
Posted By miscrms
It’s not a bad metaphor IMHO. Lead acid actually...

It’s not a bad metaphor IMHO. Lead acid actually has a lot of quirks, but there’s a lot of infrastructure in place to support it and we’re more or less “use to it.” Li-ion introduces a whole new...
Forum: Electrical, Charging and Solar 02-25-2018, 11:27 PM
Replies: 117
Views: 31,764
Posted By miscrms
2017 Chevy Volt Battery Pack

That’s very interesting, seems like a good strategy. Basically it just seems like they are using a heavy duty enough wiring harness for the BMS taps that you are essentially tying all the cells at...
Forum: Electrical, Charging and Solar 02-24-2018, 04:41 PM
Replies: 117
Views: 31,764
Posted By miscrms
That sounds right. There’s a lot to like about...

That sounds right. There’s a lot to like about the Volt cells, but this seems to be the main down side. There may be a way to reconfigure them into parallel blocks, but it looks challenging. What...
Forum: Electrical, Charging and Solar 02-22-2018, 11:07 PM
Replies: 117
Views: 31,764
Posted By miscrms
Here’s the thread on my electrical plans for our...

Here’s the thread on my electrical plans for our Skoolie if you’re interested:
https://www.skoolie.net/forums/f49/solar-hybrid-electric-skoolie-adventure-begins-19206.html



Sent from my iPhone...
Forum: Electrical, Charging and Solar 02-22-2018, 10:49 PM
Replies: 117
Views: 31,764
Posted By miscrms
Who knew the hard part would be figuring out how...

Who knew the hard part would be figuring out how to get the bus up to 88 mph.


Sent from my iPhone using Tapatalk
Forum: Electrical, Charging and Solar 02-22-2018, 10:48 PM
Replies: 117
Views: 31,764
Posted By miscrms
Patron Saint of my workshop: ...

Patron Saint of my workshop:

https://uploads.tapatalk-cdn.com/20180223/9cb537fde54426e6046159cddde3f937.jpg




Sent from my iPhone using Tapatalk
Forum: Electrical, Charging and Solar 02-22-2018, 10:36 PM
Replies: 117
Views: 31,764
Posted By miscrms
2017 Chevy Volt Battery Pack

When you connect cells in parallel, then put those into a single series string you only need to monitor / balance each set of parallel cells in the string once. The cells connected in parallel by...
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