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Old 07-17-2020, 06:04 PM   #1
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New to solar

Couldn’t find a thread specific to my situation sorry for making new post, but I’m really struggling with wiring. First I’ll tell you my equipment then ask if this setup will work.

-4x100w panels
-40a mppt Charge controller
-40a fuse
-2000w pure sine inverter
-200a fuse
-Blue Sea System fuse block
Ok so does this work?
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Old 07-18-2020, 02:09 AM   #2
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Consider:
1. A means of manually disconnecting the battery bank from the rest of the system (a switch or breaker)


2. A means of manually disconnecting the charge source from the rest of the system (a switch or breaker before or after the charge controller.


3. A fuse or breaker between your battery and fuse block (100A or 125A would make sense for the Blue Sea fuse block)


4. Make sure the current rating (amps) of your fuses is less than the current rating of the wire.


5. The 40a fuse for the 40a charge controller is cutting it close (its safe, but it might trip if you max out your controller). 50A would be better, 40A might be fine. Actually since your PV array is only 400W you should be fine.
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Old 07-21-2020, 12:42 PM   #3
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Will Prowse has lots of good Solar info on his site...
https://www.mobile-solarpower.com/
https://www.youtube.com/channel/UCoj...q8kmJme-5dnN0Q
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Old 07-21-2020, 01:00 PM   #4
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Quote:
Originally Posted by dzl_ View Post
Consider: (1-5)
Right on on all accounts. One thing I wondered since batteries weren't mentioned....



200A fuse: If 12V this seems appropriately sized based on the inverter size, but since I know nothing about the battery bank: Some batteries (cheaper "12v" LifePO4 batteries with internal BMS boards) are quite current limited but make little or no mention of it. I wonder if something like a small 35Ah AGM battery will even reach 200A with a short circuit connection given the opportunity.


Just keep in mind there is such thing as too big, I'm probably thinking of an edge case though.
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Old 07-21-2020, 03:02 PM   #5
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Quote:
Originally Posted by kazetsukai View Post
Right on on all accounts. One thing I wondered since batteries weren't mentioned....



200A fuse: If 12V this seems appropriately sized based on the inverter size, but since I know nothing about the battery bank: Some batteries (cheaper "12v" LifePO4 batteries with internal BMS boards) are quite current limited but make little or no mention of it. I wonder if something like a small 35Ah AGM battery will even reach 200A with a short circuit connection given the opportunity.


Just keep in mind there is such thing as too big, I'm probably thinking of an edge case though.
2x12v 125Ah agm
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Old 07-21-2020, 03:08 PM   #6
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2x12v 125Ah agm
Yeah, pretty sure 200A is well within shot of that.
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