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SnowTexan
Joined: 08 Aug 2019
Posts: 185
City/Region: Carlton
State or Province: WA
C-Dory Year: 2006
C-Dory Model: 22 Cruiser
Vessel Name: Miss Maria
Photos: Miss Maria
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 Posted: Mon Jul 18, 2022 2:30 pm Post subject: Fuse locations for removable solar and inverter |
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Boat/rv/truck portable solar setup Could use a little help! Safety check. I have 2 x 100ah AGM batteries to be charged exclusively by a 130watt suitcase style solar panel. I’ve wired a 10 amp inline fuse on the positive side of the cables from the panel and this cable will connect to the battery bank with an anderson plug. The batteries will have the receiving end of the anderson plug hardwired to them. Batteries are approximately 6 cable feet apart to be connected in parallel with #4 cables with lugs. 2000 watt Inverter has doubled up #4 cables running maybe 2’. Goofy looking but came with inverter and they are solid!
Do i need a giant fuse between the inverter and the battery? And how do i ground this on the boat? (Rv/trailer can run to frame).
Assume this will run no vital boat electronics and will never be tied to the motors. Solar only system. Thank you in advance for participating in the “keep miss maria crew from electrocution” thread! |
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thataway
Joined: 02 Nov 2003
Posts: 21469
City/Region: Pensacola
State or Province: FL
C-Dory Year: 2007
C-Dory Model: 25 Cruiser
Vessel Name: thataway
Photos: Thataway
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| Posted: Mon Jul 18, 2022 3:02 pm Post subject: |
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I probably would run a 15 amp fuse for the solar--it is unlikely it will produce more than 10 amps, but theoretically can produce a bit more.
I used a 300 amp fuse between the Li batteries and the 2000 watt inverter I used in the C Dory 25.
I didn't specifically ground the inverter. Same as not specifically grounding a Honda inverter generator. However, in my setup, I switched mains power to inverter power--using the same outlets, thus it was sort of grounded thru the galvanic isolator...
_________________
Bob Austin
Thataway
Thataway (Ex Seaweed) 2007 25 C Dory May 2018 to Oct. 2021
Thisaway 2006 22' CDory November 2011 to May 2018
Caracal 18 140 Suzuki 2007 to present
Thataway TomCat 255 150 Suzukis June 2006 thru August 2011
C Pelican; 1992, 22 Cruiser, 2002 thru 2006
Frequent Sea; 2003 C D 25, 2007 thru 2009
KA6PKB
Home port: Pensacola FL |
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croakz
Joined: 21 Sep 2020
Posts: 104
City/Region: Seattle
State or Province: WA
C-Dory Year: 1997
C-Dory Model: 22 Angler
Vessel Name: Jolly Blue
Photos: Jolly Blue
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| Posted: Mon Jul 18, 2022 8:29 pm Post subject: |
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@SnowTexan Do you have an MPPT controller or does your solar panel suitcase plug directly into your batteries?
I've used this chart to size fuses.
https://www.bluesea.com/resources/1437 |
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SnowTexan
Joined: 08 Aug 2019
Posts: 185
City/Region: Carlton
State or Province: WA
C-Dory Year: 2006
C-Dory Model: 22 Cruiser
Vessel Name: Miss Maria
Photos: Miss Maria
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| Posted: Mon Jul 18, 2022 10:11 pm Post subject: |
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| croakz wrote: | @SnowTexan Do you have an MPPT controller or does your solar panel suitcase plug directly into your batteries?
I've used this chart to size fuses.
https://www.bluesea.com/resources/1437 |
No MPPT, the panels have PWM hardwired in and it didnt seem cost efficient to swap it out given the higher temps we often run in and relatively small (1-2 battery) banks we attach it to. If We (when we…) go lithium we’ll likely oversize the panels and use an mppt controller. For now though its a pretty inexpensive setup that sems to just work! Made mushrooms and polenta for lunch in it this afternoon 😂. 12v polenta just tastes good. Thanks for the link, will check it out. Also Bob, your past success taken under advisement as always! |
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