Solar Install - Fiberglass RV


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Old 09-05-2012, 12:22 PM   #1
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Solar Install

Just completing my solar install and I've been searching for a decent wiring diagram for my system. My question is where am I installing inline fuses or circuit breakers, I have bought 2 inline auto reset 20amp beakers, so far. My system consists of the panel, controller, batteries and inverter. Also with my panel providing 5amps is 20amp breaker too much?
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Old 09-05-2012, 01:43 PM   #2
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...........My system consists of the panel, controller, batteries and inverter.
I would also install a fuse panel for the 12 volt stuff if you don't have one.

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Also with my panel providing 5amps is 20amp breaker too much?
Breakers should be sized to protect the wiring from overheating. If I recall correctly, 20 amps is right for a 12 gauge or larger wire.
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Old 09-05-2012, 01:55 PM   #3
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So locations of fuses, correct me if I'm wrong. One between panel and controller, one between controller and batteries, and a fuse panel for my lights, fridge, appliances etc. No fuse between the batteries and the inverter.
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Old 09-05-2012, 02:23 PM   #4
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So locations of fuses, correct me if I'm wrong. One between panel and controller, one between controller and batteries, and a fuse panel for my lights, fridge, appliances etc. No fuse between the batteries and the inverter.

You should have a fuse (breaker) between the battery and any wires that lead from it. Same for the converter. Think what would happen if any given wire was dead shorted - for instance, if the wire between the battery and converter was shorted, you need a breaker to protect that wire.

I've assuming that you mean converter (110 volt AC to 12 volt DC device) as opposed to an inverter (12 volt DC to 110 volt AC device). In any case, all wires must be protected with a breaker appropriate for the wire gauge.
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Old 09-05-2012, 02:41 PM   #5
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No I mean inverter dc to ac. I have a 1000watt inverter with 4gauge cables to the battery. I have to find a fuse for that?
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Old 09-05-2012, 03:51 PM   #6
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No I mean inverter dc to ac. I have a 1000watt inverter with 4gauge cables to the battery. I have to find a fuse for that?
If the cables get shorted out, the battery will attempt to melt the 4 gauge cable. I'd fuse it just to be on the safe side.

There are lots of inexpensive high amp fuses available from the automobile boom box trade. Examples:

4 / 8 GAUGE AGU FUSE HOLDER + 5 PACK 100 AMP AGU FUSES | eBay

http://www.ebay.com/itm/Aapex-Pos-10...item3a6d88152b

http://www.ebay.com/itm/12V-100-AMP-...item19d00ddc61
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Old 09-05-2012, 04:09 PM   #7
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Thanks for all your help Thomas!
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Old 09-05-2012, 04:42 PM   #8
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Thanks for all your help Thomas!
De nada. Good luck.
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Old 09-05-2012, 06:30 PM   #9
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I have the ANL fuseholders on a 1/0 lead to the inverter and a 6awg lead to the converter and DC distribution. They are bulky and the plastic lids aren't very reliable (mine are tie-wrapped to secure) but they're also sturdy. I wouldn't say the fuses are inexpensive but the amperage rating for "catastrophic failure" should be high enuf to make them a one-time proposition.

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Old 09-05-2012, 06:47 PM   #10
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I have the ANL fuseholders on a 1/0 lead to the inverter and a 6awg lead to the converter and DC distribution. They are bulky and the plastic lids aren't very reliable (mine are tie-wrapped to secure) but they're also sturdy. I wouldn't say the fuses are inexpensive but the amperage rating for "catastrophic failure" should be high enuf to make them a one-time proposition.

jack
The third link in my post is a circuit breaker for $8. Might be a good alternative.
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