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Old 09-30-2014, 05:58 PM   #11
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What size wire to use...

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Originally Posted by dennis b View Post
I'm sure answers are on here somewhere but...Ihave 2 bats and an inverter. I plan on using #2 from inverter to 1st. bat.
Do I use #2 to connect 2 bats in parallel?
If you are looking at a 600watt inverter, that alone is 50Amps, if it has a 1,000 amp surge, then you have to design for an 83amp circuit. You also need to know how far your inverter will be from the batteries and compensate for that in wire size. The manufacture will have the minimum cable and 12VDC FUSE requirements in their documentation, or call tech support. My 1500 watt inverter requires (per mfr) a 300Amp ANL fuse between the battery and the inverter's 12 Volt input. I also used 2/0 between the batteries, fuse and inverter. Also 2/0 for ground. The inverter has between 3' and 4' of cable to the battery connection.

Have not maxed out the inverter/fuse, or had any major surges yet so I guess I am set up OK.

Just my thoughts,
Don
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Old 09-30-2014, 06:20 PM   #12
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The #2 inverter cables I bought at a truck stop (Pilot) are rated to handle 1500w continuous. Should be more than enough to handle a 600 watt inverter. The truck stops have bigger cables as well I think for 2500w inverters.
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Old 09-30-2014, 06:44 PM   #13
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Need more info to size your wire. How many watt Inverter. I seen something about 600 watts are you sure or do you want to upsize it a bit?
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Old 09-30-2014, 07:23 PM   #14
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I still think you got that backwards?
The smaller the wire thickness # is the heavier it is....so #2 is heavier than #4
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Old 09-30-2014, 07:32 PM   #15
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Hi Dennis B,

What you are saying is true until you reach size 0, then it goes to 00 or 2/0 then 3/0 then 4/0. Here is my 3,000 watt inverter install with the 4/0 cable. The 4/0 is going from the positive and negative of the inverter towards the batteries. The positive first has a 400 amp fuse, then batteries. The negative lead goes to the 500 amp shunt, then the battery bank. If you look at the bottom left of the wiring you'll see a #2 gauge wire I used for the inverter ground. That is the gauge of a standard battery cable. Notice the hug difference between the standard #2 battery cable and the 4/0 gauge welding cable.
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Old 09-30-2014, 08:11 PM   #16
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Didn't know that! makes sense now!
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Old 09-30-2014, 09:17 PM   #17
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Quote:
Originally Posted by Big Sky View Post
I will say that Magnum Energy makes a very amazing product. They are seemingly bullet proof and their tech support team is extremely quick to respond and easy to work with. That said, I have a Xantrex 1,000 watt for sale.
How much are you asking for it?
How old?
I would imagine it is a pure sine?
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Old 10-01-2014, 12:15 AM   #18
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Quote:
Originally Posted by dennis b View Post
How much are you asking for it?
How old?
I would imagine it is a pure sine?
Absolutely pure sine, used it for LED televisions, DirectV DVR, phone re-charger. If you care about the life of electronics, you do NOT use modified sine wave. I have it listed in the parts & accessories classifieds, $350 or best offer.
https://www.jaycoowners.com/forums/sh...ad.php?t=21333

The listing shows pics of both the unit as well as the remote I used to have installed in my TT wall. I've since replaced it with the Magnum Energy.


It is pre-wired with a male and female plug, easy to use the auto-bypass so you are not having to unplug from the inverter and plug into your wall outlet, it will automatically by-pass and use shore power when you are plugged into a power source and use battery power to create AC power when you're not. I have the battery connection cable also, 6 feet each of #2. I suppose you could also wire this into your panel, not how I used it. Send me a private message and I'm happy to discuss it with you. You'd be happier with this than a 600 Watt. This is a 1000 watt (1500 watt surge). Google and see what you find, I've found a new prosine 1000 goes for about $650-$750.
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