Hi there, does anyone know what the wire size (in awg) I should use to connect the controller to the battery I use a 12v 108ah battery
1802164
I used 10 Gauge, distance to the battery and controller charging output (Amps) has a bearing on the wire gauge size. Go larger rather then smaller, it make the system more efficient and saver.
1802165
I have the same setup with 45 watts of solar panels. I'm using 12 gauge wire, although 10 gauge will fit. No problems with 12 gauge here.
1802166
Thank you I had thought so but when I got the charge/controller it said to use this weird formula to figure gauge size. Go figure. Again thanks.
2134186
The Controller I purchased did not have a particular plug, just two bare wires that need to be spliced to the wires from the solar panel. I used a crimp style wire connector, I imagine a wire nut could work as well.
200134
4awg wire will work fine, no need to replace with 8awg. I have 4awg wire ran to this same amp accompanied by a JL 10" sub and it supplies nice, clean power
63412
You Need A Charge Controller. Connect Your Battery And YourSolar Panel(S) To The Charge Controller.The Gauge(Thickness) Of The Wire Depends On The Distance From The Charge Controller To The Solar Panel And The Battery.You Should Be Able To Find Some Images online.
2134187
Buy the MC-4 connectors. Then puchase some 18 to 16 gauge wire in the length you need.Attach the wires to the MC-4 connectors. The MC-4 connectors plug into the panels and the wires they are attached to go to your controller.Go to this link for more info: http://www.freesunpower.com/index.php
1900010
Hi Lisa, connect the BLACK wire (ground) directly to the battery and the RED wire (power) needs a 15 watt inline fuse. Best of luck.
1224565
I used size 4 for all my solar needs panels to controller to batteries from there to fuses to inverters. mite be over a little. But I don't have to worry about wire size. and it fits fine on my controller. I am not loosing any power due to that size. and I had problems with this controller!
707713
I don't believe you'll have a significant reduction in current unless you start talking hundreds of feet. The specs on this say it has 3 foot cables, but on mine the cables from the panel to the controller are 10 or 15 feet long. (Maybe they changed the cables, maybe they're talking about the cables that go from controller to battery, I'm not sure). The wires are made of copper, so resistance is low. You might have to splice cables together to make the distance, but as long as you do that correctly, it should work fine. Another option would be to solder your own longer cables directly to the panel, which I think would work better.
2228489
I would use 6 gauge stranded copper wire as you don't want any more than 3% voltage drop. If operating at the high end of the 600 watt, 4 gauge would even be better. You're actually better off positioning the inverter closer to the battery source and running an extension cord from the inverter to the usage area.
2098143
I bought a wiring kit that has 8 gauge wire for the amplifier power and ground wires. The power wire connects directly at the battery + (a 17 foot wire). The ground connects at the chassis (3 foot wire). Your 18 awg wire is for radio only. Do not use same wire for amplifier.
2277641
How many batteries depends on what you plan to run and for how long. Don't bother with anything bigger than 14 AWG for the 120V side.
1281468
Yes, the controller has a + and - to battery, you can cut and use the two factory ends for the controller and then go to a electrical store and get 2 10g or larger that can fit the wire and fuze them together and the round ends will fix over the battery termainals
1461035
I used standard crimp connectors to wire mine up to a 12v marine battery underneath my golf cart. I used the red ones because their the smallest. Because the wire is so small, I stripped enough so I could double the wire over. Then I daubed liquid electrical tape over it. Hope this helps.
2255670
I'm sorry but I'm unable to answer your question, I purchased this product to splice in a new bow light & depth/fish finder to my boat witch is connected to a fuse box that's connected to a 12V Marine Battery!! Try contacting the seller of the 20ga 25' Red/Black Hookup Wire 12V DC, I would imagine they would be able to supply the answer to your question!!!
336376
This is not what MC4 connectors are for. They are for the 10 AWG cables coming from the photovoltaic panels to the controller. I would advise larger-gauge cables from the controller to the battery. I used 8 AWG from a Renogy 30A and soldered big-gauge eyelets to connect to the battery bank (4 x 6V golf cart batteries in series for 24V).
719774
wires are bare ends. you can put what ever you need on the end. the idea of this is to connect it to a 12 volt car battery. it should be wired thru a fuse or fuse block of some sort to protect everything. i bought a blue sea systems st blade fuse block to connect the 2 i have and in turn it is connected to a deep cycle 12 volt battery. wires are 70" long.
1155209
There needs to be an in line 20 amp fuse between the battery and the controller. I put mine near the battery.