Forum Discussion
TobyG
Mar 22, 2018Explorer
westend wrote:
You don't state the size of the inverter and that will dictate your highest current draw and your largest cable size. Most inverters have wire sizes applicable to the current. Your panel won't develop more than about 20 amp charge current so the smallest sized wire from controller to battery would be 12 AWG. 36V and maximium current from the panel would indicate 12 AWG also to be adequate.
FWIW, since I decided to have the least loss of harvest possible and had to order 100' of 4 AWG, I decided to use it for most of my runs. I bought the cable at Waytek Wire, they are local to me. A good online seller that will make custom wire pieces is Genuinedealz.com.
Here is a wire gauge calculator: Calculator
Thanks! I will check out that site for wire. I currently have a 1000watt inverter (modified sine) but, I just came across a great "open-box" deal on a 3000watt inverter with a remote on/off switch also mod-sine. What I found with the 1000w is it didn't like the load my coffee maker put on it and keep beeping at me even though the coffee maker was only 900w. The new 3k inverter states to use 00awg wire and a 500-amp ANL fuse if hard wired. Does this sound like overkill?
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