is my connection correct ??

[SunEagle]

hi again thastinger ,,,
the 400w is at 220vac . and the distance to load 25m ,
and going on 24v system cuz my panels are 4x panels 24v of 320w each.
and I know I can make each 2x series but I want to try 24v system first , after I already tested 12v.
thanks a lot brother for all help you did. but 1 more question please , :
if you don't mind to tell which site I can see to calculate size of conductor needed comparing to specified distance , please

What is the watt rating of your inverter? Based on that wattage we can determine the size of the wire between the battery and it as well as the fuse rating.

The 3 conductor wire (hot, neutral and ground) for the 400watt 220vac load would probably need to be at least a #14 AWG or #12 AWG (I am not sure what mm that is) due to the 25 meter length.

[zolar]

hi again thastinger ,,,
the 400w is at 220vac . and the distance to load 25m ,
and going on 24v system cuz my panels are 4x panels 24v of 320w each.
and I know I can make each 2x series but I want to try 24v system first , after I already tested 12v.
thanks a lot brother for all help you did. but 1 more question please , :
if you don't mind to tell which site I can see to calculate size of conductor needed comparing to specified distance , please

[thastinger]

hi, and thanks a lot thastinger,,
if my load about 400w , what is your advice about cable size .
also size of fuse between batteries and inverter. please

400W at 120VAC?
Cable sizing depends on the lenght of the conductor and the load, there is plenty of info on that on the web, if it is in conduit be sure to derate the conductors due to heat build up. About 1500W is all you could pull from that battery bank at a C10 rate so that would be 60 amps DC to the inverter. General rule of thumb is that the fuse would be 1.25 times that a 70-80 amp fuse should be ok.

But why wouldn't you just put all those batteries in series and go with a 48V system? Wires could be half the size, thus less expensive for the same output potential.

[zolar]

hi, and thanks a lot thastinger,,
if my load about 400w , what is your advice about cable size .
also size of fuse between batteries and inverter. please

[thastinger]

yep, you're good, be sure to use the correct size connections and put some corrosion prevention on it, need some fuses on the output

[zolar]

24v battery connection.png
I have 4x batteries each 12v and 200amh , I am making a system of 24v with a battery storage of 400amh , is my connection like what I draw, correct please ?