Solar Wire Size..??? Fuses on panels...??

RoyB wrote:

My goal for my upcoming solar panels will be be to produce at least 20AMPS of usable DC Current during high sun in hopes to re-charge my multiple battery bank to at least there 90% charge state before I lose the high sun. Then I can use the batteries for the next day/night run off the batteries...

I would love to have enough solar panels to re-charge my batteries to their 90% charge state in a three hour charge run but this is unrealistic cost wise to attain. My current battery banks want to use 52-53 AMPS DC current when first hit 14.4VDC charging voltage from the controller. This would require several solar panels in he setup since most 120WATT Solar Panels will only produce around 15-19VDC at 5-6 AMPS of usable DC Current. Just having a couple of these sized panels on the roof will take alot of hours of high sun to achieve this before your high sun goes away at the end of the day.
Roy Ken

But why? From the time the sun comes up until its dark the panels will be pulling in power and unless you are using a lot of power during the night you battery's will probably be charged before the magical 3 hours of high sun. With 200 watts of panels on my rig by 11am my 2 12 volts are charged and floating. Its not like all the charging has to be done during the 3 hours of high sun, during this time its time to use any high draw stuff that might be needed since your throwing away power like running the 12 volt air compressor to check air pressure in the trailer tires.