Re: amp hour question
It will use ~ 11amps @12 volts. 24 hours that means ~264amp hours or in this case 3168 watt/hours. This would require a BIG battery bank, and way more panels!
3.5amp for 5 hours would give you ~17 amp/hours You can see you are significantly low not counting any losses, say by a factor of 20 or so. Consider some alternatives including increasing your PV and your battery bank, and or decreasing you load(s)
PS Remember that any given amperage at 120volts will increase by a factor of 10 for 12 volts. So for example 1 amp @ 120 volts equals 120 watts.
The same 120 watts from 12 volts requires 10 amps. VoltsXAmps=Watts. Watts/Volts=Amps
Last edited by icarus; July 11th, 2008 at 18:27 PDT.
Please note, being a moderator does not add any weight to my opinions 300 watts Siemens/BP panels,plus a Sun 90,, making ~400. ~30 amps into Rogue MPT-3024, 450 ah of Trojan T-105, Morningstar ts300 inverter, a Tri-Metric meter.a collection of antique generators, plus 2 Honda eu-1000i's (also a BS2512 IX controller) and assorted other stuff!