Using a residential PV panel on RV
Hi everyone, Newly registered to the forum here, I've been reading a lot of helpful information here over the past year while doing my conversion though. I haven't been able to find a straight ans...
Forum Discussion
BoonHauler wrote:
...I still have to run a load test on a 12 VDC ceiling fan and decide on what roof top A/C I'll be running with but somewhere between 1.25 and 1.5kw, most likely the later.
As often with long threads, I don't know what we are talking about, anymore :)
And I fail to see the connection between solar and A/C. To me, these two things are unrelated until you reach solar wattage at least 1500W.
Which is something opposite to what the OP was asking about, as his setup was rather minimalistic: LED lights, water pump and some 12V fridge. This can be supported with 300-500W solar and 30A controller. With fridge being the biggest unknown. Lights, pump, radio, LP sensors and 2 hours of the wide wobbly web will draw 15-20AH. "2 hours" because this is how long a typical 4 AH laptop battery lasts when surfing the web, and in a minimalistic mode you need to charge the battery in daytime when the "big bank" is full and you have a surplus of energy, rather than running laptop through inverter. Unless the location is really bad, like PNW, a flat mounted 150W-200W panel will harvest 20A without problems. OTH, fridge draw depends on the volume and ambient. Well insulated, at temps under 90 a single-door upright unit with a freezer tray tends to work to ~10 AH per 1 cu.ft.
