Comments Please!

[littleharbor]

If you're using 60 cell panels you need an MPPT charge controller capable of accepting at least 100 Voc. and wire your panels 2s2p. 60 cell panels aren't 24 volt nominal. 24 volt nominal panels are composed of 72 cells. usually.

[nomadros]

Thanks.... .

I've just sized everything up and I'm only using around 500w max (without compressor), so adding 25% would give me 625w inverter, however once you have something you tend to use it and I can see me charging and using tools. If I settled on an inverter around 1000w could the batteries cope ok with that? I'm wary of small inverters because I've a 300w 12v one in my truck and it craps out when I try to charge various tools.

Just been on a crash course of all this...
so....
panels (4 x 270W talesun polycrystalline at 60 cells per panel as speced above)
batteries (2 x Ultracel 230-12 as speced above @ c10 200ah in series)
charge regulator 24v 30A PWM Must
inverter 24V 800VA Victron Phoenix

SunKing...am I getting better or worse?

[Sunking]

Your gel batteries will be destroyed in less than a year if your over sized Inverter does not burn the place down first. That is what happens when you just grab stuff and throw it together and praying you guessed correctly.

[nomadros]

Hi...I came on here a few months ago and had to bail until I got a permit for my install. Anyhoo, still waiting for the permit and the weather has turned, so I'm buying this week.
I've decided to go with the following and would appreciate any comments before I splash the cash.

I'm buying...
4no. 270w Talesun polycrystaline panels
2no. Ultracell UCG-230-12 gel batteries
1no Must 50A 24v 3000w inverter/charger
and a pile of cables and stuff.

I'll be running a small fridge, 3 or 4 LED lights, a couple of laptops, my cellphone as a router, 50W or smaller TV, cell signal booster (4G). I'll also be using a 2hp compressor about once a month IMG-20181004-WA0003.JPG
This is my "posh" shed. The panels will go below the windows. The wall is over 5m (16.5 ft) across.
It's a south facing wall. Roofs around here are pitched at about 22 degrees and I'm at 41 degrees latitude so I need more angle.
The wall should also protect them from wind (hurricane force at times) and ice and snow storms, all of which tend to come from the north or north west.

TIA