Now what the last couple of weeks have shown me is that my math isn't supporting reality. According to the math I should be able to operate for two days on batteries with no charge coming and at that point the batteries should be at about 60%. Well reality is I can operate one day before I hit the 60% mark. The good news is that it's been consistent everyday so I feel confident in my system design changes.
Now the system as it stands consists of the following components:
- 2 Talesun 250W 24V monocrystaline panels
- 1 Renesola 260W 24V monocrystaline panel
- 3 Helios 7T2 300W 24V monocrystaline panels (severely damaged)
- 1 Trace Xantrex C40 PWM charge controller
- 1 Blue Sky Solar Boost 3024iL MPPT charge controller
- 1 Tripp-Lite 24V 2400W PowerVerter inverter
- 8 US L16XC 6V 380Ah deep cycle batteries
- 1 Custom built combiner box
- 3 15A DC rated circuit breakers
- 3 15A DC rated quick burn fuses
- 2 8 connection DIN rails
- 3: 4 position DC rated switches (Off, 1, 2, Both)
- 1 two position DC rated switch
As I stated in the beginning of this post, we are getting two more of the 260W Renesola panels, so that will bring me up to a total of 1.28kW potential power generation plus whatever the three Helios panels are producing. I haven't really taken the time to figure out what they are actually generating in terms of power yet. Eventually we will be getting a wind turbine as well, but for the interim we will have to rely strictly on solar.
Okay so now for some gratuitous images! Yes... I am sure things could be cleaner, nicer and so forth. If you have the $$$ and spare time you are more than welcome to come on over and lend a hand! But this is how it is in the real world where people don't have lot of disposable income. It works, it isn't pretty but it works.
Here is my combiner box where you can see both the breakers and fuses. |
A close up of each breaker I have them labeled for each panel in case I need to remove a specific panel I can just isolate the one panel and leave the system operational. |
And a full view of the inside of the box. |
Here are the two charge controllers I have in use at the moment. |
The two panels you can see pretty clearly are the Talesun 250W, this photo was taken just prior to the Renesola panel being installed. The Helios panels are just below the Talesun panels. |