Post by rogers1313 on Jan 11, 2019 12:26:04 GMT -8
The Weather project I received last year came with 3 solar panels instead of two. It looks like the design is 3 now. I have some questions and will attach a drawing too. Each solar panel that I received is Model number 136X110-3. It looks like the rating specifications are: 6 volts and 330mA The wires that are soldered to each panel look they are 22 awg. Looking at a wire ampacity chart the rating for 22 awg wire is 92 mA.
So each contributing panel at absolute max output would be ok for this wire size.
Creating a junction for all the + wires and - wires from each solar panel will create a maximum amperage of 990 mA. If the panels could output this it would put the 22 gauge wires supplied at over amperage to the SunAir. I am calculating 107% overload on the junction wire to the SunAir.
Can you tell me if you take the inefficiency of the panel contributions into consideration for the sizing?
Please critique and let me understand the assumptions made when sizing the part of the system.
Post by rogers1313 on Jan 13, 2019 13:43:03 GMT -8
I was kind of wondering if the panels would ever get to their maximum current outputs because of panel efficiency. They may get there with a short circuit. I am not sure what the short circuit spec is for these panels. Is that something that you know that you can share?