I am also confused. I am presently installing solar on my truck camper and have been watching/reading many these solar threads and I am overwhelmed.
Here is my conclusion: Many of the threads are making this incredibly complicated for the first time ordinary user/installer. This deep theory is good for the extended education of the dedicated solar enthusiast to be able to harvest the absolute most solar energy but what I need is a common everyday Rule-of-Thumb installation guide.
1) Wire should be sized for no more than X% voltage drop based on XXX current.
2) Install fuses between X and Y components.
3) Install disconnect devices between XXX and YYY locations.
4) Fuses should be sized for XXX current of the solar panel or controller output.
5) Use series wiring between panels up to XXX voltage.
6) Use PWM controllers for XXX. Use MPPT controllers for YYY. Use either for applications between XXX and YYY.
7) Etc.
Rules-of-Thumb are available for house and business AC installations. Many times they are also code requirements. I completely support the in-depth discussions and experiments by the many solar users but they are way overwhelming for the normal uses. I would like to see a set of Rules-of-Thumb.
Thank you,
LeRoy
