10 = Solar panels. May be more than 1 in series, but VOC of the strings needs to be watched so you do not exceed the voltage limits of the charge controller. 11 = MidNite Combiner box. This takes the strings of solar panels and combines them into a single string to the Charge controller. Make sure to pick the proper voltage and amperage breakers for this box. 12 = MNSPD300-DC DC Surge Protection Device 300vdc max. 13 = MNSPD300-AC AC Surge Protection Device.
