Gathering parts to refine my solar
I have a new combiner box to gather up my three 150w panels. Prolly going parallel to start with. In my current set up of two 150w panels in parallel there is no fusing before the controller or betw...
Forum Discussion
You should fuse the wire from controller to battery. No need to fuse between panels and combiner or from combiner to controller with the three 150s in parallel. (It can be different with them in series, "depending") This guide has it all--worth a study.
http://www.cooperindustries.com/content/dam/public/bussmann/Electrical/Resources/technical-literature/bus-ele-an-10191-pv-app-guide.pdf
However some controllers like Morningstar don't like it when they are connected to the array but not to a battery. So to make sure that does not happen, you install a switch (that you can get at--so near the controller, not on the roof) between combiner and controller.
When swapping out your battery you use the switch first and last After re-installing the battery you let the controller see what voltage the battery is at--as required for a "12/24" controller, then re-connect to the array.
http://www.cooperindustries.com/content/dam/public/bussmann/Electrical/Resources/technical-literature/bus-ele-an-10191-pv-app-guide.pdf
However some controllers like Morningstar don't like it when they are connected to the array but not to a battery. So to make sure that does not happen, you install a switch (that you can get at--so near the controller, not on the roof) between combiner and controller.
When swapping out your battery you use the switch first and last After re-installing the battery you let the controller see what voltage the battery is at--as required for a "12/24" controller, then re-connect to the array.
