vdub
New Member
- Joined
- May 31, 2021
- Messages
- 30
I have a question concerning fuses; both how many amps and placement. This diagram is my system. I have 58 foot run from the panels, through the forest, to the solar controller. I really want to get this right as I don't want to burn down my cabin or the forest.
I'm enclosing the 58' run inside pvc pipe and burying it about 14" deep. That should keep the squirrels from molesting the wire and shorting it out. I'm thinking a single 20A fuse at point E on the diagram is all I need. But maybe a couple 15A fuses at points C and D, too? Or should I move the 20A fuse closer to the MPPT at point F? Or, should I have a 20A fuse at both points E and F?
I've enclosed an image of the specs for the panels, as well as the MPPT specs. These panels are the used $50 unbranded panels that Will found and recommended. They are all working perfectly near as I can tell, of course, I'm only measuring voltage at this point. Even in overcast weather, I'm getting 30V on each panel.
In addition to my question on the fuse, what kind of kill switch do I need? I can't believe I have to spend $67 on Amazon for a stupid switch, however, it will have 60V passing through it. Isn't there something cheaper?
If someone (or maybe a couple people smarter than me) could check this diagram against the various labels and capabilities and tell me if it makes sense, I'd really appreciate it. Please, in particular, check the MPPT label against what I will have going into it. I think I am understanding the input correctly and not exceeding the limits, but not absolutely positive.
Really appreciate any help I can get before connecting things up. Thanks!
I'm enclosing the 58' run inside pvc pipe and burying it about 14" deep. That should keep the squirrels from molesting the wire and shorting it out. I'm thinking a single 20A fuse at point E on the diagram is all I need. But maybe a couple 15A fuses at points C and D, too? Or should I move the 20A fuse closer to the MPPT at point F? Or, should I have a 20A fuse at both points E and F?
I've enclosed an image of the specs for the panels, as well as the MPPT specs. These panels are the used $50 unbranded panels that Will found and recommended. They are all working perfectly near as I can tell, of course, I'm only measuring voltage at this point. Even in overcast weather, I'm getting 30V on each panel.
In addition to my question on the fuse, what kind of kill switch do I need? I can't believe I have to spend $67 on Amazon for a stupid switch, however, it will have 60V passing through it. Isn't there something cheaper?
If someone (or maybe a couple people smarter than me) could check this diagram against the various labels and capabilities and tell me if it makes sense, I'd really appreciate it. Please, in particular, check the MPPT label against what I will have going into it. I think I am understanding the input correctly and not exceeding the limits, but not absolutely positive.
Really appreciate any help I can get before connecting things up. Thanks!