โApr-26-2018 03:09 PM
โApr-27-2018 10:09 AM
โApr-27-2018 10:02 AM
2oldman wrote:time2roll wrote:x2. I don't really see a need to fuse any of it. So I don't.
As long as the ampacity of the wire from the panels to the controller exceeds the Isc rating of the panels... no fuse is needed.
โApr-27-2018 10:00 AM
โApr-27-2018 08:13 AM
time2roll wrote:x2. I don't really see a need to fuse any of it. So I don't.
As long as the ampacity of the wire from the panels to the controller exceeds the Isc rating of the panels... no fuse is needed.
โApr-27-2018 08:06 AM
Rail Dawg wrote:As long as the ampacity of the wire from the panels to the controller exceeds the Isc rating of the panels... no fuse is needed. You can short the wires all day long with no harm to the wire or panels. A DC rated switch might prove useful to cut power to the controller for service. Most controllers need the solar power disconnected before disconnecting from the battery. Or you can remove that fuse.
Iโll fuse at 30 amps between the solar and controller.
Thereโs also a 30-amp fuse at the battery installed by the manufacturer.
Do appreciate the input!
โApr-27-2018 07:03 AM
โApr-27-2018 05:09 AM
time2roll wrote:
Morningstar says to comply with NEC the fuse (battery to controller) s/b rated at least 20% over the controller rating and wire should have ampacity to match the fuse. So you are looking at 40 amp fuse and #8 wire minimum afaik. Fuse s/b close to the battery not the controller. If you are pushing near 30 amps I would have #6 wire minimum assuming wire fits the controller lugs.
โApr-27-2018 04:55 AM
โApr-27-2018 03:46 AM
โApr-27-2018 03:44 AM
โApr-26-2018 07:23 PM
โApr-26-2018 03:53 PM
โApr-26-2018 03:40 PM
โApr-26-2018 03:23 PM
Rail Dawg wrote:
If the controller is 30amp do you fuse the line for 30amps.