jameshowison
New Member
- Joined
- Jul 30, 2021
- Messages
- 184
I am replacing the system in an RV with a 48v system. I have a Victron 48/12 30amp Orion DC-DC converter. Plan is that 48v Input comes from the busbar, runs through a Midnite DC circuit breaker and into the Orion, 12v leaves and feeds the existing RV 12 volt system.
Victron materials say that the 12/24v units have "Input fuse. On 12V and 24V input models only." And the little manual that comes with it says, "the 12v and 24v input models have an internal fuse (not replaceable). The 48v models do not have this fuse: external fuse required".
I *think* that is talking about fusing the input side, although I'm confused about why one would have a fuse at the end of the wire from the battery (with the internal fuses).
I'm also wondering if I should be fusing the output side, treating it as though it was a 12v battery. If so should I be fusing for the max output (40A) or the short-circuit current (60A). Details on the bottom of the second page, third last column (360W).
The wire run from the Orion to the 12V distribution board will likely be short, like a few feet, but since I haven't located each item yet, it may be up to 15ft (round trip).
Victron materials say that the 12/24v units have "Input fuse. On 12V and 24V input models only." And the little manual that comes with it says, "the 12v and 24v input models have an internal fuse (not replaceable). The 48v models do not have this fuse: external fuse required".
I *think* that is talking about fusing the input side, although I'm confused about why one would have a fuse at the end of the wire from the battery (with the internal fuses).
I'm also wondering if I should be fusing the output side, treating it as though it was a 12v battery. If so should I be fusing for the max output (40A) or the short-circuit current (60A). Details on the bottom of the second page, third last column (360W).
The wire run from the Orion to the 12V distribution board will likely be short, like a few feet, but since I haven't located each item yet, it may be up to 15ft (round trip).