Victron lynx with lithium battery, how to fuse mppt?
I've got a lynx busbar to connect a 48v lithium battery, muliplus and 2 mppts as a home ess. The battery has a 200a bms and would probably have about a 4kA short circuit current. And I thought I could fuse all of it with the lynx system. Use a adler ef3 fuse for the battery, because of the high short circuit current. And mega fuses for the rest.
Now I think I made a mistake there. Since mega fuses are on the same busbar as the battery they would also see the full short circuit current incase of a short behind them. A short circuit current they aren't rated for. So I figured I'd make them all ef3 fuses. However ef3 fuses don't go lower than 150A, a current the 16 mm2 wires of the mppt's aren't rated for.
So it seems like you can't use the mppt's in combination with the lynx and a big lithium battery. But I feel like it's a setup you see quite often. So am I missing something? How have others approached this problem? Or is it just something the lynx system can't be used for and should I go to a different fuse holder?