My recommendation was based on eliminating the battery switch from your battery charging
circuit. You could
connect the conductors to the battery switch #1 and #2 battery studs BUT, when you start loading up the studs with ring terminals the switch begins to get hard to service
, troubleshoot, etc.
The ABYC Standard requires over current
protection devices (OCPD) at both ends of a conductor that are connected to sources; i.e., the battery bank at one end and the charging
source at the other end. The requirement for an OCPD at the charging source is eliminated IF
the charging source is self limiting. In other words, if the capacity of the charging source is less than the ampacity of the conductor.
Bill-Maxi fuses have an ampere interrupt capacity (AIC) of 1,000 amps which is adequate for a branch circuit connected to a battery of < 650 CCA. The AIC required for a main feed from a 650 CCA battery is 1500 amps and a Maxi is not
suitable for this application. ANLs have an AIC of 6,000 amps and are suitable for banks with a CCA of 1100 amps or more. The MRBF's I cited previously are even more robust with an AIC of 10,000 amps. They also have a very small form factor and can be mounted on the battery terminal or a terminal block. Very sweet!!
This whole subject of OCPDs and AICs is going to be opened for discussion in the near future because of the emergence of lithium iron phosphate (LFP) batteries and their very high energy density. Matching the OCPD's AIC to the CCA of the battery is going to have to be improved on but it is all that we have for now.
Hope this helps.