Battery Shut Off - 25RDS and Solarflex

[flybouy]

Originally Posted by RacerX

Plus 1 on this. After reading this thread I went out to double check on the wiring done when the dealer added the two batteries. They were wired in slave master parallel like the OP. Easy fix, but I also noted that the interconnecting cables were a much lower gauge (prob 4 AWG) for the 2 foot between batteries. I am assuming that even with the 2000 watt inverter minimal use I am prob ok with that length and gauge between batteries but interested if I am off base.
Now that current will flow Thru both batteries should i be adding higher gauge between the two? ( both sill Interstate lead acid)

The interconnecting wire should be the same gauge or lower (so same size or heavier) than the other 2 connecting cables. While it may be OK for the "normal" load, it still has the potential to become a fusible link (heating to the point of melting the insulation).