A big thanks ahead of time for your comments.
49 has a factory installed Siemens battery monitor
at the D/C distribution panel. With a 30 amp draw from battery
bank (4x200ah Deka 4D AGM
batteries that are less than one year old) the monitor
shows 11.7v whereas the batteries show 12.44v at terminals (using portable volt meter). There is a 6awg wire attached to the positive post at back of distribution panel. I assume that this voltage drop is not good. Where do I go from here?