Read Calder First
The firist thing I did while we were looking for our 85 H34 was to buy and then read Calder's book cover to cover. Then I studied the sections on AC and DC untill I was prety sure I understood the basics. I then used the book as my bible when I needed to understand more than the basic information.I scrapped the charger, batteries, battery wiring and 1/2/Both switch on the first day. Charger was not regulated, not counting the fact that it was wited with Romex, and extension cord and a two wire to three wire adapter.My survey recomendations included a strong suggestion that I "fix" a large chunk of the wiring problems that existed on the boat. I added the following, 1 each - Zap Stop 1 each - 150 AMP Battery Combiner West Marine 1 each - MC612H Controller 1 each - 70-90 Amp Balmor Alternator 1 each - 5/16-18 Distribution Power Post (- 12VDC) 2 each - 3/8-16 Distribution Power Post (House & Starting 12VDC) 2 each - Blue Sea 9003 On Off Switch (House & Starting) 1 each - Keyed Blue Sea 9005 On Off Switch (Parallel) 1 each - 100 AMP Circuit Breaker From the alternator 1 each - 40 AMP Circuit Breaker feeds the line going to the house panel Also replaced the feed with Duplex #8 2 each - Group 31 AGM House Batteries (210 AH Total) 1 each - Group 27 AGM Starting Battery 1 each - Battery Charger 1 each - Temperature Sensor 1 each - Remote panel for charger I did not add digital multimeters because I have a good hand held Digital Meter. I did add MIL-SPEC test jacks through the face of the battery switch panel. In case someone is not familiar with MIL-SPEC (Military Specifications) The jacks I put in are gold plated jacks with tin plated over copper connections. Attached is the schematic I prepared in Visio 2002 which I can email if someone wants a copy.I will take pictures of the new battery panel and post them this weekend.