342 Refrigerator Wiring
First of all, great to see this forum has come alive!
I think I have a problem with a voltage drop at the DC panel in the galley. My Waeco fridges, which apparently are really sensitive to dips in voltage, go into an infinite on/off loop as soon as the batteries are not charging from shore or alternator power.
I have two brand new deep cycle house batteries monitored by a battery health monitor which tells me the voltage measured directly at the batteries never drops below 11.8V even at 70% discharge. However the voltmeter on the DC panel shows a much lower voltage, below 11. I always put that down to an unreliable instrument but now that the fridges are acting up I am starting to think maybe that reading is correct. I am going to drop the DC panel and make some proper readings, but I need to find out how this is wired in case I have to pull new wires.
If I understand it correctly the DC panel is supplied by a wire from the main power panel in the recess on the aft bulkhead. How is that wire, and its corresponding ground wire, routed to the galley?
I also assume the cockpit fridge is powered from the DC panel. Because both fridges exhibit the same problem the voltage drop would have to occur before both refrigerator feeds (unless both fridges are broken - unlikely?).
How difficult is it to work on the wiring to/from the DC panel? I have pulled wires/cables from the engine bay through the starboard side to the helm and that was not too bad but unfortunately that allowed me to see the quality of Rinker's electrical installation - shudder