12 Volt Distribution Issue

Nov 9, 2014
1
Hunter 49AC Kenai
First off my electrical knowledge is not very extensive but I do have a good principle understanding of it. My problem is in my house 12 volt distribution from the battery bank to the Hunter electrical distribution panel to the 12v appliances. I have 4 8D Gel batteries controlled with a Xantrex Link 1000.
When my house batteries meter 13.5v my Link 1000 says 13.6v but my Hunter electrical panel reads 12.23v. So as the batteries draw down and meter say 12.25v at the battery terminal and about 12.35v on the Link 1000 the Hunter panel will read 10.88v
And this lower voltage from the Hunter panel is exactly what I meter for things like my freezer that has a low voltage shut down. This is how I had discovered the issue. I had always noticed the difference in the meter readings between the Link 1000 and the Hunter panel but did not give it much thought as I assumed the panel was somehow misreading the voltage, now I am aware that my batteries have sufficient voltage but my 12v appliances are not getting the proper voltage from the Hunter House Distribution Panel.
Any helpful info would be greatly appreciated.

Evertt
SV Seacilia
 
Feb 6, 1998
11,759
Canadian Sailcraft 36T Casco Bay, ME
You have a voltage drop issue. Also all volt meters should always be direct connected to the physical battery bank (both positive and negative) NOT reading voltage off the DC panel, as MOST builders do in a cost cutting measure....

Confirm your readings with a DVM. If the volt meter from the factory is even somewhat accurate, for where it is physically connected to, then you have some wiring issues to contend with.. be sure to take your DVM readings where the voltat meter connects to, physically and then compare that to the physical battery terminals. It is also possible your older Link has gone goofy, would not be the first one...
 
Jan 22, 2008
8,050
Beneteau 323 Annapolis MD
Use the same portable volt meter to read at all test points.
 
Feb 26, 2004
23,348
Catalina 34 224 Maple Bay, BC, Canada
99 44/100% of electrical issues are related to poor connections. The other 56/100% is voltage drop.

Most of us weren't born as electricians. Find this book, available online, and read away:

Boatowners Illustrated Electrical Handbook by Charlie WING