SailNet Community - View Single Post - Huge Voltage Drain Problem - Ideas?
View Single Post
  #10  
Old 11-03-2013
fryewe's Avatar
fryewe fryewe is offline
Senior Member
 
Join Date: Dec 2004
Location: Gulf Coast.
Posts: 1,129
Thanks: 22
Thanked 43 Times in 43 Posts
Rep Power: 10
fryewe is on a distinguished road
Re: Huge Voltage Drain Problem - Ideas?

You can check the specific gravity of each cell if you have a hydrometer small enough to use the limited electrolyte volume of your Trojan batteries. The sp. gr. of each cell should be within about 5 points of the average (.05).

Wire gauge as small as 16 can carry 40A without damage. Wire insulation damage may not be evident.

You should be looking for a place that a very low resistance to ground has developed…40A at 12V is 0.375 ohms equivalent resistance. You isolated loads and still had the current flowing and that indicates a near-short circuit to ground somewhere.

The best way to isolate something of this nature is to split your distribution system with switches or breakers or fuses while monitoring your instruments until the condition clears…then split the offending half again…and again…until you find the culprit. Near the end you may have to lift leads to isolate the fault.

Good luck.
__________________
“Sailors, with their built in sense of order, service and discipline, should really be running the world.” – Nicholas Monsarrat
Reply With Quote Share with Facebook
The Following User Says Thank You to fryewe For This Useful Post:
JohnZion (11-03-2013)