Home |
Search |
Today's Posts |
#4
![]()
posted to rec.boats.cruising
|
|||
|
|||
![]()
* Larry wrote, On 8/10/2007 5:36 PM:
This telling little paragraph is why we still have an electrical problem on the Pig. As soon as we start the engine, we crank it all up BEFORE the heavy battery charge current and 13V turns into light charge current and the alternator's voltage regulator starts throttling back rotor current to limit the voltage to 14.2V..... Is it any wonder that you're eating V-belts keeping the poor alternator at its limit BEFORE the battery charging is complete?! I love you two to death, but we have GOT to stop using our recharging current to run all that crap! NO UNNECESSARY LOADS UNTIL THE BATTERY VOLTAGE RISES TO REGULATOR VOLTAGE! RECHARGE THE BATTERIES FIRST!! I believe this is total nonsense. I have one major load, a fridge/freezer that draws about 30 Amps and runs about an hour to three hours a day (depending on air and water temps, etc.). I make a point of running the engine or generator at the same time as the fridge, thus saving about 15 to 20% of the power - the efficiency loss of running the juice through the batteries. In addition to the simple Charge Efficiency Factor, there is also the issue of running the fridge at 13+ Volts, as opposed to 12 (or even less) Volts. There is no indication that the alternator runs harder doing this, in fact its running about 20% less. Oddly, you're always claiming that charging a 450 Ah bank at 80 or 90 Amps is doing great damage. What I'm doing is reduces that to 50 Amps charging, with 30 Amps to the fridge. Are you claiming that the fridge, radar, and autopilot must be turned off if the engine is running and the batteries are not fully charged? |
Thread Tools | Search this Thread |
Display Modes | |
|
|
![]() |
||||
Thread | Forum | |||
Why Neal Can't Land a Job. | ASA | |||
This Land Is My Land | ASA | |||
FS: Windtek Land Yacht 3 wheel land sailer - Sail anywhere! | ASA |