At 05:09 PM 3/8/01 -0500, Weimers wrote:
<<..>>
>Maybe this relay you are talking about might create a better isolator.
>What if I put a relay between the two batteries so that they are hooked in
>parallel while the car is running (and charging). When the car is shut off
>then, the relay would open and the engine start battery would be isolated
>from the trailer line. The accessory battery WOULD be connected to the
>trailer line.
<<..>>
>I had a relay to try, but when I tried it (by leaving it on for several
>minutes) it became rather warm. I'm afraid it wasn't continuous duty. Do you
>know specifically a relay that IS continuous duty?
Personally, I like relays better than diode isolators- but both
systems have their proponents.
Tekonsha makes a continuous duty solenoid that should be available
at any RV dealer for around $13- they don't have an amperage rating, but I
would make a swag that it could handle 50 amps very comfortably.
For something heavier, Intellitec makes a relay system (several)
that senses the charging voltage, and doesn't engage the relay until the
voltage is above 13.3 volt, and one that uses a diesel starting solenoid,
but reduces the coil voltage to (IIRC) 4 volts or so, so that an
intermittent duty solenoid can be used for continuous duty.
More info at http://www.intellitecsve.com/ - select "Battery
Managment" from the drop down menu.
________
Chris Bryant
Bryant RV Services
DeLand, Florida
mailto:[EMAIL PROTECTED]
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