[VAC] Charge line isolation question

[Tuna <rctowns@xxxxxxxxxx>]

I seem to recall a thread about isolating the tow-vehicle's charge line to
the trailer battery, but the tompatterson server seems to be unavailable at
the moment for searching... so i thought i'd just put it out there:

Is there a potential problem with having the tow-vehicle's charge line
connected when the trailer's converter/inverter
('univolt'/statpower/intellipower/magnatek) is in operation? I'm wondering
if having the 'univolt' connected to shore-power when the tow-vehicle's
charge line is active, and the vehicle's engine starts, if a 12-volt surge
from the tow-vehicle's alternator could overload the trailer's voltage
converter and damage it?

I think someone mentioned putting a big honkin' diode somewhere on the
charge line, but that seems like it would defeat the purpose of the charge
line... is it a good idea to simply disconnect the shore power before
starting the tow-vehicle's engine?

Tuna