Wayne.B wrote in
:

If it has diode rectifiers that convert AC to DC, it can be damaged by
switching batteries.


How do you think that would happen? The stator windings limit current and
the rectifier is rated much higher than they can produce. There's no
reverse voltage over 14V so that's not a threat to a rectifier, either.....

What IS threatened is the ELECTRONICS hooked to the battery switch if the
electronics is hooked to the alternator side of the switch. In moving the
switch, if the battery circuit opens, the stator/rectifier puts out its
open circuit voltage (engine running of course) and that voltage is much
higher than the 14V of the batteries, possibly getting high enough to
destroy the bloat-priced electronics hooked to it. Of course, if your
electronics is directly connected to the house batteries, that's not a
problem, but this would be unusual.

The charging alternator isn't threatened at all....unless the battery
switch has a short to ground, which might take out the rectifier. Battery
switches don't have grounds in them.

--
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