Gary Schafer wrote in
:

The fields in the air conditioner motors suddenly collapse when power
is removed. The collapsing fields will generate a high voltage spike
throughout your boats mains system. Any other equipment that is turned
on at that time will receive those high spikes of voltage. Everything
that is turned on is connected to the air conditioner motors. You can
guess what can happen with voltage spikes fed to some types of
equipment.

If you shut down the AC systems first you avoid any kick back voltage
spikes being fed to other equipment. The fields just collapse and no
voltage spikes go anywhere.


Wow! All this time I thought Tesla's multiphase AC power system had
collapsing fields 120 times per second, not when I unplugged the shore
power cable!....

Which one of the boater electrical expert books at Waste Marine did you get
all this bull**** from, anyways, Gary?

AC systems don't work like DC systems.....(c;