I have a Xantrex Freedom 2000 inverter/charger installed on Liberty - actually, its with the local repair technician, and that's the issue. It was installed new about 6 years ago.
Connected to shore power
a few days ago, I plugged in a 10 amp power saw to the house AC, and used it just fine for the first cut. Second cut, pulled the trigger and the house AC power shut down and the reverse polarity light came on. My brother has a marine electrical
business, so I called him, and in troubleshooting he figured out that the AC power coming from the dock
, thru the Shore/Off/Gen switch, and then to the Xantrex unit was good, but the power coming out of the Xantrex was bad.
Called Xantrex, took unit to local tech, and diagnosis was burned out AC transfer switch (or something like that), caused by high amp load. It was noted that AC from the dock
goes thru a relatively new 30 amp breaker, and this did not trip on the momentary inrush current
when the saw kicked on, but this inrush current
was apparently enough to fry the Xantrex AC transfer switch.
We discussed whether this is some sort of design flaw, and decided that the only way to be safe is to install an outlet upstream of the Xantrex unit for possible high amp draws (such as power tools). When this was discussed with Xantrex they basically said "go pound sand", and reminded that they caution against using high amperage devices.
I guess I'll be rewiring another part of the boat, and paying $435 to Xantrex to repair a unit that somehow failed even when the circuit breaker did not trip.