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mikegilana avatar image

Phoenix Multi back feed AC question

Hi. My daughters house is off grid. I am re-doing her power installation.


She is off-grid, there is only solar, batteries, inverter charger and the 12Kw Generator.

My concern is, that if the Phoenix completely fails, there is no way of connecting the generator directly to the house. SO I have bought a 2p2t rotary cam switch, and want to connect it as a 1-0-2 where the common tap from generator goes to :

1 takes gen power through the inverter in passthru mode like now, but
2 takes gen direct to the house.

BUT in the 2 mode, the wires will still be back connected to the AC Output terminals, so generator power will be present at the AC out terminals....is this a problem?

installationAC PV Coupling
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Murray van Graan avatar image

As to whether it will be a problem to have AC present at the inverter output when it’s been shut down I am not sure, that’s for Victron to answer. A dirty workaround would be to install a second change over switch, where you select between generator and inverter, to feed power to the house

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