Hi Wrenches
I have installed an OutBack SkyBox for a customer with 13 290 watt solar panels feeding it.
At
this point the Skybox is installed without batteries connected the main service panel in his garage, with a 100 amp breaker feeding a
house subpanel. My plan has been to put in a smaller critical-load subpanel in the house, as well as one in the garage to support the well pump.
When we went into the details and he realized all the house
loads could not be completely backed up by the 5kW Skybox, he halted to
reconsider.
I'm
thinking it might be possible to expand the battery backup
capacity with something like an OutBack VFXR3048 or perhaps a Radian
slaved to the SkyBox. This additional
inverter would be idle most of the time. The SkyBox documentation
indicates it can handle more than one SkyBox; how about another VFX
inverter?
Also, when
the SkyBox does load shaving using stored battery power to feed loads after dark, is it
feeding the critical loads panel only or all loads in the main panel?
If it is feeding all loads, how does it know how much current is for
loads and how much it is selling back to the grid, lacking CT's to
measure this?
Thanks for any insight you can offer.
DonBarch
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