I'm looking to install a DC 6-8Kw solar panel system without micro-inverter that can get me a 400-450VDC drop into the garage for battery backup using a Ecoflow Ultra. I heard that a lot of the solar installer won't work on anything less than a complete system. If that is the case. Is there any permit requirement and is it possible to hire a contractor/electrician to set that up? Thanks in advance for any advise.
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