[RE-wrenches] PV wire/double insulated

[Marco Mangelsdorf]

I'm starting to use the SMA SB transformerless 8-10 kW inverters.

 

It appears that the new SMA 6-circuit combiner box is being included
whenever I order one of these buggers (at least from my distributor).

 

Does the double insulated PV wire have to be used all the way back to the
inverter?  Or can I get by with just using it to the combiner and then
transition to the usual TWHN-2 wire?

 

Thanks,

marco

 

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