[RE-wrenches] 705.95(B) and Sunny Boys - current on Neutral?

[Jeff Clearwater]

Hey Folks,

So does anyone have a reference I can show my AJH as to whether there is 
any current on the neutral of a single phase 240 VAC SB 7.7-40 inverter?

705.95(B) states:

Neutral Conductor for Instrumentation, Voltage
Detection or Phase Detection. A conductor used solely for
instrumentation, voltage detection, or phase detection and
connected to a single-phase or 3-phase utility-interactive
inverter, shall be permitted to be sized at less than the
ampacity of the other current-carrying conductors and shall
be sized equal to or larger than the equipment grounding
conductor.

Be great not have to run 3/0 wire to my dedicated PV subpanel with 5 
SB7.7s.  At 200 Amps I could use 6 AWG according to 705.95.  A huge 
savings in wire pull hassle not to mention copper.

Are there any other practical considerations for those SBs to operate 
well if I were to go that low with the neutral?

Anybody have any field experience with AJHs on this?

Thanks,

Jeff

~~~~~~~~~~~
Jeff Clearwater
Village Power Design
linkedin <https://www.linkedin.com/in/jeff-clearwater-0622a312/>
www.villagepowerdesign.com <http://www.villagepowerdesign.com>
cell - 413-559-9763
~~~~~~~~~~~~~~~~~~~~~~~
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