[RE-wrenches] Metering a whole house Outback system

[Hilton Dier III]

Hello Wrenches,

Here's a metering conundrum for you.

I have a client with a dual stacked Outback 3648 inverter panel and a PV 
array. He has been off-grid for years, but he is now going on-grid. He 
is getting the Outbacks rebuilt at the factory to be grid tie compatible.

As per our local requirements, he needs a meter to read just the output 
of the inverter. The problem is that he has the whole house on the 
inverters, not just a vital loads panel. He wants to keep it that way. 
That gives him two separate outputs, "AC Out" to the main breaker panel 
and "AC In(teractive)" to the grid connection. If he just puts a meter 
on the AC In line, he will lose track of the inverter output that goes 
to power the house, and he'll get his output reduced by any grid-based 
charging he does.

There is a "green tag" method of wiring the meter to avoid this, but it 
is designed for two single-leg 120VAC outputs and the stacked Outbacks 
are putting out 240VAC on two legs.

Aside from dropping $600 on an e-Gauge, is there any way to get around this?

Many thanks,

Hilton

-- 
Hilton Dier III
Renewable Energy Design
Partner, Solar Gain LLC
453 East Hill Rd.
Middlesex, VT 05602

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