Ditto Larry's link:
1 turns meter when PV power sold.
2 turns meter when Battery Power sold.
3 cancels turns when: pulling power to charge battery and using that
battery power for critical loads. (power used from grid is still accounted
for on the utility meter)
side note: for 120V output
you need
no, he said he only wanted to meter what was being sold to the grid... not what
was sold to the grid plus local consumption (which is the only way to measure
total PV production).
btw austin international (they have a new name now) has cheaper meters.,
todd
On Tuesday, December 6, 2011
David,
Here is a link to what you might be looking for:
http://www.outbackpower.com/pdf/tech_notes/120_vac_single_inverter.pdf
Larry Liesner
Wirewiz
31 Lincoln St
Westport, CT 06880
203-644-2404
wire...@gmail.com
www.wire-wiz.com
NABCEP Certified PV Installer (# 032611-184)
On Tue, Dec 6, 2011
Dave,
Which utility is it? WEC?
Are you doing an AC coupled or DC coupled system? If AC I believe you could use
a normal 240v meter between the critical load panel and the grid inverter which
would only measure the solar production.
Howie Michaelson
Dave Palumbo wrote:
>We are installing a g
treat this as you would treat metering a standard non battery system. the KV2
meters are for combining the local consumption with the selling to the grid. a
standard, single direction counting kWh meter in series with the 240 v grid tie
will do what you want.
todd
On Tuesday, December 6
We are installing a grid interactive, with battery back-up, OutBack Radian
GS8048 with 5kW of PV. Vermont has a "Solar Adder" premium that varies from
utility to utility but in this case adds 6 cents per kWh over and above
net-metering (basically to come up to a par value of 20 cents/kWh for PV
pro
Allen,
As far as best practices go, I would route all those conductors and GEC/ECG
in the same raceway." To maintain the shortest electrical time constant in
each circuit, the ECG should be routed as closely as possible to the
circuit conductors. This routing facilitates the operation on over-cur
I'd avoid using the metal conduit as the only bond in your equipment grounding
from the roof down to other equipment. If the GEC is bonded to the rest of the
equipment grounding system at a point on the ground, then of course it can
double as the EGC. Otherwise, if you don't want to use a separa
I would run a wire, I have seen metallic conduit used as ground come apart
in buildings. At that point we know where the ground (or at least the
connection goes..)
I doubt that it makes a difference whether it is single or 3 phase.
But there are lots of people on the list with more 3 phase experi
Fellow Wrenchers,
I know this topic has come up before and I have a understanding but I am
looking for best practices advice.
When installing a 50KW or larger 3 phase 208V (WYE Service) Inverter on a roof
do you run your Grounding Electrode Conductor in a separate conduit from the 3
hots, and t
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