[RE-wrenches] Old Modules for GIT system?

[Ray Walters]

Depending on the original work, I'd look at sealed batteries and leave 
it alone.  I've done a bunch of rewires, and you're really wasting the 
customer's money to rewire 80 watt modules. ( module J boxes are so 
1990s....) Meanwhile those 80 watt modules have decent resell value for 
small 12 v systems, as does the Trace inverter.
I found that Outbacks take about 480 w-hr/ day so that's  a fair bit of 
the array just to offset that.
Small sealed battery bank, and let him play with a few backup circuits 
in off grid mode might be OK. or offer him a new GT system with a nice 
trade in allowance for the old gear.
I did a rewire recently like this, and we reused the generator 3 way 
circuit selector.  That lets them pick which circuits are on or off the 
grid.  I'm sure others here will have some good ideas I haven't thought 
of too.

R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760

On 6/4/2013 3:53 PM, Steven Lawrence wrote:
> Dana,
> Maybe wire 3 in series to a single Enphase?  It'll depend on what the 
> voltages are.
>
>     Date: Tue, 4 Jun 2013 14:01:42 -0600
>     From: "Dana" <dana at solarwork.com <mailto:dana at solarwork.com>>
>     To: "'RE-wrenches'" <re-wrenches at lists.re-wrenches.org
>     <mailto:re-wrenches at lists.re-wrenches.org>>
>     Subject: [RE-wrenches] Old Modules for GIT system?
>     Message-ID: <05f401ce615e$55773960$0065ac20$@com>
>     Content-Type: text/plain; charset="us-ascii"
>
>     I have a client eat has a 24 - Solarex  SX 80 PV module system
>     that was off
>     grid, Trace inverter, APT Power panel and an very aged L-16
>     battery bank.
>
>     The utility came in and he wants to go grid tie. It is or was only
>     960 watt
>     originally. I realize that an array rewire is in order and it may
>     only be a
>     1 KW system but he is interested in getting the equipment upgraded.
>
>     Has anyone done a grid tie with such a small array and with
>     modules this
>     old?
>
>     Any thoughts on installing sealed batteries and leaving it alone?
>
>
>
>
>
>
>
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