[RE-wrenches] meter pan?

[Gary Willett]

In Texas, for the Oncor Energy TDSP (transmission & distribution service 
provider) interconnection agreement, an outside disconnect* is required. 
If a PV installation is submitted to Oncor for a rebate, they also 
require the inclusion of PV REC (renewable energy credit) meter, but do 
not require it to be located outdoors, or in close proximity to their 
own revenue meter. The meter must be one listed on the CEC approved list.

    /* Oncor's interconnection requirements specify a manual disconnect
    device. The disconnect must have a visual break that is appropriate
    to the voltage level, be accessible to utility personnel, and
    capable of being locked in the open position. Oncor requests that
    this visible AC disconnect be located on an exterior wall and within
    ten feet of the Oncor meter. If your visible AC disconnect is more
    than ten feet from the Oncor meter, then Oncor will request a site
    directory placard be installed on customer equipment beside the
    Oncor meter or where there is only an Oncor meter then on the Oncor
    meter base indicating the location of the visible AC disconnect./

Oncor does not require a disconnect on both sides of the PV REC meter, 
but your inspecting AHJ might.


Regards,

Gary Willett, PE


On 1/24/2012 08:52, mac Lewis wrote:
> Here in Xcel territory in Colorado, we are required to cold-sequence 
> the solar production meter.  These disconnects have to be utility 
> accessible and adjacent to the production meter itself.  I believe 
> this is only a utility requirement, not a code requirement.  This 
> seems to be unneeded redundancy, because the inverter side will shut 
> down, once the line side is deenergized.
>
> Mac Lewis
>
> On Tue, Jan 24, 2012 at 7:14 AM, Allen Frishman <amfrish at aeonsolar.com 
> <mailto:amfrish at aeonsolar.com>> wrote:
>
>     Wrencher's,
>     I am having a good debate with a fellow solar installer regarding
>     an NEC requirement to isolate a meter between two disconnecting
>     means adjacent to the meter when grid connecting via a tap.   My
>     thought is that if we have a load center with breakers to combine
>     multiple inverters on the roof, the PV meter can be located in the
>     basement between the roof load center and a fused disconnect
>     adjacent to the tap with no need for a disconnect next to the
>     meter on the load center side of the meter.  Can anyone reference
>     a section in the code that requires a disconnecting means adjacent
>     to both sides of the meter?  The meter I am referencing simply
>     records the total kWh's of the solar system as required by the
>     State incentive program.
>
>     All feedback is appreciated.
>
>     /Al Frishman/
>     AeonSolar
>
>     /(917) 699-6641 <tel:%28917%29%20699-6641> - cell/
>     /(888) 460-2867 <tel:%28888%29%20460-2867>/
>     /www.aeonsolar.com <http://www.aeonsolar.com/>/
>
>
>
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> Mac Lewis
>
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> "Yo solo sé que no sé nada." -Sócrates
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