[RE-wrenches] Buck-Boost transformer to mitigate high voltage drop?

[Chris Schaefer]

Perhaps I missed it but you didn't say what you measured the voltage to be
at the clients service entrance panel at his house?

Christopher

On Tue, Aug 16, 2016 at 1:40 PM, Mac Lewis <maclewis1 at gmail.com> wrote:

> Yes, what current did you use to calculate that voltage drop? How big is
> the PV system?
>
> On Aug 16, 2016 11:38 AM, "Chris Mason" <cometenergysystems at gmail.com>
> wrote:
>
>> How much of the power produced will be self-consumed, how much will be
>> exported?
>>
>> On Tue, Aug 16, 2016 at 12:16 PM, Howard Arey <scot.arey at solarcentex.com>
>> wrote:
>>
>>> Good day,
>>>
>>>
>>>
>>> I have a potential client that has an existing 1,000 foot run from the
>>> meter and transformer at the street to the home. This is 4/0 Al and quick
>>> calcs show the voltage drop at over 12%. He acknowledges that the wire is
>>> undersized to keep voltage at/about 240 volts (I have not measured directly
>>> at the street / transformer yet).
>>>
>>>
>>>
>>> I know the wire has the necessary ampacity to carry his current service
>>> needs and to carry amps from the to-be-suggested solar system.
>>>
>>>
>>>
>>> My concern is that the voltage drop will change the 240 volts at the
>>> street/transformer/meter to 211ish (or will I see a higher 268’sh voltage
>>> at the far house end?) at the house. The inverter will try to synch to this
>>> voltage but of course this is outside of typical inverter parameters.
>>>
>>>
>>>
>>> So, instead of re-running much large wire, does anybody have experience
>>> and comments about potentially using a buck-boots transformer at the home
>>> to get us back to 240 volts? This would need to be service entrance sized.
>>>
>>>
>>>
>>> *Howard “Scot” Arey*
>>>
>>> Owner, Solar CenTex
>>>
>>> 254-300-1228
>>>
>>> scot.arey at solarcentex.com
>>>
>>>
>>>
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>>
>>
>> --
>> Chris Mason
>> NABCEP Certified Solar PV Installer™
>> Solar Design Engineer
>> Generac Generators Industrial technician
>>
>> www.cometsolar.com <http://www.cometenergysystems.com>
>> 264.235.5670
>> 869.662.5670
>> Skype: netconcepts
>>
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-- 

Chris Schaefer’s
<http:www.solarandwindfx.com>

*Tel/Fax 585-229-2083 or Cell 585-748-1870 *
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