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

[Glenn Burt]

Maybe a 208v inverter will fit the bill?

-----Original Message-----
From: "Howard Arey" <scot.arey at solarcentex.com>
Sent: ‎8/‎16/‎2016 12:16
To: "'RE-wrenches'" <re-wrenches at lists.re-wrenches.org>
Subject: [RE-wrenches] Buck-Boost transformer to mitigate high voltage drop?

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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