Correcting V.D. with Buck Boost Transformers

[tortuga]

We are working on a project where the electrical engineer is using a Buck Boost Transformer to correct the voltage due to the distance from the electrical panel. We feel that it will not work but unable to prove or disprove that we will have the correct voltage at the receptacle.

Is this in CA? Is the EE contractually responsible for complying with 'all applicable codes' ? If so you may want to remind them of California title 24 energy code 130.5 (c) Voltage Drop. I looked into something like this in CA over a decade ago and that first appeared in 2013 so its not new.
The maximum combined voltage drop on both installed feeder and branch conductors to the farthest connected load or outlet can not exceed 5 percent of the NEC article 220 calculated load.

 

[zbang]

If not CA, other states have energy codes, too.

In the end, to me the only right options are to either massively up-size the wires or send a higher voltage over the long line - figure out which is cheaper, but on instinct I'd go for the higher voltage. I think it'll be easier, too, unless you're already pulling a lot of #4. (Call it $400 for a 2kva 3R transformer and under $100 for a 2space 3R breaker enclosure; add the rest yourself .)

Also, consider that the supposed pitching machine may not like a comparably large voltage swing (with the BB), and there's no guarantee that'll be the only thing on that circuit unless it's WELL labeled (and even then).